scala.collection.mutable

LinkedHashMap

class LinkedHashMap[A, B] extends AbstractMap[A, B] with Map[A, B] with MapLike[A, B, LinkedHashMap[A, B]] with HashTable[A, LinkedEntry[A, B]] with Serializable

This class implements mutable maps using a hashtable. The iterator and all traversal methods of this class visit elements in the order they were inserted.

A

the type of the keys contained in this hash map.

B

the type of the values assigned to keys in this hash map.

Annotations
@SerialVersionUID( uid = 1L )
Source
LinkedHashMap.scala
Linear Supertypes
Serializable, Serializable, HashTable[A, LinkedEntry[A, B]], HashUtils[A], AbstractMap[A, B], Map[A, B], MapLike[A, B, LinkedHashMap[A, B]], Cloneable[LinkedHashMap[A, B]], Shrinkable[A], Builder[(A, B), LinkedHashMap[A, B]], Growable[(A, B)], Clearable, Iterable[(A, B)], Traversable[(A, B)], Mutable, AbstractMap[A, B], Map[A, B], MapLike[A, B, LinkedHashMap[A, B]], Subtractable[A, LinkedHashMap[A, B]], PartialFunction[A, B], (A) ⇒ B, GenMap[A, B], GenMapLike[A, B, LinkedHashMap[A, B]], AbstractIterable[(A, B)], Iterable[(A, B)], IterableLike[(A, B), LinkedHashMap[A, B]], Equals, GenIterable[(A, B)], GenIterableLike[(A, B), LinkedHashMap[A, B]], AbstractTraversable[(A, B)], Traversable[(A, B)], GenTraversable[(A, B)], GenericTraversableTemplate[(A, B), Iterable], TraversableLike[(A, B), LinkedHashMap[A, B]], GenTraversableLike[(A, B), LinkedHashMap[A, B]], Parallelizable[(A, B), ParMap[A, B]], TraversableOnce[(A, B)], GenTraversableOnce[(A, B)], FilterMonadic[(A, B), LinkedHashMap[A, B]], HasNewBuilder[(A, B), LinkedHashMap[A, B]], AnyRef, Any
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Inherited
  1. LinkedHashMap
  2. Serializable
  3. Serializable
  4. HashTable
  5. HashUtils
  6. AbstractMap
  7. Map
  8. MapLike
  9. Cloneable
  10. Shrinkable
  11. Builder
  12. Growable
  13. Clearable
  14. Iterable
  15. Traversable
  16. Mutable
  17. AbstractMap
  18. Map
  19. MapLike
  20. Subtractable
  21. PartialFunction
  22. Function1
  23. GenMap
  24. GenMapLike
  25. AbstractIterable
  26. Iterable
  27. IterableLike
  28. Equals
  29. GenIterable
  30. GenIterableLike
  31. AbstractTraversable
  32. Traversable
  33. GenTraversable
  34. GenericTraversableTemplate
  35. TraversableLike
  36. GenTraversableLike
  37. Parallelizable
  38. TraversableOnce
  39. GenTraversableOnce
  40. FilterMonadic
  41. HasNewBuilder
  42. AnyRef
  43. Any
Implicitly
  1. by traversable2ops
  2. by MonadOps
  3. by any2stringadd
  4. by any2stringfmt
  5. by any2ArrowAssoc
  6. by any2Ensuring
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Visibility
  1. Public
  2. All

Instance Constructors

  1. new LinkedHashMap()

Type Members

  1. class DefaultKeySet extends AbstractSet[A] with Set[A] with Serializable

    The implementation class of the set returned by keySet.

  2. class DefaultValuesIterable extends AbstractIterable[B] with Iterable[B] with Serializable

    The implementation class of the iterable returned by values.

  3. type Entry = LinkedEntry[A, B]

  4. type Self = LinkedHashMap[A, B]

    The type implementing this traversable

    The type implementing this traversable

    Attributes
    protected
    Definition Classes
    TraversableLike
  5. class WithFilter extends FilterMonadic[A, Repr]

    A class supporting filtered operations.

Value Members

  1. final def !=(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef
  2. final def !=(arg0: Any): Boolean

    Test two objects for inequality.

    Test two objects for inequality.

    returns

    true if !(this == that), false otherwise.

    Definition Classes
    Any
  3. final def ##(): Int

    Equivalent to x.hashCode except for boxed numeric types and null.

    Equivalent to x.hashCode except for boxed numeric types and null. For numerics, it returns a hash value which is consistent with value equality: if two value type instances compare as true, then ## will produce the same hash value for each of them. For null returns a hashcode where null.hashCode throws a NullPointerException.

    returns

    a hash value consistent with ==

    Definition Classes
    AnyRef → Any
  4. def +[B1 >: B](elem1: (A, B1), elem2: (A, B1), elems: (A, B1)*): Map[A, B1]

    Creates a new map containing two or more key/value mappings and all the key/value mappings of this map.

    Creates a new map containing two or more key/value mappings and all the key/value mappings of this map.

    Specified mappings will override existing mappings from this map with the same keys.

    B1

    the type of the added values

    elem1

    the first element to add.

    elem2

    the second element to add.

    elems

    the remaining elements to add.

    returns

    a new map containing mappings of this map and two or more specified mappings.

    Definition Classes
    MapLikeMapLike
    Annotations
    @migration
    Migration

    (Changed in version 2.8.0) + creates a new map. Use += to add an element to this map and return that map itself.

  5. def +[B1 >: B](kv: (A, B1)): Map[A, B1]

    Creates a new map containing a new key/value mapping and all the key/value mappings of this map.

    Creates a new map containing a new key/value mapping and all the key/value mappings of this map.

    Mapping kv will override existing mappings from this map with the same key.

    B1

    the type of the value in the key/value pair.

    kv

    the key/value mapping to be added

    returns

    a new map containing mappings of this map and the mapping kv.

    Definition Classes
    MapLikeMapLikeGenMapLike
    Annotations
    @migration
    Migration

    (Changed in version 2.8.0) + creates a new map. Use += to add an element to this map and return that map itself.

  6. def +(other: String): String

    Implicit information
    This member is added by an implicit conversion from LinkedHashMap[A, B] to StringAdd performed by method any2stringadd in scala.Predef.
    Definition Classes
    StringAdd
  7. def ++[B1 >: B](xs: GenTraversableOnce[(A, B1)]): Map[A, B1]

    Creates a new map containing the key/value mappings provided by the specified traversable object and all the key/value mappings of this map.

    Creates a new map containing the key/value mappings provided by the specified traversable object and all the key/value mappings of this map.

    Note that existing mappings from this map with the same key as those in xs will be overriden.

    B1

    the type of the added values

    xs

    the traversable object.

    returns

    a new map containing mappings of this map and those provided by xs.

    Definition Classes
    MapLikeMapLike
    Annotations
    @migration
    Migration

    (Changed in version 2.8.0) ++ creates a new map. Use ++= to add an element to this map and return that map itself.

  8. def ++[B](that: GenTraversableOnce[B]): `LinkedHashMap`[B]

    [use case] Returns a new linked hash map containing the elements from the left hand operand followed by the elements from the right hand operand.

    [use case]

    Returns a new linked hash map containing the elements from the left hand operand followed by the elements from the right hand operand. The element type of the linked hash map is the most specific superclass encompassing the element types of the two operands.

    Example:

    scala> val a = LinkedList(1)
    a: scala.collection.mutable.LinkedList[Int] = LinkedList(1)
    
    scala> val b = LinkedList(2)
    b: scala.collection.mutable.LinkedList[Int] = LinkedList(2)
    
    scala> val c = a ++ b
    c: scala.collection.mutable.LinkedList[Int] = LinkedList(1, 2)
    
    scala> val d = LinkedList('a')
    d: scala.collection.mutable.LinkedList[Char] = LinkedList(a)
    
    scala> val e = c ++ d
    e: scala.collection.mutable.LinkedList[AnyVal] = LinkedList(1, 2, a)
    B

    the element type of the returned collection.

    that

    the traversable to append.

    returns

    a new linked hash map which contains all elements of this linked hash map followed by all elements of that.

    Definition Classes
    TraversableLikeGenTraversableLike
    Full Signature

    def ++[B >: (A, B), That](that: GenTraversableOnce[B])(implicit bf: CanBuildFrom[LinkedHashMap[A, B], B, That]): That

  9. def ++:[B >: (A, B), That](that: Traversable[B])(implicit bf: CanBuildFrom[LinkedHashMap[A, B], B, That]): That

    As with ++, returns a new collection containing the elements from the left operand followed by the elements from the right operand.

    As with ++, returns a new collection containing the elements from the left operand followed by the elements from the right operand.

    It differs from ++ in that the right operand determines the type of the resulting collection rather than the left one. Mnemonic: the COLon is on the side of the new COLlection type.

    Example:

    scala> val x = List(1)
    x: List[Int] = List(1)
    
    scala> val y = LinkedList(2)
    y: scala.collection.mutable.LinkedList[Int] = LinkedList(2)
    
    scala> val z = x ++: y
    z: scala.collection.mutable.LinkedList[Int] = LinkedList(1, 2)

    This overload exists because: for the implementation of ++: we should reuse that of ++ because many collections override it with more efficient versions.

    Since TraversableOnce has no ++ method, we have to implement that directly, but Traversable and down can use the overload.

    B

    the element type of the returned collection.

    That

    the class of the returned collection. In the standard library configuration, That is always LinkedHashMap[A, B] if the elements contained in the resulting collection are pairs of type (A, B). This is because an implicit of type CanBuildFrom[LinkedHashMap, (A, B), LinkedHashMap[A, B]] is defined in object LinkedHashMap. Otherwise, That resolves to the most specific type that doesn't have to contain pairs of type (A, B), which is Iterable.

    that

    the traversable to append.

    bf

    an implicit value of class CanBuildFrom which determines the result class That from the current representation type Repr and the new element type B. This is usually the canBuildFrom value defined in object LinkedHashMap.

    returns

    a new collection of type That which contains all elements of this linked hash map followed by all elements of that.

    Definition Classes
    TraversableLike
  10. def ++:[B](that: TraversableOnce[B]): `LinkedHashMap`[B]

    [use case] As with ++, returns a new collection containing the elements from the left operand followed by the elements from the right operand.

    [use case]

    As with ++, returns a new collection containing the elements from the left operand followed by the elements from the right operand.

    It differs from ++ in that the right operand determines the type of the resulting collection rather than the left one. Mnemonic: the COLon is on the side of the new COLlection type.

    Example:

    scala> val x = List(1)
    x: List[Int] = List(1)
    
    scala> val y = LinkedList(2)
    y: scala.collection.mutable.LinkedList[Int] = LinkedList(2)
    
    scala> val z = x ++: y
    z: scala.collection.mutable.LinkedList[Int] = LinkedList(1, 2)
    B

    the element type of the returned collection.

    that

    the traversable to append.

    returns

    a new linked hash map which contains all elements of this linked hash map followed by all elements of that.

    Definition Classes
    TraversableLike
    Full Signature

    def ++:[B >: (A, B), That](that: TraversableOnce[B])(implicit bf: CanBuildFrom[LinkedHashMap[A, B], B, That]): That

  11. def ++=(xs: TraversableOnce[(A, B)]): LinkedHashMap.this.type

    adds all elements produced by a TraversableOnce to this linked hash map.

    adds all elements produced by a TraversableOnce to this linked hash map.

    xs

    the TraversableOnce producing the elements to add.

    returns

    the linked hash map itself.

    Definition Classes
    Growable
  12. def +=(kv: (A, B)): LinkedHashMap.this.type

    Adds a new key/value pair to this map.

    Adds a new key/value pair to this map. If the map already contains a mapping for the key, it will be overridden by the new value.

    kv

    the key/value pair.

    returns

    the map itself

    Definition Classes
    LinkedHashMapMapLikeBuilderGrowable
  13. def +=(elem1: (A, B), elem2: (A, B), elems: (A, B)*): LinkedHashMap.this.type

    adds two or more elements to this linked hash map.

    adds two or more elements to this linked hash map.

    elem1

    the first element to add.

    elem2

    the second element to add.

    elems

    the remaining elements to add.

    returns

    the linked hash map itself

    Definition Classes
    Growable
  14. def -(elem1: A, elem2: A, elems: A*): LinkedHashMap[A, B]

    Creates a new map with all the key/value mappings of this map except mappings with keys equal to any of the two or more specified keys.

