scala.collection

SetLike

trait SetLike [A, +This <: SetLike[A, This] with Set[A]] extends IterableLike[A, This] with Addable[A, This] with Subtractable[A, This]

A template trait for sets.

A set is a collection that contains no duplicate elements.

Implementation note: This trait provides most of the operations of a Set independently of its representation. It is typically inherited by concrete implementations of sets.

To implement a concrete set, you need to provide implementations of the following methods:

      def contains(key: A): Boolean
      def iterator: Iterator[A]
      def +(elem: A): This
      def -(elem: A): This

If you wish that methods like take, drop, filter return the same kind of set, you should also override:

      def empty: This

It is also good idea to override methods foreach and size for efficiency.

A

the type of the elements of the set

This

the type of the set itself.

linear super types: Subtractable[A, This], Addable[A, This], IterableLike[A, This], TraversableLike[A, This], TraversableOnce[A], FilterMonadic[A, This], HasNewBuilder[A, This], Equals, AnyRef, Any
known subclasses: Set, DefaultKeySet, SetLike, Set, HashSet, ObservableSet, SetProxyLike, SetProxy, JSetWrapper, LinkedHashSet, ImmutableSetAdaptor, BitSetLike, BitSet, BitSet, SynchronizedSet, SortedSetLike, SortedSet, Set, SortedSet, TreeSet, HashSet, HashTrieSet, HashSet1, SetProxy, DefaultKeySortedSet, Set4, Set3, Set2, Set1, EmptySet, BitSet, BitSetN, BitSet2, BitSet1, ListSet, Node, SetProxy, ValueSet, SelectionSet, columns, rows, Indices, indices, EmptySet
self type: SetLike[A, This]
source: SetLike.scala
    version
  1. 2.8

    since
  1. 2.8

Ordering
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Inherited
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  1. SetLike
  2. Subtractable
  3. Addable
  4. IterableLike
  5. TraversableLike
  6. TraversableOnce
  7. FilterMonadic
  8. HasNewBuilder
  9. Equals
  10. AnyRef
  11. Any
Visibility
  1. Public
  2. All
Impl.
  1. Concrete
  2. Abstract

Type Members

  1. type Self = This

    The type implementing this traversable

    The type implementing this traversable

    attributes: protected
    definition classes: TraversableLike
  2. class WithFilter extends FilterMonadic[A, Repr]

    A class supporting filtered operations.

Value Members

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

    attributes: final
    definition classes: AnyRef
  2. def != (arg0: Any) : Boolean

    o != arg0 is the same as !(o == (arg0)).

    o != arg0 is the same as !(o == (arg0)).

    arg0

    the object to compare against this object for dis-equality.

    returns

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

    attributes: final
    definition classes: Any
  3. def ## () : Int

    attributes: final
    definition classes: AnyRef → Any
  4. def $asInstanceOf [T0] () : T0

    attributes: final
    definition classes: AnyRef
  5. def $isInstanceOf [T0] () : Boolean

    attributes: final
    definition classes: AnyRef
  6. def & (that: Set[A]) : This

    Computes the intersection between this set and another set.

    Computes the intersection between this set and another set.

    Note: Same as intersect.

    that

    the set to intersect with.

    returns

    a new set consisting of all elements that are both in this set and in the given set that.

  7. def &~ (that: Set[A]) : This

    The difference of this set and another set.

    The difference of this set and another set.

    Note: Same as diff.

    that

    the set of elements to exclude.

    returns

    a set containing those elements of this set that are not also contained in the given set that.

  8. def ** (that: Set[A]) : This

    This method is an alias for intersect.

    This method is an alias for intersect. It computes an intersection with set that. It removes all the elements that are not present in that.

    that

    the set to intersect with

      deprecated:
    1. use & instead

  9. def + (elem1: A, elem2: A, elems: A*) : This

    Creates a new set with additional elements.

    Creates a new set with additional elements.