    Creates a new map with all the key/value mappings of this map except mappings with keys equal to any of the two or more specified keys.

    elem1

    the first element to remove.

    elem2

    the second element to remove.

    elems

    the remaining elements to remove.

    returns

    a new map containing all the mappings of this map except mappings with a key equal to elem1, elem2 or any of elems.

    Definition Classes
    MapLikeSubtractable
    Annotations
    @migration
    Migration

    (Changed in version 2.8.0) - creates a new map. Use -= to remove an element from this map and return that map itself.

  15. def -(key: A): LinkedHashMap[A, B]

    Creates a new map with all the key/value mappings of this map except the key/value mapping with the specified key.

    Creates a new map with all the key/value mappings of this map except the key/value mapping with the specified key.

    key

    the key to be removed

    returns

    a new map with all the mappings of this map except that with a key key.

    Definition Classes
    MapLikeMapLikeSubtractableGenMapLike
    Annotations
    @migration
    Migration

    (Changed in version 2.8.0) - creates a new map. Use -= to remove an element from this map and return that map itself.

  16. def --(xs: GenTraversableOnce[A]): LinkedHashMap[A, B]

    Creates a new map with all the key/value mappings of this map except mappings with keys equal to any of those provided by the specified traversable object.

    Creates a new map with all the key/value mappings of this map except mappings with keys equal to any of those provided by the specified traversable object.

    xs

    the traversable object.

    returns

    a new map with all the key/value mappings of this map except mappings with a key equal to a key from xs.

    Definition Classes
    MapLikeSubtractable
    Annotations
    @migration
    Migration

    (Changed in version 2.8.0) -- creates a new map. Use --= to remove an element from this map and return that map itself.

  17. def --=(xs: TraversableOnce[A]): LinkedHashMap.this.type

    Removes all elements produced by an iterator from this linked hash map.

    Removes all elements produced by an iterator from this linked hash map.

    xs

    the iterator producing the elements to remove.

    returns

    the linked hash map itself

    Definition Classes
    Shrinkable
  18. def -=(key: A): LinkedHashMap.this.type

    Removes a key from this map.

    Removes a key from this map.

    key

    the key to be removed

    returns

    the map itself.

    Definition Classes
    LinkedHashMapMapLikeShrinkable
  19. def -=(elem1: A, elem2: A, elems: A*): LinkedHashMap.this.type

    Removes two or more elements from this linked hash map.

    Removes two or more elements from this linked hash map.

    elem1

    the first element to remove.

    elem2

    the second element to remove.

    elems

    the remaining elements to remove.

    returns

    the linked hash map itself

    Definition Classes
    Shrinkable
  20. def ->[B](y: B): (LinkedHashMap[A, B], B)

    Implicit information
    This member is added by an implicit conversion from LinkedHashMap[A, B] to ArrowAssoc[LinkedHashMap[A, B]] performed by method any2ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()
  21. def /:[B](z: B)(op: (B, (A, B)) ⇒ B): B

    Applies a binary operator to a start value and all elements of this linked hash map, going left to right.

    Applies a binary operator to a start value and all elements of this linked hash map, going left to right.

    Note: /: is alternate syntax for foldLeft; z /: xs is the same as xs foldLeft z.

    Examples:

    Note that the folding function used to compute b is equivalent to that used to compute c.

    scala> val a = LinkedList(1,2,3,4)
    a: scala.collection.mutable.LinkedList[Int] = LinkedList(1, 2, 3, 4)
    
    scala> val b = (5 /: a)(_+_)
    b: Int = 15
    
    scala> val c = (5 /: a)((x,y) => x + y)
    c: Int = 15
    B

    the result type of the binary operator.

    z

    the start value.

    op

    the binary operator.

    returns

    the result of inserting op between consecutive elements of this linked hash map, going left to right with the start value z on the left:

    op(...op(op(z, x_1), x_2), ..., x_n)

    where x1, ..., xn are the elements of this linked hash map.

    Definition Classes
    TraversableOnceGenTraversableOnce
  22. def :\[B](z: B)(op: ((A, B), B) ⇒ B): B

    Applies a binary operator to all elements of this linked hash map and a start value, going right to left.

    Applies a binary operator to all elements of this linked hash map and a start value, going right to left.

    Note: :\ is alternate syntax for foldRight; xs :\ z is the same as xs foldRight z.

    Examples:

    Note that the folding function used to compute b is equivalent to that used to compute c.

    scala> val a = LinkedList(1,2,3,4)
    a: scala.collection.mutable.LinkedList[Int] = LinkedList(1, 2, 3, 4)
    
    scala> val b = (a :\ 5)(_+_)
    b: Int = 15
    
    scala> val c = (a :\ 5)((x,y) => x + y)
    c: Int = 15
    B

    the result type of the binary operator.

    z

    the start value

    op

    the binary operator

    returns

    the result of inserting op between consecutive elements of this linked hash map, going right to left with the start value z on the right:

    op(x_1, op(x_2, ... op(x_n, z)...))

    where x1, ..., xn are the elements of this linked hash map.

    Definition Classes
    TraversableOnceGenTraversableOnce
  23. final def ==(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef
  24. final def ==(arg0: Any): Boolean

    Test two objects for equality.

    Test two objects for equality. The expression x == that is equivalent to if (x eq null) that eq null else x.equals(that).

    returns

    true if the receiver object is equivalent to the argument; false otherwise.

    Definition Classes
    Any
  25. var _loadFactor: Int

    Attributes
    protected
    Definition Classes
    HashTable
  26. def addEntry(e: LinkedEntry[A, B]): Unit

    Add entry to table pre: no entry with same key exists

    Add entry to table pre: no entry with same key exists

    Attributes
    protected
    Definition Classes
    HashTable
  27. def addString(b: StringBuilder, start: String, sep: String, end: String): StringBuilder

    Appends all bindings of this map to a string builder using start, end, and separator strings.

    Appends all bindings of this map to a string builder using start, end, and separator strings. The written text begins with the string start and ends with the string end. Inside, the string representations of all bindings of this map in the form of key -> value are separated by the string sep.

    b

    the builder to which strings are appended.

    start

    the starting string.

    sep

    the separator string.

    end

    the ending string.

    returns

    the string builder b to which elements were appended.

    Definition Classes
    MapLikeTraversableOnce
  28. def addString(b: StringBuilder): StringBuilder

    Appends all elements of this linked hash map to a string builder.

    Appends all elements of this linked hash map to a string builder. The written text consists of the string representations (w.r.t. the method toString) of all elements of this linked hash map without any separator string.

    Example:

    scala> val a = LinkedList(1,2,3,4)
    a: scala.collection.mutable.LinkedList[Int] = LinkedList(1, 2, 3, 4)
    
    scala> val b = new StringBuilder()
    b: StringBuilder =
    
    scala> val h = a.addString(b)
    b: StringBuilder = 1234
    b

    the string builder to which elements are appended.

    returns

    the string builder b to which elements were appended.

    Definition Classes
    TraversableOnce
  29. def addString(b: StringBuilder, sep: String): StringBuilder

    Appends all elements of this linked hash map to a string builder using a separator string.

    Appends all elements of this linked hash map to a string builder using a separator string. The written text consists of the string representations (w.r.t. the method toString) of all elements of this linked hash map, separated by the string sep.

    Example:

    scala> val a = LinkedList(1,2,3,4)
    a: scala.collection.mutable.LinkedList[Int] = LinkedList(1, 2, 3, 4)
    
    scala> val b = new StringBuilder()
    b: StringBuilder =
    
    scala> a.addString(b, ", ")
    res0: StringBuilder = 1, 2, 3, 4
    b

    the string builder to which elements are appended.

    sep

    the separator string.

    returns

    the string builder b to which elements were appended.

    Definition Classes
    TraversableOnce
  30. def aggregate[B](z: B)(seqop: (B, (A, B)) ⇒ B, combop: (B, B) ⇒ B): B

    Aggregates the results of applying an operator to subsequent elements.

    Aggregates the results of applying an operator to subsequent elements.

    This is a more general form of fold and reduce. It has similar semantics, but does not require the result to be a supertype of the element type. It traverses the elements in different partitions sequentially, using seqop to update the result, and then applies combop to results from different partitions. The implementation of this operation may operate on an arbitrary number of collection partitions, so combop may be invoked an arbitrary number of times.

    For example, one might want to process some elements and then produce a Set. In this case, seqop would process an element and append it to the list, while combop would concatenate two lists from different partitions together. The initial value z would be an empty set.

    pc.aggregate(Set[Int]())(_ += process(_), _ ++ _)

    Another example is calculating geometric mean from a collection of doubles (one would typically require big doubles for this).

    B

    the type of accumulated results

    z

    the initial value for the accumulated result of the partition - this will typically be the neutral element for the seqop operator (e.g. Nil for list concatenation or 0 for summation)

    seqop

    an operator used to accumulate results within a partition

    combop

    an associative operator used to combine results from different partitions

    Definition Classes
    TraversableOnceGenTraversableOnce
  31. def alwaysInitSizeMap: Boolean

    Attributes
    protected
    Definition Classes
    HashTable
  32. def andThen[C](k: (B) ⇒ C): PartialFunction[A, C]

    Composes this partial function with a transformation function that gets applied to results of this partial function.

    Composes this partial function with a transformation function that gets applied to results of this partial function.

    C

    the result type of the transformation function.

    k

    the transformation function

    returns

    a partial function with the same domain as this partial function, which maps arguments x to k(this(x)).

    Definition Classes
    PartialFunctionFunction1
  33. def apply(key: A): B

    Retrieves the value which is associated with the given key.

    Retrieves the value which is associated with the given key. This method invokes the default method of the map if there is no mapping from the given key to a value. Unless overridden, the default method throws a NoSuchElementException.

    key

    the key

    returns

    the value associated with the given key, or the result of the map's default method, if none exists.

    Definition Classes
    MapLikeGenMapLikeFunction1
  34. def applyOrElse[A1 <: A, B1 >: B](x: A1, default: (A1) ⇒ B1): B1

    TODO: comment

    TODO: comment

    Definition Classes
    PartialFunction
    Since

    2.10

  35. final def asInstanceOf[T0]: T0

    Cast the receiver object to be of type T0.

    Cast the receiver object to be of type T0.

    Note that the success of a cast at runtime is modulo Scala's erasure semantics. Therefore the expression 1.asInstanceOf[String] will throw a ClassCastException at runtime, while the expression List(1).asInstanceOf[List[String]] will not. In the latter example, because the type argument is erased as part of compilation it is not possible to check whether the contents of the list are of the requested type.

    returns

    the receiver object.

    Definition Classes
    Any
    Exceptions thrown
    ClassCastException

    if the receiver object is not an instance of the erasure of type T0.

  36. def asParIterable: ParIterable[(A, B)]

    Implicit information
    This member is added by an implicit conversion from LinkedHashMap[A, B] to TraversableOps[(A, B)] performed by method traversable2ops in scala.collection.parallel.
    Definition Classes
    TraversableOps
  37. def asParSeq: ParSeq[(A, B)]

    Implicit information
    This member is added by an implicit conversion from LinkedHashMap[A, B] to TraversableOps[(A, B)] performed by method traversable2ops in scala.collection.parallel.
    Definition Classes
    TraversableOps
  38. def calcSizeMapSize(tableLength: Int): Int

    Attributes
    protected
    Definition Classes
    HashTable
  39. def canEqual(that: Any): Boolean

    Method called from equality methods, so that user-defined subclasses can refuse to be equal to other collections of the same kind.

    Method called from equality methods, so that user-defined subclasses can refuse to be equal to other collections of the same kind.

    that

    The object with which this linked hash map should be compared

    returns

    true, if this linked hash map can possibly equal that, false otherwise. The test takes into consideration only the run-time types of objects but ignores their elements.

    Definition Classes
    IterableLikeEquals
  40. def clear(): Unit

    Removes all bindings from the map.

    Removes all bindings from the map. After this operation has completed, the map will be empty.

    Definition Classes
    LinkedHashMapMapLikeBuilderGrowableClearable
  41. def clearTable(): Unit

    Remove all entries from table

    Remove all entries from table

    Attributes
    protected
    Definition Classes
    HashTable
  42. def clone(): LinkedHashMap[A, B]

    Create a copy of the receiver object.

    Create a copy of the receiver object.

    The default implementation of the clone method is platform dependent.

    returns

    a copy of the receiver object.

    Definition Classes
    MapLikeCloneable → AnyRef
    Note

    not specified by SLS as a member of AnyRef

  43. def collect[B](pf: PartialFunction[A, B]): `LinkedHashMap`[B]

    [use case] Builds a new collection by applying a partial function to all elements of this linked hash map on which the function is defined.

    [use case]

    Builds a new collection by applying a partial function to all elements of this linked hash map on which the function is defined.

    B

    the element type of the returned collection.

    pf

    the partial function which filters and maps the linked hash map.

    returns

    a new linked hash map resulting from applying the given partial function pf to each element on which it is defined and collecting the results. The order of the elements is preserved.

    Definition Classes
    TraversableLikeGenTraversableLike
    Full Signature

    def collect[B, That](pf: PartialFunction[(A, B), B])(implicit bf: CanBuildFrom[LinkedHashMap[A, B], B, That]): That

  44. def collectFirst[B](pf: PartialFunction[(A, B), B]): Option[B]

    Finds the first element of the linked hash map for which the given partial function is defined, and applies the partial function to it.

    Finds the first element of the linked hash map for which the given partial function is defined, and applies the partial function to it.

    pf

    the partial function

    returns

    an option value containing pf applied to the first value for which it is defined, or None if none exists.

    Definition Classes
    TraversableOnce
    Example:
    1. Seq("a", 1, 5L).collectFirst({ case x: Int => x*10 }) = Some(10)

  45. def companion: GenericCompanion[Iterable]

    The factory companion object that builds instances of class LinkedHashMap.

    The factory companion object that builds instances of class LinkedHashMap. (or its Iterable superclass where class LinkedHashMap is not a Seq.)

    Definition Classes
    IterableIterableGenIterableTraversableTraversableGenTraversableGenericTraversableTemplate
  46. def compose[A](g: (A) ⇒ A): (A) ⇒ B

    Composes two instances of Function1 in a new Function1, with this function applied last.

    Composes two instances of Function1 in a new Function1, with this function applied last.

    A

    the type to which function g can be applied

    g

    a function A => T1

    returns

    a new function f such that f(x) == apply(g(x))

    Definition Classes
    Function1
    Annotations
    @unspecialized()
  47. def contains(key: A): Boolean

    Tests whether this map contains a binding for a key.

    Tests whether this map contains a binding for a key.

    key

    the key

    returns

    true if there is a binding for key in this map, false otherwise.

    Definition Classes
    MapLikeGenMapLike
  48. def copyToArray(xs: Array[A], start: Int, len: Int): Unit

    [use case] Copies elements of this linked hash map to an array.

    [use case]

    Copies elements of this linked hash map to an array. Fills the given array xs with at most len elements of this linked hash map, starting at position start. Copying will stop once either the end of the current linked hash map is reached, or the end of the array is reached, or len elements have been copied.

    xs

    the array to fill.

    start

    the starting index.

    len

    the maximal number of elements to copy.

    Definition Classes
    IterableLikeTraversableLikeTraversableOnceGenTraversableOnce
    Full Signature

    def copyToArray[B >: (A, B)](xs: Array[B], start: Int, len: Int): Unit

  49. def copyToArray(xs: Array[A]): Unit

    [use case] Copies values of this linked hash map to an array.

    [use case]

    Copies values of this linked hash map to an array. Fills the given array xs with values of this linked hash map. Copying will stop once either the end of the current linked hash map is reached, or the end of the array is reached.

    xs

    the array to fill.

    Definition Classes
    TraversableOnceGenTraversableOnce
    Full Signature

    def copyToArray[B >: (A, B)](xs: Array[B]): Unit

  50. def copyToArray(xs: Array[A], start: Int): Unit

    [use case] Copies values of this linked hash map to an array.

    [use case]

    Copies values of this linked hash map to an array. Fills the given array xs with values of this linked hash map, beginning at index start. Copying will stop once either the end of the current linked hash map is reached, or the end of the array is reached.

    xs

    the array to fill.

    start

    the starting index.

    Definition Classes
    TraversableOnceGenTraversableOnce
    Full Signature

    def copyToArray[B >: (A, B)](xs: Array[B], start: Int): Unit

  51. def copyToBuffer[B >: (A, B)](dest: Buffer[B]): Unit

    Copies all elements of this linked hash map to a buffer.

    Copies all elements of this linked hash map to a buffer.

    dest

    The buffer to which elements are copied.

    Definition Classes
    TraversableOnce
  52. def count(p: ((A, B)) ⇒ Boolean): Int

    Counts the number of elements in the linked hash map which satisfy a predicate.

    Counts the number of elements in the linked hash map which satisfy a predicate.

    p

    the predicate used to test elements.

    returns

    the number of elements satisfying the predicate p.

    Definition Classes
    TraversableOnceGenTraversableOnce
  53. def default(key: A): B

    Defines the default value computation for the map, returned when a key is not found The method implemented here throws an exception, but it might be overridden in subclasses.

    Defines the default value computation for the map, returned when a key is not found The method implemented here throws an exception, but it might be overridden in subclasses.

    key

    the given key value for which a binding is missing.

    Definition Classes
    MapLikeGenMapLike
    Exceptions thrown
    `NoSuchElementException`

  54. def drop(n: Int): LinkedHashMap[A, B]

    Selects all elements except first n ones.

    Selects all elements except first n ones.

    n

    the number of elements to drop from this linked hash map.

    returns

    a linked hash map consisting of all elements of this linked hash map except the first n ones, or else the empty linked hash map, if this linked hash map has less than n elements.

    Definition Classes
    IterableLikeTraversableLikeGenTraversableLike
  55. def dropRight(n: Int): LinkedHashMap[A, B]

    Selects all elements except last n ones.

    Selects all elements except last n ones.

    n

    The number of elements to take

    returns

    a linked hash map consisting of all elements of this linked hash map except the last n ones, or else the empty linked hash map, if this linked hash map has less than n elements.

    Definition Classes
    IterableLike
  56. def dropWhile(p: ((A, B)) ⇒ Boolean): LinkedHashMap[A, B]

    Drops longest prefix of elements that satisfy a predicate.

    Drops longest prefix of elements that satisfy a predicate.

    returns

    the longest suffix of this linked hash map whose first element does not satisfy the predicate p.

    Definition Classes
    TraversableLikeGenTraversableLike
  57. def elemEquals(key1: A, key2: A): Boolean

    Attributes
    protected
    Definition Classes
    HashTable
  58. def elemHashCode(key: A): Int

    Attributes
    protected
    Definition Classes
    HashUtils
  59. def empty: LinkedHashMap[A, B]

    The empty map of the same type as this map

    The empty map of the same type as this map

    returns

    an empty map of type This.

    Definition Classes
    LinkedHashMapMapMapMapLike
  60. def ensuring(cond: (LinkedHashMap[A, B]) ⇒ Boolean, msg: ⇒ Any): LinkedHashMap[A, B]

    Implicit information
    This member is added by an implicit conversion from LinkedHashMap[A, B] to Ensuring[LinkedHashMap[A, B]] performed by method any2Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  61. def ensuring(cond: (LinkedHashMap[A, B]) ⇒ Boolean): LinkedHashMap[A, B]

    Implicit information
    This member is added by an implicit conversion from LinkedHashMap[A, B] to Ensuring[LinkedHashMap[A, B]] performed by method any2Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  62. def ensuring(cond: Boolean, msg: ⇒ Any): LinkedHashMap[A, B]

    Implicit information
    This member is added by an implicit conversion from LinkedHashMap[A, B] to Ensuring[LinkedHashMap[A, B]] performed by method any2Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  63. def ensuring(cond: Boolean): LinkedHashMap[A, B]

    Implicit information
    This member is added by an implicit conversion from LinkedHashMap[A, B] to Ensuring[LinkedHashMap[A, B]] performed by method any2Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  64. def entriesIterator: Iterator[LinkedEntry[A, B]]

    An iterator returning all entries.

    An iterator returning all entries.

    Attributes
    protected
    Definition Classes
    HashTable
  65. final def eq(arg0: AnyRef): Boolean

    Tests whether the argument (arg0) is a reference to the receiver object (this).

    Tests whether the argument (arg0) is a reference to the receiver object (this).

    The eq method implements an equivalence relation on non-null instances of AnyRef, and has three additional properties:

    • It is consistent: for any non-null instances x and y of type AnyRef, multiple invocations of x.eq(y) consistently returns true or consistently returns false.
    • For any non-null instance x of type AnyRef, x.eq(null) and null.eq(x) returns false.
    • null.eq(null) returns true.

    When overriding the equals or hashCode methods, it is important to ensure that their behavior is consistent with reference equality. Therefore, if two objects are references to each other (o1 eq o2), they should be equal to each other (o1 == o2) and they should hash to the same value (o1.hashCode == o2.hashCode).

    returns

    true if the argument is a reference to the receiver object; false otherwise.

    Definition Classes
    AnyRef
  66. def equals(that: Any): Boolean

    Compares two maps structurally; i.

    Compares two maps structurally; i.e. checks if all mappings contained in this map are also contained in the other map, and vice versa.

    that

    the other map

    returns

    true if both maps contain exactly the same mappings, false otherwise.

    Definition Classes
    GenMapLikeEquals → AnyRef → Any
  67. def exists(p: ((A, B)) ⇒ Boolean): Boolean

    Tests whether a predicate holds for some of the elements of this linked hash map.

    Tests whether a predicate holds for some of the elements of this linked hash map.

    p

    the predicate used to test elements.

    returns

    true if the given predicate p holds for some of the elements of this linked hash map, otherwise false.

    Definition Classes
    IterableLikeTraversableLikeTraversableOnceGenTraversableOnce
  68. def filter(p: ((A, B)) ⇒ Boolean): LinkedHashMap[A, B]

    Selects all elements of this linked hash map which satisfy a predicate.

    Selects all elements of this linked hash map which satisfy a predicate.

    p

    the predicate used to test elements.

    returns

    a new linked hash map consisting of all elements of this linked hash map that satisfy the given predicate p. The order of the elements is preserved.

    Definition Classes
    TraversableLikeGenTraversableLike
  69. def filterKeys(p: (A) ⇒ Boolean): Map[A, B]

    Filters this map by retaining only keys satisfying a predicate.

    Filters this map by retaining only keys satisfying a predicate.

    p

    the predicate used to test keys

    returns

    an immutable map consisting only of those key value pairs of this map where the key satisfies the predicate p. The resulting map wraps the original map without copying any elements.

    Definition Classes
    MapLikeGenMapLike
  70. def filterNot(p: ((A, B)) ⇒ Boolean): LinkedHashMap[A, B]

    Returns a new map with all key/value pairs for which the predicate p returns true.

    Returns a new map with all key/value pairs for which the predicate p returns true.

    Note: This method works by successively removing elements fro which the predicate is false from this set. If removal is slow, or you expect that most elements of the set will be removed, you might consider using filter with a negated predicate instead.

    p

    A predicate over key-value pairs

    returns

    A new map containing elements not satisfying the predicate.

    Definition Classes
    MapLikeTraversableLikeGenTraversableLike
  71. def finalize(): Unit

    Called by the garbage collector on the receiver object when there are no more references to the object.

    Called by the garbage collector on the receiver object when there are no more references to the object.

    The details of when and if the finalize method is invoked, as well as the interaction between finalize and non-local returns and exceptions, are all platform dependent.

    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws()
    Note

    not specified by SLS as a member of AnyRef

  72. def find(p: ((A, B)) ⇒ Boolean): Option[(A, B)]

    Finds the first element of the linked hash map satisfying a predicate, if any.

    Finds the first element of the linked hash map satisfying a predicate, if any.

    p

    the predicate used to test elements.

    returns

    an option value containing the first element in the linked hash map that satisfies p, or None if none exists.

    Definition Classes
    IterableLikeTraversableLikeTraversableOnceGenTraversableOnce
  73. def findEntry(key: A): LinkedEntry[A, B]

    Find entry with given key in table, null if not found.

    Find entry with given key in table, null if not found.

    Attributes
    protected
    Definition Classes
    HashTable
  74. var firstEntry: Entry

    Attributes
    protected
  75. def flatMap[B](f: (A) ⇒ GenTraversableOnce[B]): `LinkedHashMap`[B]

    [use case] Builds a new collection by applying a function to all elements of this linked hash map and using the elements of the resulting collections.

    [use case]

    Builds a new collection by applying a function to all elements of this linked hash map and using the elements of the resulting collections.

    For example:

    def getWords(lines: Seq[String]): Seq[String] = lines flatMap (line => line split "\\W+")

    The type of the resulting collection is guided by the static type of linked hash map. This might cause unexpected results sometimes. For example:

    // lettersOf will return a Seq[Char] of likely repeated letters, instead of a Set
    def lettersOf(words: Seq[String]) = words flatMap (word => word.toSet)
    
    // lettersOf will return a Set[Char], not a Seq
    def lettersOf(words: Seq[String]) = words.toSet flatMap (word => word.toSeq)
    
    // xs will be a an Iterable[Int]
    val xs = Map("a" -> List(11,111), "b" -> List(22,222)).flatMap(_._2)
    
    // ys will be a Map[Int, Int]
    val ys = Map("a" -> List(1 -> 11,1 -> 111), "b" -> List(2 -> 22,2 -> 222)).flatMap(_._2)
    B

    the element type of the returned collection.

    f

    the function to apply to each element.

    returns

    a new linked hash map resulting from applying the given collection-valued function f to each element of this linked hash map and concatenating the results.

    Definition Classes
    TraversableLikeGenTraversableLikeFilterMonadic
    Full Signature

    def flatMap[B, That](f: ((A, B)) ⇒ GenTraversableOnce[B])(implicit bf: CanBuildFrom[LinkedHashMap[A, B], B, That]): That

  76. def flatMap[B](f: ((A, B)) ⇒ GenTraversableOnce[B]): TraversableOnce[B]

    Implicit information
    This member is added by an implicit conversion from LinkedHashMap[A, B] to MonadOps[(A, B)] performed by method MonadOps in scala.collection.TraversableOnce.
    Definition Classes
    MonadOps
  77. def flatten[B]: `LinkedHashMap`[B]

    [use case] Converts this linked hash map of traversable collections into a linked hash map formed by the elements of these traversable collections.

    [use case]

    Converts this linked hash map of traversable collections into a linked hash map formed by the elements of these traversable collections.

    The resulting collection's type will be guided by the static type of linked hash map. For example:

    val xs = List(Set(1, 2, 3), Set(1, 2, 3))
    // xs == List(1, 2, 3, 1, 2, 3)
    
    val ys = Set(List(1, 2, 3), List(3, 2, 1))
    // ys == Set(1, 2, 3)
    B

    the type of the elements of each traversable collection.

    returns

    a new linked hash map resulting from concatenating all element linked hash maps.

    Definition Classes
    GenericTraversableTemplate
    Full Signature

    def flatten[B](implicit asTraversable: ((A, B)) ⇒ GenTraversableOnce[B]): Iterable[B]

  78. def fold[A1 >: (A, B)](z: A1)(op: (A1, A1) ⇒ A1): A1

    Folds the elements of this linked hash map using the specified associative binary operator.

    Folds the elements of this linked hash map using the specified associative binary operator.

    The order in which operations are performed on elements is unspecified and may be nondeterministic.

    A1

    a type parameter for the binary operator, a supertype of A.

    z

    a neutral element for the fold operation; may be added to the result an arbitrary number of times, and must not change the result (e.g., Nil for list concatenation, 0 for addition, or 1 for multiplication.)

    op

    a binary operator that must be associative

    returns

    the result of applying fold operator op between all the elements and z

    Definition Classes
    TraversableOnceGenTraversableOnce
  79. def foldLeft[B](z: B)(op: (B, (A, B)) ⇒ B): B

    Applies a binary operator to a start value and all elements of this linked hash map, going left to right.

    Applies a binary operator to a start value and all elements of this linked hash map, going left to right.

    B

    the result type of the binary operator.

    z

    the start value.

    op

    the binary operator.

    returns

    the result of inserting op between consecutive elements of this linked hash map, going left to right with the start value z on the left:

    op(...op(z, x_1), x_2, ..., x_n)

    where x1, ..., xn are the elements of this linked hash map.

    Definition Classes
    TraversableOnceGenTraversableOnce
  80. def foldRight[B](z: B)(op: ((A, B), B) ⇒ B): B

    Applies a binary operator to all elements of this linked hash map and a start value, going right to left.

    Applies a binary operator to all elements of this linked hash map and a start value, going right to left.

    B

    the result type of the binary operator.

    z

    the start value.

    op

    the binary operator.

    returns

    the result of inserting op between consecutive elements of this linked hash map, going right to left with the start value z on the right:

    op(x_1, op(x_2, ... op(x_n, z)...))

    where x1, ..., xn are the elements of this linked hash map.

    Definition Classes
    IterableLikeTraversableOnceGenTraversableOnce
  81. def forall(p: ((A, B)) ⇒ Boolean): Boolean

    Tests whether a predicate holds for all elements of this linked hash map.

    Tests whether a predicate holds for all elements of this linked hash map.

    p

    the predicate used to test elements.

    returns

    true if the given predicate p holds for all elements of this linked hash map, otherwise false.

    Definition Classes
    IterableLikeTraversableLikeTraversableOnceGenTraversableOnce
  82. def foreach(f: (A) ⇒ Unit): Unit

    [use case] Applies a function f to all elements of this linked hash map.

    [use case]

    Applies a function f to all elements of this linked hash map.

    Note: this method underlies the implementation of most other bulk operations. Subclasses should re-implement this method if a more efficient implementation exists.

    f

    the function that is applied for its side-effect to every element. The result of function f is discarded.

    Definition Classes
    LinkedHashMapIterableLikeGenericTraversableTemplateTraversableLikeGenTraversableLikeTraversableOnceGenTraversableOnceFilterMonadic
    Full Signature

    def foreach[U](f: ((A, B)) ⇒ U): Unit

  83. def foreachEntry[C](f: (Entry) ⇒ C): Unit

    Avoid iterator for a 2x faster traversal.

    Avoid iterator for a 2x faster traversal.

    Attributes
    protected
    Definition Classes
    LinkedHashMapHashTable
  84. def formatted(fmtstr: String): String

    Returns string formatted according to given format string.

    Returns string formatted according to given format string. Format strings are as for String.format (@see java.lang.String.format).

    Implicit information
    This member is added by an implicit conversion from LinkedHashMap[A, B] to StringFormat performed by method any2stringfmt in scala.Predef.
    Definition Classes
    StringFormat
    Annotations
    @inline()
  85. def genericBuilder[B]: Builder[B, Iterable[B]]

    The generic builder that builds instances of LinkedHashMap at arbitrary element types.

    The generic builder that builds instances of LinkedHashMap at arbitrary element types.

    Definition Classes
    GenericTraversableTemplate
  86. def get(key: A): Option[B]

    Optionally returns the value associated with a key.

    Optionally returns the value associated with a key.

    key

    the key value

    returns

    an option value containing the value associated with key in this map, or None if none exists.

    Definition Classes
    LinkedHashMapMapLikeGenMapLike
  87. final def getClass(): Class[_]

    A representation that corresponds to the dynamic class of the receiver object.

    A representation that corresponds to the dynamic class of the receiver object.

    The nature of the representation is platform dependent.

    returns

    a representation that corresponds to the dynamic class of the receiver object.

    Definition Classes
    AnyRef → Any
    Note

    not specified by SLS as a member of AnyRef

  88. def getOrElse(key: A, default: ⇒ B): B

    [use case] Returns the value associated with a key, or a default value if the key is not contained in the map.

    [use case]

    Returns the value associated with a key, or a default value if the key is not contained in the map.

    key

    the key.

    default

    a computation that yields a default value in case no binding for key is found in the map.

    returns

    the value associated with key if it exists, otherwise the result of the default computation.

    Definition Classes
    MapLikeGenMapLike
    Full Signature

    def getOrElse[B1 >: B](key: A, default: ⇒ B1): B1

  89. def getOrElseUpdate(key: A, op: ⇒ B): B

    If given key is already in this map, returns associated value.

    If given key is already in this map, returns associated value.

    Otherwise, computes value from given expression op, stores with key in map and returns that value.

    key

    the key to test

    op

    the computation yielding the value to associate with key, if key is previously unbound.

    returns

    the value associated with key (either previously or as a result of executing the method).

    Definition Classes
    MapLike
  90. def groupBy[K](f: ((A, B)) ⇒ K): Map[K, LinkedHashMap[A, B]]

    Partitions this linked hash map into a map of linked hash maps according to some discriminator function.

    Partitions this linked hash map into a map of linked hash maps according to some discriminator function.

    Note: this method is not re-implemented by views. This means when applied to a view it will always force the view and return a new linked hash map.

    K

    the type of keys returned by the discriminator function.

    f

    the discriminator function.

    returns

    A map from keys to linked hash maps such that the following invariant holds:

    (xs partition f)(k) = xs filter (x => f(x) == k)

    That is, every key k is bound to a linked hash map of those elements x for which f(x) equals k.

    Definition Classes
    TraversableLikeGenTraversableLike
  91. def grouped(size: Int): Iterator[LinkedHashMap[A, B]]

    Partitions elements in fixed size linked hash maps.

    Partitions elements in fixed size linked hash maps.

    size

    the number of elements per group

    returns

    An iterator producing linked hash maps of size size, except the last will be truncated if the elements don't divide evenly.

    Definition Classes
    IterableLike
    See also

    Iterator, method grouped

  92. def hasDefiniteSize: Boolean

    Tests whether this linked hash map is known to have a finite size.

    Tests whether this linked hash map is known to have a finite size. All strict collections are known to have finite size. For a non-strict collection such as Stream, the predicate returns true if all elements have been computed. It returns false if the stream is not yet evaluated to the end.

    Note: many collection methods will not work on collections of infinite sizes.

    returns

    true if this collection is known to have finite size, false otherwise.

    Definition Classes
    TraversableLikeTraversableOnceGenTraversableOnce
  93. def hashCode(): Int

    The hashCode method for reference types.

    The hashCode method for reference types. See hashCode in Any.

    returns

    the hash code value for this object.

    Definition Classes
    GenMapLike → AnyRef → Any
  94. def head: (A, B)

    Selects the first element of this linked hash map.

    Selects the first element of this linked hash map.

    returns

    the first element of this linked hash map.

    Definition Classes
    IterableLikeTraversableLikeGenTraversableLike
    Exceptions thrown
    `NoSuchElementException`

    if the linked hash map is empty.

  95. def headOption: Option[(A, B)]

    Optionally selects the first element.

    Optionally selects the first element.

    returns

    the first element of this linked hash map if it is nonempty, None if it is empty.

    Definition Classes
    TraversableLikeGenTraversableLike
  96. def ifParSeq[R](isbody: (ParSeq[(A, B)]) ⇒ R): Otherwise[R]

    Implicit information
    This member is added by an implicit conversion from LinkedHashMap[A, B] to TraversableOps[(A, B)] performed by method traversable2ops in scala.collection.parallel.
    Definition Classes
    TraversableOps
  97. final def improve(hcode: Int, seed: Int): Int

    Attributes
    protected
    Definition Classes
    HashUtils
  98. final def index(hcode: Int): Int

    Attributes
    protected
    Definition Classes
    HashTable
  99. def init: LinkedHashMap[A, B]

    Selects all elements except the last.

    Selects all elements except the last.

    returns

    a linked hash map consisting of all elements of this linked hash map except the last one.

    Definition Classes
    TraversableLikeGenTraversableLike
    Exceptions thrown
    `UnsupportedOperationException`

    if the linked hash map is empty.

  100. def initWithContents(c: Contents[A, LinkedEntry[A, B]]): Unit

    Attributes
    protected
    Definition Classes
    HashTable
  101. def initialSize: Int

    The initial size of the hash table.

    The initial size of the hash table.

    Attributes
    protected
    Definition Classes
    HashTable
  102. def inits: Iterator[LinkedHashMap[A, B]]

    Iterates over the inits of this linked hash map.

    Iterates over the inits of this linked hash map. The first value will be this linked hash map and the final one will be an empty linked hash map, with the intervening values the results of successive applications of init.

    returns

    an iterator over all the inits of this linked hash map

    Definition Classes
    TraversableLike
    Example:
    1. List(1,2,3).inits = Iterator(List(1,2,3), List(1,2), List(1), Nil)

  103. def isDefinedAt(key: A): Boolean

    Tests whether this map contains a binding for a key.

    Tests whether this map contains a binding for a key. This method, which implements an abstract method of trait PartialFunction, is equivalent to contains.

    key

    the key

    returns

    true if there is a binding for key in this map, false otherwise.

    Definition Classes
    MapLikeGenMapLikePartialFunction
  104. def isEmpty: Boolean

    Tests whether the map is empty.

    Tests whether the map is empty.

    returns

    true if the map does not contain any key/value binding, false otherwise.

    Definition Classes
    MapLikeIterableLikeTraversableLikeTraversableOnceGenTraversableOnce
  105. final def isInstanceOf[T0]: Boolean

    Test whether the dynamic type of the receiver object is T0.

    Test whether the dynamic type of the receiver object is T0.

    Note that the result of the test is modulo Scala's erasure semantics. Therefore the expression 1.isInstanceOf[String] will return false, while the expression List(1).isInstanceOf[List[String]] will return true. In the latter example, because the type argument is erased as part of compilation it is not possible to check whether the contents of the list are of the specified type.

    returns

    true if the receiver object is an instance of erasure of type T0; false otherwise.

    Definition Classes
    Any
  106. def isParIterable: Boolean

    Implicit information
    This member is added by an implicit conversion from LinkedHashMap[A, B] to TraversableOps[(A, B)] performed by method traversable2ops in scala.collection.parallel.
    Definition Classes
    TraversableOps
  107. def isParSeq: Boolean

    Implicit information
    This member is added by an implicit conversion from LinkedHashMap[A, B] to TraversableOps[(A, B)] performed by method traversable2ops in scala.collection.parallel.
    Definition Classes
    TraversableOps
  108. def isParallel: Boolean

    Implicit information
    This member is added by an implicit conversion from LinkedHashMap[A, B] to TraversableOps[(A, B)] performed by method traversable2ops in scala.collection.parallel.
    Definition Classes
    TraversableOps
  109. def isSizeMapDefined: Boolean

    Attributes
    protected
    Definition Classes
    HashTable
  110. final def isTraversableAgain: Boolean

    Tests whether this linked hash map can be repeatedly traversed.

    Tests whether this linked hash map can be repeatedly traversed.

    returns

    true

    Definition Classes
    TraversableLikeGenTraversableLikeGenTraversableOnce
  111. def iterator: Iterator[(A, B)]

    Creates a new iterator over all key/value pairs of this map

    Creates a new iterator over all key/value pairs of this map

    returns

    the new iterator

    Definition Classes
    LinkedHashMapMapLikeIterableLikeGenIterableLike
  112. def keySet: Set[A]

    Collects all keys of this map in a set.

    Collects all keys of this map in a set.

    returns

    a set containing all keys of this map.

    Definition Classes
    MapLikeGenMapLike
  113. def keys: Iterable[A]

    Collects all keys of this map in an iterable collection.

    Collects all keys of this map in an iterable collection.

    returns

    the keys of this map as an iterable.

    Definition Classes
    MapLikeGenMapLike
    Annotations
    @migration
    Migration

    (Changed in version 2.8.0) keys returns Iterable[A] rather than Iterator[A].

  114. def keysIterator: Iterator[A]

    Creates an iterator for all keys.

    Creates an iterator for all keys.

    returns

    an iterator over all keys.

    Definition Classes
    LinkedHashMapMapLikeGenMapLike
  115. def last: (A, B)

    Selects the last element.

    Selects the last element.

    returns

    The last element of this linked hash map.

    Definition Classes
    TraversableLikeGenTraversableLike
    Exceptions thrown
    NoSuchElementException

    If the linked hash map is empty.

  116. var lastEntry: Entry

    Attributes
    protected
  117. def lastOption: Option[(A, B)]

    Optionally selects the last element.

    Optionally selects the last element.

    returns

    the last element of this linked hash map$ if it is nonempty, None if it is empty.

    Definition Classes
    TraversableLikeGenTraversableLike
  118. def lift: (A) ⇒ Option[B]

    Turns this partial function into an plain function returning an Option result.

    Turns this partial function into an plain function returning an Option result.

    returns

    a function that takes an argument x to Some(this(x)) if this is defined for x, and to None otherwise.

    Definition Classes
    PartialFunction
    See also

    Function.unlift

  119. def map[B](f: (A) ⇒ B): `LinkedHashMap`[B]

    [use case] Builds a new collection by applying a function to all elements of this linked hash map.

    [use case]

    Builds a new collection by applying a function to all elements of this linked hash map.

    B

    the element type of the returned collection.

    f

    the function to apply to each element.

    returns

    a new linked hash map resulting from applying the given function f to each element of this linked hash map and collecting the results.

    Definition Classes
    TraversableLikeGenTraversableLikeFilterMonadic
    Full Signature

    def map[B, That](f: ((A, B)) ⇒ B)(implicit bf: CanBuildFrom[LinkedHashMap[A, B], B, That]): That

  120. def map[B](f: ((A, B)) ⇒ B): TraversableOnce[B]

    Implicit information
    This member is added by an implicit conversion from LinkedHashMap[A, B] to MonadOps[(A, B)] performed by method MonadOps in scala.collection.TraversableOnce.
    Definition Classes
    MonadOps
  121. def mapResult[NewTo](f: (LinkedHashMap[A, B]) ⇒ NewTo): Builder[(A, B), NewTo]

    Creates a new builder by applying a transformation function to the results of this builder.

    Creates a new builder by applying a transformation function to the results of this builder.

    NewTo

    the type of collection returned by f.

    f

    the transformation function.

    returns

    a new builder which is the same as the current builder except that a transformation function is applied to this builder's result.

    Definition Classes
    Builder
  122. def mapValues[C](f: (B) ⇒ C): Map[A, C]

    Transforms this map by applying a function to every retrieved value.

    Transforms this map by applying a function to every retrieved value.

    f

    the function used to transform values of this map.

    returns

    a map view which maps every key of this map to f(this(key)). The resulting map wraps the original map without copying any elements.

    Definition Classes
    MapLikeGenMapLike
  123. def max: A

    [use case] Finds the largest element.

    [use case]

    Finds the largest element.

    returns

    the largest element of this linked hash map.

    Definition Classes
    TraversableOnceGenTraversableOnce
    Full Signature

    def max[B >: (A, B)](implicit cmp: Ordering[B]): (A, B)

  124. def maxBy[B](f: ((A, B)) ⇒ B)(implicit cmp: Ordering[B]): (A, B)

    Definition Classes
    TraversableOnceGenTraversableOnce
  125. def min: A

    [use case] Finds the smallest element.

    [use case]

    Finds the smallest element.

    returns

    the smallest element of this linked hash map

    Definition Classes
    TraversableOnceGenTraversableOnce
    Full Signature

    def min[B >: (A, B)](implicit cmp: Ordering[B]): (A, B)

  126. def minBy[B](f: ((A, B)) ⇒ B)(implicit cmp: Ordering[B]): (A, B)

    Definition Classes
    TraversableOnceGenTraversableOnce
  127. def mkString: String

    Displays all elements of this linked hash map in a string.

    Displays all elements of this linked hash map in a string.

    returns

    a string representation of this linked hash map. In the resulting string the string representations (w.r.t. the method toString) of all elements of this linked hash map follow each other without any separator string.

    Definition Classes
    TraversableOnceGenTraversableOnce
  128. def mkString(sep: String): String

    Displays all elements of this linked hash map in a string using a separator string.

    Displays all elements of this linked hash map in a string using a separator string.

    sep

    the separator string.

    returns

    a string representation of this linked hash map. In the resulting string the string representations (w.r.t. the method toString) of all elements of this linked hash map are separated by the string sep.

    Definition Classes
    TraversableOnceGenTraversableOnce
    Example:
    1. List(1, 2, 3).mkString("|") = "1|2|3"

  129. def mkString(start: String, sep: String, end: String): String

    Displays all elements of this linked hash map in a string using start, end, and separator strings.

    Displays all elements of this linked hash map in a string using start, end, and separator strings.

    start

    the starting string.

    sep

    the separator string.

    end

    the ending string.

    returns

    a string representation of this linked hash map. The resulting string begins with the string start and ends with the string end. Inside, the string representations (w.r.t. the method toString) of all elements of this linked hash map are separated by the string sep.

    Definition Classes
    TraversableOnceGenTraversableOnce
    Example:
    1. List(1, 2, 3).mkString("(", "; ", ")") = "(1; 2; 3)"

  130. final def ne(arg0: AnyRef): Boolean

    Equivalent to !(this eq that).

    Equivalent to !(this eq that).

    returns

    true if the argument is not a reference to the receiver object; false otherwise.

    Definition Classes
    AnyRef
  131. def newBuilder: Builder[(A, B), LinkedHashMap[A, B]]

    A common implementation of newBuilder for all mutable maps in terms of empty.

    A common implementation of newBuilder for all mutable maps in terms of empty.

    Overrides MapLike implementation for better efficiency.

    Attributes
    protected[this]
    Definition Classes
    MapLikeMapLikeTraversableLikeHasNewBuilder
  132. def nnSizeMapAdd(h: Int): Unit

    Attributes
    protected
    Definition Classes
    HashTable
  133. def nnSizeMapRemove(h: Int): Unit

    Attributes
    protected
    Definition Classes
    HashTable
  134. def nnSizeMapReset(tableLength: Int): Unit

    Attributes
    protected
    Definition Classes
    HashTable
  135. def nonEmpty: Boolean

    Tests whether the linked hash map is not empty.

    Tests whether the linked hash map is not empty.

    returns

    true if the linked hash map contains at least one element, false otherwise.

    Definition Classes
    TraversableOnceGenTraversableOnce
  136. final def notify(): Unit

    Wakes up a single thread that is waiting on the receiver object's monitor.

    Wakes up a single thread that is waiting on the receiver object's monitor.

    Definition Classes
    AnyRef
    Note

    not specified by SLS as a member of AnyRef

  137. final def notifyAll(): Unit

    Wakes up all threads that are waiting on the receiver object's monitor.

    Wakes up all threads that are waiting on the receiver object's monitor.

    Definition Classes
    AnyRef
    Note

    not specified by SLS as a member of AnyRef

  138. def orElse[A1 <: A, B1 >: B](that: PartialFunction[A1, B1]): PartialFunction[A1, B1]

    Composes this partial function with a fallback partial function which gets applied where this partial function is not defined.

    Composes this partial function with a fallback partial function which gets applied where this partial function is not defined.

    A1

    the argument type of the fallback function

    B1

    the result type of the fallback function

    that

    the fallback function

    returns

    a partial function which has as domain the union of the domains of this partial function and that. The resulting partial function takes x to this(x) where this is defined, and to that(x) where it is not.

    Definition Classes
    PartialFunction
  139. def par: ParMap[A, B]

    Returns a parallel implementation of this collection.

    Returns a parallel implementation of this collection.

    For most collection types, this method creates a new parallel collection by copying all the elements. For these collection, par takes linear time. Mutable collections in this category do not produce a mutable parallel collection that has the same underlying dataset, so changes in one collection will not be reflected in the other one.

    Specific collections (e.g. ParArray or mutable.ParHashMap) override this default behaviour by creating a parallel collection which shares the same underlying dataset. For these collections, par takes constant or sublinear time.

    All parallel collections return a reference to themselves.

    returns

    a parallel implementation of this collection

    Definition Classes
    Parallelizable
  140. def parCombiner: Combiner[(A, B), ParMap[A, B]]

    The default par implementation uses the combiner provided by this method to create a new parallel collection.

    The default par implementation uses the combiner provided by this method to create a new parallel collection.

    returns

    a combiner for the parallel collection of type ParRepr

    Attributes
    protected[this]
    Definition Classes
    MapLikeMapLikeTraversableLikeParallelizable
  141. def partition(p: ((A, B)) ⇒ Boolean): (LinkedHashMap[A, B], LinkedHashMap[A, B])

    Partitions this linked hash map in two linked hash maps according to a predicate.

    Partitions this linked hash map in two linked hash maps according to a predicate.

    p

    the predicate on which to partition.

    returns

    a pair of linked hash maps: the first linked hash map consists of all elements that satisfy the predicate p and the second linked hash map consists of all elements that don't. The relative order of the elements in the resulting linked hash maps is the same as in the original linked hash map.

    Definition Classes
    TraversableLikeGenTraversableLike
  142. def product: A

    [use case] Multiplies up the elements of this collection.

    [use case]

    Multiplies up the elements of this collection.

    returns

    the product of all elements in this linked hash map of numbers of type Int. Instead of Int, any other type T with an implicit Numeric[T] implementation can be used as element type of the linked hash map and as result type of product. Examples of such types are: Long, Float, Double, BigInt.

    Definition Classes
    TraversableOnceGenTraversableOnce
    Full Signature

    def product[B >: (A, B)](implicit num: Numeric[B]): B

  143. def put(key: A, value: B): Option[B]

    Adds a new key/value pair to this map and optionally returns previously bound value.

    Adds a new key/value pair to this map and optionally returns previously bound value. If the map already contains a mapping for the key, it will be overridden by the new value.

    key

    the key to update

    value

    the new value

    returns

    an option value containing the value associated with the key before the put operation was executed, or None if key was not defined in the map before.

    Definition Classes
    LinkedHashMapMapLike
  144. def reduce[A1 >: (A, B)](op: (A1, A1) ⇒ A1): A1

    Reduces the elements of this linked hash map using the specified associative binary operator.

    Reduces the elements of this linked hash map using the specified associative binary operator.

    The order in which operations are performed on elements is unspecified and may be nondeterministic.

    A1

    A type parameter for the binary operator, a supertype of A.

    op

    A binary operator that must be associative.

    returns

    The result of applying reduce operator op between all the elements if the linked hash map is nonempty.

    Definition Classes
    TraversableOnceGenTraversableOnce
    Exceptions thrown
    UnsupportedOperationException

    if this linked hash map is empty.

  145. def reduceLeft[B >: (A, B)](op: (B, (A, B)) ⇒ B): B

    Definition Classes
    TraversableOnce
  146. def reduceLeftOption[B >: (A, B)](op: (B, (A, B)) ⇒ B): Option[B]

    Optionally applies a binary operator to all elements of this linked hash map, going left to right.

    Optionally applies a binary operator to all elements of this linked hash map, going left to right.

    B

    the result type of the binary operator.

    op

    the binary operator.

    returns

    an option value containing the result of reduceLeft(op) is this linked hash map is nonempty, None otherwise.

    Definition Classes
    TraversableOnceGenTraversableOnce
  147. def reduceOption[A1 >: (A, B)](op: (A1, A1) ⇒ A1): Option[A1]

    Reduces the elements of this linked hash map, if any, using the specified associative binary operator.

    Reduces the elements of this linked hash map, if any, using the specified associative binary operator.

    The order in which operations are performed on elements is unspecified and may be nondeterministic.

    A1

    A type parameter for the binary operator, a supertype of A.

    op

    A binary operator that must be associative.

    returns

    An option value containing result of applying reduce operator op between all the elements if the collection is nonempty, and None otherwise.

    Definition Classes
    TraversableOnceGenTraversableOnce
  148. def reduceRight[B >: (A, B)](op: ((A, B), B) ⇒ B): B

    Applies a binary operator to all elements of this linked hash map, going right to left.

    Applies a binary operator to all elements of this linked hash map, going right to left.

    B

    the result type of the binary operator.

    op

    the binary operator.

    returns

    the result of inserting op between consecutive elements of this linked hash map, going right to left:

    op(x_1, op(x_2, ..., op(x_{n-1}, x_n)...))

    where x1, ..., xn are the elements of this linked hash map.

    Definition Classes
    IterableLikeTraversableOnceGenTraversableOnce
    Exceptions thrown
    `UnsupportedOperationException`

    if this linked hash map is empty.

  149. def reduceRightOption[B >: (A, B)](op: ((A, B), B) ⇒ B): Option[B]

    Optionally applies a binary operator to all elements of this linked hash map, going right to left.

    Optionally applies a binary operator to all elements of this linked hash map, going right to left.

    B

    the result type of the binary operator.

    op

    the binary operator.

    returns

    an option value containing the result of reduceRight(op) is this linked hash map is nonempty, None otherwise.

    Definition Classes
    TraversableOnceGenTraversableOnce
  150. def remove(key: A): Option[B]

    Removes a key from this map, returning the value associated previously with that key as an option.

    Removes a key from this map, returning the value associated previously with that key as an option.

    key

    the key to be removed

    returns

    an option value containing the value associated previously with key, or None if key was not defined in the map before.

    Definition Classes
    LinkedHashMapMapLike
  151. def removeEntry(key: A): LinkedEntry[A, B]

    Remove entry from table if present.

    Remove entry from table if present.

    Attributes
    protected
    Definition Classes
    HashTable
  152. def repr: LinkedHashMap[A, B]

    The collection of type linked hash map underlying this TraversableLike object.

    The collection of type linked hash map underlying this TraversableLike object. By default this is implemented as the TraversableLike object itself, but this can be overridden.

    Definition Classes
    TraversableLikeGenTraversableLike
  153. def result(): LinkedHashMap[A, B]

    The result when this map is used as a builder

    The result when this map is used as a builder

    returns

    the map representation itself.

    Definition Classes
    MapLikeBuilder
  154. def retain(p: (A, B) ⇒ Boolean): LinkedHashMap.this.type

    Retains only those mappings for which the predicate p returns true.

    Retains only those mappings for which the predicate p returns true.

    p

    The test predicate

    Definition Classes
    MapLike
  155. def reversed: List[(A, B)]

    Attributes
    protected[this]
    Definition Classes
    TraversableOnce
  156. def run[U](x: A)(action: (B) ⇒ U): Boolean

    TODO: comment

    TODO: comment

    Definition Classes
    PartialFunction
    Since

    2.10

  157. def runWith[U](action: (B) ⇒ U): (A) ⇒ Boolean

    TODO: comment

    TODO: comment

    Definition Classes
    PartialFunction
    Since

    2.10

  158. def sameElements(that: GenIterable[A]): Boolean

    [use case] Checks if the other iterable collection contains the same elements in the same order as this linked hash map.

    [use case]

    Checks if the other iterable collection contains the same elements in the same order as this linked hash map.

    that

    the collection to compare with.

    returns

    true, if both collections contain the same elements in the same order, false otherwise.

    Definition Classes
    IterableLikeGenIterableLike
    Full Signature

    def sameElements[B >: (A, B)](that: GenIterable[B]): Boolean

  159. def scan[B >: (A, B), That](z: B)(op: (B, B) ⇒ B)(implicit cbf: CanBuildFrom[LinkedHashMap[A, B], B, That]): That

    Computes a prefix scan of the elements of the collection.

    Computes a prefix scan of the elements of the collection.

    Note: The neutral element z may be applied more than once.

    B

    element type of the resulting collection

    That

    type of the resulting collection

    z

    neutral element for the operator op

    op

    the associative operator for the scan

    cbf

    combiner factory which provides a combiner

    returns

    a new linked hash map containing the prefix scan of the elements in this linked hash map

    Definition Classes
    TraversableLikeGenTraversableLike
  160. def scanLeft[B, That](z: B)(op: (B, (A, B)) ⇒ B)(implicit bf: CanBuildFrom[LinkedHashMap[A, B], B, That]): That

    Produces a collection containing cumulative results of applying the operator going left to right.

    Produces a collection containing cumulative results of applying the operator going left to right.

    B

    the type of the elements in the resulting collection

    That

    the actual type of the resulting collection

    z

    the initial value

    op

    the binary operator applied to the intermediate result and the element

    bf

    an implicit value of class CanBuildFrom which determines the result class That from the current representation type Repr and the new element type B. This is usually the canBuildFrom value defined in object LinkedHashMap.

    returns

    collection with intermediate results

    Definition Classes
    TraversableLikeGenTraversableLike
  161. def scanRight[B, That](z: B)(op: ((A, B), B) ⇒ B)(implicit bf: CanBuildFrom[LinkedHashMap[A, B], B, That]): That

    Produces a collection containing cumulative results of applying the operator going right to left.

    Produces a collection containing cumulative results of applying the operator going right to left. The head of the collection is the last cumulative result.

    Example:

    List(1, 2, 3, 4).scanRight(0)(_ + _) == List(10, 9, 7, 4, 0)
    B

    the type of the elements in the resulting collection

    That

    the actual type of the resulting collection

    z

    the initial value

    op

    the binary operator applied to the intermediate result and the element

    bf

    an implicit value of class CanBuildFrom which determines the result class That from the current representation type Repr and the new element type B. This is usually the canBuildFrom value defined in object LinkedHashMap.

    returns

    collection with intermediate results

    Definition Classes
    TraversableLikeGenTraversableLike
    Annotations
    @migration
    Migration

    (Changed in version 2.9.0) The behavior of scanRight has changed. The previous behavior can be reproduced with scanRight.reverse.

  162. var seedvalue: Int

    Definition Classes
    HashTable
  163. val self: Any

    Implicit information
    This member is added by an implicit conversion from LinkedHashMap[A, B] to StringAdd performed by method any2stringadd in scala.Predef.
    Definition Classes
    StringAdd
  164. val self: Any

    Implicit information
    This member is added by an implicit conversion from LinkedHashMap[A, B] to StringFormat performed by method any2stringfmt in scala.Predef.
    Definition Classes
    StringFormat
  165. def seq: Map[A, B]

    A version of this collection with all of the operations implemented sequentially (i.

    A version of this collection with all of the operations implemented sequentially (i.e. in a single-threaded manner).

    This method returns a reference to this collection. In parallel collections, it is redefined to return a sequential implementation of this collection. In both cases, it has O(1) complexity.

    returns

    a sequential view of the collection.

    Definition Classes
    MapMapGenMapGenMapLikeIterableIterableGenIterableTraversableTraversableGenTraversableParallelizableTraversableOnceGenTraversableOnce
  166. def size: Int

    The size of this linked hash map.

    The size of this linked hash map.

    returns

    the number of elements in this linked hash map.

    Definition Classes
    LinkedHashMapGenTraversableLikeTraversableOnceGenTraversableOnce
  167. def sizeHint(coll: scala.collection.TraversableLike[_, _], delta: Int = 0): Unit

    Gives a hint that one expects the result of this builder to have the same size as the given collection, plus some delta.

    Gives a hint that one expects the result of this builder to have the same size as the given collection, plus some delta. This will provide a hint only if the collection is known to have a cheap size method. Currently this is assumed to be the case if and only if the collection is of type IndexedSeqLike. Some builder classes will optimize their representation based on the hint. However, builder implementations are still required to work correctly even if the hint is wrong, i.e. a different number of elements is added.

    coll

    the collection which serves as a hint for the result's size.

    delta

    a correction to add to the coll.size to produce the size hint.

    Definition Classes
    Builder
  168. def sizeHint(size: Int): Unit

    Gives a hint how many elements are expected to be added when the next result is called.

    Gives a hint how many elements are expected to be added when the next result is called. Some builder classes will optimize their representation based on the hint. However, builder implementations are still required to work correctly even if the hint is wrong, i.e. a different number of elements is added.

    size

    the hint how many elements will be added.

    Definition Classes
    Builder
  169. def sizeHintBounded(size: Int, boundingColl: scala.collection.TraversableLike[_, _]): Unit

    Gives a hint how many elements are expected to be added when the next result is called, together with an upper bound given by the size of some other collection.

    Gives a hint how many elements are expected to be added when the next result is called, together with an upper bound given by the size of some other collection. Some builder classes will optimize their representation based on the hint. However, builder implementations are still required to work correctly even if the hint is wrong, i.e. a different number of elements is added.

    size

    the hint how many elements will be added.

    boundingColl

    the bounding collection. If it is an IndexedSeqLike, then sizes larger than collection's size are reduced.

    Definition Classes
    Builder
  170. final def sizeMapBucketBitSize: Int

    Attributes
    protected
    Definition Classes
    HashUtils
  171. final def sizeMapBucketSize: Int

    Attributes
    protected
    Definition Classes
    HashUtils
  172. def sizeMapDisable(): Unit

    Attributes
    protected
    Definition Classes
    HashTable
  173. def sizeMapInit(tableLength: Int): Unit

    Attributes
    protected
    Definition Classes
    HashTable
  174. def sizeMapInitAndRebuild(): Unit

    Attributes
    protected
    Definition Classes
    HashTable
  175. var sizemap: Array[Int]

    The array keeping track of the number of elements in 32 element blocks.

    The array keeping track of the number of elements in 32 element blocks.

    Attributes
    protected
    Definition Classes
    HashTable
  176. def slice(from: Int, until: Int): LinkedHashMap[A, B]

    Selects an interval of elements.

    Selects an interval of elements. The returned collection is made up of all elements x which satisfy the invariant:

    from <= indexOf(x) < until
    returns

    a linked hash map containing the elements greater than or equal to index from extending up to (but not including) index until of this linked hash map.

    Definition Classes
    IterableLikeTraversableLikeGenTraversableLike
  177. def sliding(size: Int, step: Int): Iterator[LinkedHashMap[A, B]]

    Groups elements in fixed size blocks by passing a "sliding window" over them (as opposed to partitioning them, as is done in grouped.

    Groups elements in fixed size blocks by passing a "sliding window" over them (as opposed to partitioning them, as is done in grouped.)

    size

    the number of elements per group

    step

    the distance between the first elements of successive groups (defaults to 1)

    returns

    An iterator producing linked hash maps of size size, except the last and the only element will be truncated if there are fewer elements than size.

    Definition Classes
    IterableLike
    See also

    Iterator, method sliding

  178. def sliding(size: Int): Iterator[LinkedHashMap[A, B]]

    Groups elements in fixed size blocks by passing a "sliding window" over them (as opposed to partitioning them, as is done in grouped.

    Groups elements in fixed size blocks by passing a "sliding window" over them (as opposed to partitioning them, as is done in grouped.)

    size

    the number of elements per group

    returns

    An iterator producing linked hash maps of size size, except the last and the only element will be truncated if there are fewer elements than size.

    Definition Classes
    IterableLike
    See also

    Iterator, method sliding

  179. def span(p: ((A, B)) ⇒ Boolean): (LinkedHashMap[A, B], LinkedHashMap[A, B])

    Splits this linked hash map into a prefix/suffix pair according to a predicate.

    Splits this linked hash map into a prefix/suffix pair according to a predicate.

    Note: c span p is equivalent to (but possibly more efficient than) (c takeWhile p, c dropWhile p), provided the evaluation of the predicate p does not cause any side-effects.

    returns

    a pair consisting of the longest prefix of this linked hash map whose elements all satisfy p, and the rest of this linked hash map.

    Definition Classes
    TraversableLikeGenTraversableLike
  180. def splitAt(n: Int): (LinkedHashMap[A, B], LinkedHashMap[A, B])

    Splits this linked hash map into two at a given position.

    Splits this linked hash map into two at a given position. Note: c splitAt n is equivalent to (but possibly more efficient than) (c take n, c drop n).

    n

    the position at which to split.

    returns

    a pair of linked hash maps consisting of the first n elements of this linked hash map, and the other elements.

    Definition Classes
    TraversableLikeGenTraversableLike
  181. def stringPrefix: String

    Defines the prefix of this object's toString representation.

    Defines the prefix of this object's toString representation.

    returns

    a string representation which starts the result of toString applied to this linked hash map. Unless overridden in subclasses, the string prefix of every map is "Map".

    Definition Classes
    MapLikeTraversableLikeGenTraversableLike
  182. def sum: A

    [use case] Sums up the elements of this collection.

    [use case]

    Sums up the elements of this collection.

    returns

    the sum of all elements in this linked hash map of numbers of type Int. Instead of Int, any other type T with an implicit Numeric[T] implementation can be used as element type of the linked hash map and as result type of sum. Examples of such types are: Long, Float, Double, BigInt.

    Definition Classes
    TraversableOnceGenTraversableOnce
    Full Signature

    def sum[B >: (A, B)](implicit num: Numeric[B]): B

  183. final def synchronized[T0](arg0: ⇒ T0): T0

    Definition Classes
    AnyRef
  184. var table: Array[HashEntry[A, LinkedEntry[A, B]]]

    The actual hash table.

    The actual hash table.

    Attributes
    protected
    Definition Classes
    HashTable
  185. var tableSize: Int

    The number of mappings contained in this hash table.

    The number of mappings contained in this hash table.

    Attributes
    protected
    Definition Classes
    HashTable
  186. def tableSizeSeed: Int

    Attributes
    protected
    Definition Classes
    HashTable
  187. def tail: LinkedHashMap[A, B]

    Selects all elements except the first.

    Selects all elements except the first.

    returns

    a linked hash map consisting of all elements of this linked hash map except the first one.

    Definition Classes
    TraversableLikeGenTraversableLike
    Exceptions thrown
    `UnsupportedOperationException`

    if the linked hash map is empty.

  188. def tails: Iterator[LinkedHashMap[A, B]]

    Iterates over the tails of this linked hash map.

    Iterates over the tails of this linked hash map. The first value will be this linked hash map and the final one will be an empty linked hash map, with the intervening values the results of successive applications of tail.

    returns

    an iterator over all the tails of this linked hash map

    Definition Classes
    TraversableLike
    Example:
    1. List(1,2,3).tails = Iterator(List(1,2,3), List(2,3), List(3), Nil)

  189. def take(n: Int): LinkedHashMap[A, B]

    Selects first n elements.

    Selects first n elements.

    n

    Tt number of elements to take from this linked hash map.

    returns

    a linked hash map consisting only of the first n elements of this linked hash map, or else the whole linked hash map, if it has less than n elements.

    Definition Classes
    IterableLikeTraversableLikeGenTraversableLike
  190. def takeRight(n: Int): LinkedHashMap[A, B]

    Selects last n elements.

    Selects last n elements.

    n

    the number of elements to take

    returns

    a linked hash map consisting only of the last n elements of this linked hash map, or else the whole linked hash map, if it has less than n elements.

    Definition Classes
    IterableLike
  191. def takeWhile(p: ((A, B)) ⇒ Boolean): LinkedHashMap[A, B]

    Takes longest prefix of elements that satisfy a predicate.

    Takes longest prefix of elements that satisfy a predicate.

    returns

    the longest prefix of this linked hash map whose elements all satisfy the predicate p.

    Definition Classes
    IterableLikeTraversableLikeGenTraversableLike
  192. def thisCollection: Iterable[(A, B)]

    The underlying collection seen as an instance of LinkedHashMap.

    The underlying collection seen as an instance of LinkedHashMap. By default this is implemented as the current collection object itself, but this can be overridden.

    Attributes
    protected[this]
    Definition Classes
    IterableLikeTraversableLike
  193. var threshold: Int

    The next size value at which to resize (capacity * load factor).

    The next size value at which to resize (capacity * load factor).

    Attributes
    protected
    Definition Classes
    HashTable
  194. def toArray: Array[A]

    [use case] Converts this linked hash map to an array.

    [use case]

    Converts this linked hash map to an array.

    returns

    an array containing all elements of this linked hash map. An ClassTag must be available for the element type of this linked hash map.

    Definition Classes
    TraversableOnceGenTraversableOnce
    Full Signature

    def toArray[B >: (A, B)](implicit arg0: ClassTag[B]): Array[B]

  195. def toBuffer[C >: (A, B)]: Buffer[C]

    Converts this linked hash map to a mutable buffer.

    Converts this linked hash map to a mutable buffer.

    returns

    a buffer containing all elements of this linked hash map.

    Definition Classes
    MapLikeTraversableOnceGenTraversableOnce
  196. def toCollection(repr: LinkedHashMap[A, B]): Iterable[(A, B)]

    A conversion from collections of type Repr to LinkedHashMap objects.

    A conversion from collections of type Repr to LinkedHashMap objects. By default this is implemented as just a cast, but this can be overridden.

    Attributes
    protected[this]
    Definition Classes
    IterableLikeTraversableLike
  197. def toIndexedSeq: IndexedSeq[(A, B)]

    Converts this linked hash map to an indexed sequence.

    Converts this linked hash map to an indexed sequence.

    returns

    an indexed sequence containing all elements of this linked hash map.

    Definition Classes
    TraversableOnceGenTraversableOnce
  198. def toIterable: Iterable[(A, B)]

    Converts this linked hash map to an iterable collection.

    Converts this linked hash map to an iterable collection. Note that the choice of target Iterable is lazy in this default implementation as this TraversableOnce may be lazy and unevaluated (i.e. it may be an iterator which is only traversable once).

    returns

    an Iterable containing all elements of this linked hash map.

    Definition Classes
    IterableLikeTraversableOnceGenTraversableOnce
  199. def toIterator: Iterator[(A, B)]

    Returns an Iterator over the elements in this linked hash map.

    Returns an Iterator over the elements in this linked hash map. Will return the same Iterator if this instance is already an Iterator.

    returns

    an Iterator containing all elements of this linked hash map.

    Definition Classes
    IterableLikeTraversableLikeGenTraversableOnce
  200. def toList: List[(A, B)]

    Converts this linked hash map to a list.

    Converts this linked hash map to a list.

    returns

    a list containing all elements of this linked hash map.

    Definition Classes
    TraversableOnceGenTraversableOnce
  201. def toMap[T, U]: Map[T, U]

    [use case] Converts this linked hash map to a map.

    [use case]

    Converts this linked hash map to a map. This method is unavailable unless the elements are members of Tuple2, each ((T, U)) becoming a key-value pair in the map. Duplicate keys will be overwritten by later keys: if this is an unordered collection, which key is in the resulting map is undefined.

    returns

    a map of type immutable.Map[T, U] containing all key/value pairs of type (T, U) of this linked hash map.

    Definition Classes
    TraversableOnceGenTraversableOnce
    Full Signature

    def toMap[T, U](implicit ev: <:<[(A, B), (T, U)]): Map[T, U]

  202. def toParArray: ParArray[(A, B)]

    Implicit information
    This member is added by an implicit conversion from LinkedHashMap[A, B] to TraversableOps[(A, B)] performed by method traversable2ops in scala.collection.parallel.
    Definition Classes
    TraversableOps
  203. def toSeq: Seq[(A, B)]

    Overridden for efficiency.

    Overridden for efficiency.

    returns

    a sequence containing all elements of this linked hash map.

    Definition Classes
    MapLikeTraversableOnceGenTraversableOnce
  204. def toSet[B >: (A, B)]: Set[B]

    Converts this linked hash map to a set.

    Converts this linked hash map to a set.

    returns

    a set containing all elements of this linked hash map.

    Definition Classes
    TraversableOnceGenTraversableOnce
  205. def toStream: Stream[(A, B)]

    Converts this linked hash map to a stream.

    Converts this linked hash map to a stream.

    returns

    a stream containing all elements of this linked hash map.

    Definition Classes
    IterableLikeTraversableLikeGenTraversableOnce
  206. def toString(): String

    Converts this linked hash map to a string.

    Converts this linked hash map to a string.

    returns

    a string representation of this collection. By default this string consists of the stringPrefix of this linked hash map, followed by all elements separated by commas and enclosed in parentheses.

    Definition Classes
    MapLikeTraversableLikeFunction1 → AnyRef → Any
  207. def toTraversable: Traversable[(A, B)]

    Converts this linked hash map to an unspecified Traversable.

    Converts this linked hash map to an unspecified Traversable. Will return the same collection if this instance is already Traversable.

    returns

    a Traversable containing all elements of this linked hash map.

    Definition Classes
    TraversableLikeTraversableOnceGenTraversableOnce
  208. def transform(f: (A, B) ⇒ B): LinkedHashMap.this.type

    Applies a transformation function to all values contained in this map.

    Applies a transformation function to all values contained in this map. The transformation function produces new values from existing keys associated values.

    f

    the transformation to apply

    returns

    the map itself.

    Definition Classes
    MapLike
  209. def transpose[B](implicit asTraversable: ((A, B)) ⇒ GenTraversableOnce[B]): Iterable[Iterable[B]]

    Transposes this linked hash map of traversable collections into a linked hash map of linked hash maps.

    Transposes this linked hash map of traversable collections into a linked hash map of linked hash maps.

    B

    the type of the elements of each traversable collection.

    asTraversable

    an implicit conversion which asserts that the element type of this linked hash map is a Traversable.

    returns

    a two-dimensional linked hash map of linked hash maps which has as nth row the nth column of this linked hash map.

    Definition Classes
    GenericTraversableTemplate
    Annotations
    @migration
    Migration

    (Changed in version 2.9.0) transpose throws an IllegalArgumentException if collections are not uniformly sized.

    Exceptions thrown
    `IllegalArgumentException`

    if all collections in this linked hash map are not of the same size.

  210. def unzip[A1, A2](implicit asPair: ((A, B)) ⇒ (A1, A2)): (Iterable[A1], Iterable[A2])

    Converts this linked hash map of pairs into two collections of the first and second half of each pair.

    Converts this linked hash map of pairs into two collections of the first and second half of each pair.

    A1

    the type of the first half of the element pairs

    A2

    the type of the second half of the element pairs

    asPair

    an implicit conversion which asserts that the element type of this linked hash map is a pair.

    returns

    a pair linked hash maps, containing the first, respectively second half of each element pair of this linked hash map.

    Definition Classes
    GenericTraversableTemplate
  211. def unzip3[A1, A2, A3](implicit asTriple: ((A, B)) ⇒ (A1, A2, A3)): (Iterable[A1], Iterable[A2], Iterable[A3])

    Converts this linked hash map of triples into three collections of the first, second, and third element of each triple.

    Converts this linked hash map of triples into three collections of the first, second, and third element of each triple.

    A1

    the type of the first member of the element triples

    A2

    the type of the second member of the element triples

    A3

    the type of the third member of the element triples

    asTriple

    an implicit conversion which asserts that the element type of this linked hash map is a triple.

    returns

    a triple linked hash maps, containing the first, second, respectively third member of each element triple of this linked hash map.

    Definition Classes
    GenericTraversableTemplate
  212. def update(key: A, value: B): Unit

    Adds a new key/value pair to this map.

    Adds a new key/value pair to this map. If the map already contains a mapping for the key, it will be overridden by the new value.

    key

    The key to update

    value

    The new value

    Definition Classes
    MapLike
  213. def updated[B1 >: B](key: A, value: B1): Map[A, B1]

    Creates a new map consisting of all key/value pairs of the current map plus a new pair of a given key and value.

    Creates a new map consisting of all key/value pairs of the current map plus a new pair of a given key and value.

    B1

    the type of the added value

    key

    The key to add

    value

    The new value

    returns

    A fresh immutable map with the binding from key to value added to this map.

    Definition Classes
    MapLikeMapLike
  214. def values: Iterable[B]

    Collects all values of this map in an iterable collection.

    Collects all values of this map in an iterable collection.

    returns

    the values of this map as an iterable.

    Definition Classes
    MapLikeGenMapLike
    Annotations
    @migration
    Migration

    (Changed in version 2.8.0) values returns Iterable[B] rather than Iterator[B].

  215. def valuesIterator: Iterator[B]

    Creates an iterator for all values in this map.

    Creates an iterator for all values in this map.

    returns

    an iterator over all values that are associated with some key in this map.

    Definition Classes
    LinkedHashMapMapLikeGenMapLike
  216. def view(from: Int, until: Int): IterableView[(A, B), LinkedHashMap[A, B]]

    Creates a non-strict view of a slice of this linked hash map.

    Creates a non-strict view of a slice of this linked hash map.

    Note: the difference between view and slice is that view produces a view of the current linked hash map, whereas slice produces a new linked hash map.

    Note: view(from, to) is equivalent to view.slice(from, to)

    from

    the index of the first element of the view

    until

    the index of the element following the view

    returns

    a non-strict view of a slice of this linked hash map, starting at index from and extending up to (but not including) index until.

    Definition Classes
    IterableLikeTraversableLike
  217. def view: IterableView[(A, B), LinkedHashMap[A, B]]

    Creates a non-strict view of this linked hash map.

    Creates a non-strict view of this linked hash map.

    returns

    a non-strict view of this linked hash map.

    Definition Classes
    IterableLikeTraversableLike
  218. final def wait(): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws()
  219. final def wait(arg0: Long, arg1: Int): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws()
  220. final def wait(arg0: Long): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws()
  221. def withDefault(d: (A) ⇒ B): Map[A, B]

    The same map with a given default function.

    The same map with a given default function.

    Invoking transformer methods (e.g. map) will not preserve the default value.

    d

    the function mapping keys to values, used for non-present keys

    returns

    a wrapper of the map with a default value

    Definition Classes
    Map
  222. def withDefaultValue(d: B): Map[A, B]

    The same map with a given default value.

    The same map with a given default value.

    Invoking transformer methods (e.g. map) will not preserve the default value.

    d

    the function mapping keys to values, used for non-present keys

    returns

    a wrapper of the map with a default value

    Definition Classes
    Map
  223. def withFilter(p: ((A, B)) ⇒ Boolean): FilterMonadic[(A, B), LinkedHashMap[A, B]]

    Creates a non-strict filter of this linked hash map.

    Creates a non-strict filter of this linked hash map.

    Note: the difference between c filter p and c withFilter p is that the former creates a new collection, whereas the latter only restricts the domain of subsequent map, flatMap, foreach, and withFilter operations.

    p

    the predicate used to test elements.

    returns

    an object of class WithFilter, which supports map, flatMap, foreach, and withFilter operations. All these operations apply to those elements of this linked hash map which satisfy the predicate p.

    Definition Classes
    TraversableLikeFilterMonadic
  224. def zip[B](that: GenIterable[B]): `LinkedHashMap`[(A, B)]

    [use case] Returns a linked hash map formed from this linked hash map and another iterable collection by combining corresponding elements in pairs.

    [use case]

    Returns a linked hash map formed from this linked hash map and another iterable collection by combining corresponding elements in pairs. If one of the two collections is longer than the other, its remaining elements are ignored.

    B

    the type of the second half of the returned pairs

    that

    The iterable providing the second half of each result pair

    returns

    a new linked hash map containing pairs consisting of corresponding elements of this linked hash map and that. The length of the returned collection is the minimum of the lengths of this linked hash map and that.

    Definition Classes
    IterableLikeGenIterableLike
    Full Signature

    def zip[A1 >: (A, B), B, That](that: GenIterable[B])(implicit bf: CanBuildFrom[LinkedHashMap[A, B], (A1, B), That]): That

  225. def zipAll[B](that: Iterable[B], thisElem: A, thatElem: B): `LinkedHashMap`[(A, B)]

    [use case] Returns a linked hash map formed from this linked hash map and another iterable collection by combining corresponding elements in pairs.

    [use case]

    Returns a linked hash map formed from this linked hash map and another iterable collection by combining corresponding elements in pairs. If one of the two collections is shorter than the other, placeholder elements are used to extend the shorter collection to the length of the longer.

    B

    the type of the second half of the returned pairs

    that

    The iterable providing the second half of each result pair

    thisElem

    the element to be used to fill up the result if this linked hash map is shorter than that.

    thatElem

    the element to be used to fill up the result if that is shorter than this linked hash map.

    returns

    a new linked hash map containing pairs consisting of corresponding elements of this linked hash map and that. The length of the returned collection is the maximum of the lengths of this linked hash map and that. If this linked hash map is shorter than that, thisElem values are used to pad the result. If that is shorter than this linked hash map, thatElem values are used to pad the result.

    Definition Classes
    IterableLikeGenIterableLike
    Full Signature

    def zipAll[B, A1 >: (A, B), That](that: GenIterable[B], thisElem: A1, thatElem: B)(implicit bf: CanBuildFrom[LinkedHashMap[A, B], (A1, B), That]): That

  226. def zipWithIndex: `LinkedHashMap`[(A, Int)]

    [use case] Zips this linked hash map with its indices.

    [use case]

    Zips this linked hash map with its indices.

    returns

    A new linked hash map containing pairs consisting of all elements of this linked hash map paired with their index. Indices start at 0. @example List("a", "b", "c").zipWithIndex = List(("a", 0), ("b", 1), ("c", 2))

    Definition Classes
    IterableLikeGenIterableLike
    Full Signature

    def zipWithIndex[A1 >: (A, B), That](implicit bf: CanBuildFrom[LinkedHashMap[A, B], (A1, Int), That]): That

  227. def [B](y: B): (LinkedHashMap[A, B], B)

    Implicit information
    This member is added by an implicit conversion from LinkedHashMap[A, B] to ArrowAssoc[LinkedHashMap[A, B]] performed by method any2ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc

Deprecated Value Members

  1. def /:\[A1 >: (A, B)](z: A1)(op: (A1, A1) ⇒ A1): A1

    A syntactic sugar for out of order folding.

    A syntactic sugar for out of order folding. See fold.

    Example:

    scala> val a = LinkedList(1,2,3,4)
    a: scala.collection.mutable.LinkedList[Int] = LinkedList(1, 2, 3, 4)
    
    scala> val b = (a /:\ 5)(_+_)
    b: Int = 15
    Definition Classes
    GenTraversableOnce
    Annotations
    @deprecated
    Deprecated

    (Since version 2.10.0) use fold instead

  2. def x: LinkedHashMap[A, B]

    Implicit information
    This member is added by an implicit conversion from LinkedHashMap[A, B] to ArrowAssoc[LinkedHashMap[A, B]] performed by method any2ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @deprecated
    Deprecated

    (Since version 2.10.0) Use leftOfArrow instead

  3. def x: LinkedHashMap[A, B]

    Implicit information
    This member is added by an implicit conversion from LinkedHashMap[A, B] to Ensuring[LinkedHashMap[A, B]] performed by method any2Ensuring in scala.Predef.
    Definition Classes
    Ensuring
    Annotations
    @deprecated
    Deprecated

    (Since version 2.10.0) Use resultOfEnsuring instead

Inherited from Serializable

Inherited from Serializable

Inherited from HashTable[A, LinkedEntry[A, B]]

Inherited from HashUtils[A]

Inherited from AbstractMap[A, B]

Inherited from Map[A, B]

Inherited from MapLike[A, B, LinkedHashMap[A, B]]

Inherited from Cloneable[LinkedHashMap[A, B]]

Inherited from Shrinkable[A]

Inherited from Builder[(A, B), LinkedHashMap[A, B]]

Inherited from Growable[(A, B)]

Inherited from Clearable

Inherited from Iterable[(A, B)]

Inherited from Traversable[(A, B)]

Inherited from Mutable

Inherited from AbstractMap[A, B]

Inherited from Map[A, B]

Inherited from MapLike[A, B, LinkedHashMap[A, B]]

Inherited from Subtractable[A, LinkedHashMap[A, B]]

Inherited from PartialFunction[A, B]

Inherited from (A) ⇒ B

Inherited from GenMap[A, B]

Inherited from GenMapLike[A, B, LinkedHashMap[A, B]]

Inherited from AbstractIterable[(A, B)]

Inherited from Iterable[(A, B)]

Inherited from IterableLike[(A, B), LinkedHashMap[A, B]]

Inherited from Equals

Inherited from GenIterable[(A, B)]

Inherited from GenIterableLike[(A, B), LinkedHashMap[A, B]]

Inherited from AbstractTraversable[(A, B)]

Inherited from Traversable[(A, B)]

Inherited from GenTraversable[(A, B)]

Inherited from GenericTraversableTemplate[(A, B), Iterable]

Inherited from TraversableLike[(A, B), LinkedHashMap[A, B]]

Inherited from GenTraversableLike[(A, B), LinkedHashMap[A, B]]

Inherited from Parallelizable[(A, B), ParMap[A, B]]

Inherited from TraversableOnce[(A, B)]

Inherited from GenTraversableOnce[(A, B)]

Inherited from FilterMonadic[(A, B), LinkedHashMap[A, B]]

Inherited from HasNewBuilder[(A, B), LinkedHashMap[A, B]]

Inherited from AnyRef

Inherited from Any

Inherited by implicit conversion traversable2ops from LinkedHashMap[A, B] to TraversableOps[(A, B)]

Inherited by implicit conversion MonadOps from LinkedHashMap[A, B] to MonadOps[(A, B)]

Inherited by implicit conversion any2stringadd from LinkedHashMap[A, B] to StringAdd

Inherited by implicit conversion any2stringfmt from LinkedHashMap[A, B] to StringFormat

Inherited by implicit conversion any2ArrowAssoc from LinkedHashMap[A, B] to ArrowAssoc[LinkedHashMap[A, B]]

Inherited by implicit conversion any2Ensuring from LinkedHashMap[A, B] to Ensuring[LinkedHashMap[A, B]]