    This method takes two or more elements to be added. Another overloaded variant of this method handles the case where a single element is added.

    elem1

    the first element to add.

    elem2

    the second element to add.

    elems

    the remaining elements to add.

    returns

    a new set with the given elements added.

    definition classes: Addable
  10. def + (elem: A) : This

    Creates a new set with an additional element, unless the element is already present.

    Creates a new set with an additional element, unless the element is already present.

    elem

    the element to be added

    returns

    a new set that contains all elements of this set and that also contains elem.

    attributes: abstract
    definition classes: SetLikeAddable
  11. def ++ (xs: TraversableOnce[A]) : This

    Creates a new set by adding all elements contained in another collection to this set.

    Creates a new set by adding all elements contained in another collection to this set.

    returns

    a new set with the given elements added.

    definition classes: Addable
  12. def ++ (that: TraversableOnce[A]) : Set[A]

    [use case] Concatenates this set with the elements of a traversable collection.

    [use case]

    Concatenates this set with the elements of a traversable collection.

    that

    the traversable to append.

    returns

    a new set which contains all elements of this set followed by all elements of that.

    attributes: abstract
    definition classes: TraversableLike
  13. def ++ [B >: A, That] (that: TraversableOnce[B])(implicit bf: CanBuildFrom[This, B, That]) : That

    Concatenates this set with the elements of a traversable collection.

    Concatenates this set with the elements of a traversable collection.

    B

    the element type of the returned collection.

    That

    the class of the returned collection. Where possible, That is the same class as the current collection class Repr, but this depends on the element type B being admissible for that class, which means that an implicit instance of type CanBuildFrom[Repr, B, That] is found.

    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 and the new element type B.

    returns

    a new collection of type That which contains all elements of this set followed by all elements of that.

    definition classes: TraversableLike
  14. def - (elem1: A, elem2: A, elems: A*) : This

    Creates a new set from this set with some elements removed.

    Creates a new set from this set with some elements removed.

    This method takes two or more elements to be removed. Another overloaded variant of this method handles the case where a single element is removed.

    elem1

    the first element to remove.

    elem2

    the second element to remove.

    elems

    the remaining elements to remove.

    returns

    a new set that contains all elements of the current set except one less occurrence of each of the given elements.

    definition classes: Subtractable
  15. def - (elem: A) : This

    Creates a new set with a given element removed from this set.

    Creates a new set with a given element removed from this set.

    elem

    the element to be removed

    returns

    a new set that contains all elements of this set but that does not contain elem.

    attributes: abstract
    definition classes: SetLikeSubtractable
  16. def -- (xs: TraversableOnce[A]) : This

    Creates a new set from this set by removing all elements of another collection.

    Creates a new set from this set by removing all elements of another collection.

    returns

    a new set that contains all elements of the current set except one less occurrence of each of the elements of elems.

    definition classes: Subtractable
  17. def /: [B] (z: B)(op: (B, A) ⇒ B) : B

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

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

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

    Note: might return different results for different runs, unless the underlying collection type is ordered. or the operator is associative and commutative.

    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 set, going left to right with the start value z on the left: op(...op(op(z, x1), x2), ..., xn) where x,,1,,, ..., x,,n,, are the elements of this set.

    definition classes: TraversableOnce
  18. def :\ [B] (z: B)(op: (A, B) ⇒ B) : B

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

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

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

    Note: might return different results for different runs, unless the underlying collection type is ordered. or the operator is associative and commutative.

    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 set, going right to left with the start value z on the right: op(x1, op(x2, ... op(xn, z)...)) where x,,1,,, ..., x,,n,, are the elements of this set.

    definition classes: TraversableOnce
  19. def == (arg0: AnyRef) : Boolean

    o == arg0 is the same as if (o eq null) arg0 eq null else o.equals(arg0).

    o == arg0 is the same as if (o eq null) arg0 eq null else o.equals(arg0).

    arg0

    the object to compare against this object for equality.

    returns

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

    attributes: final
    definition classes: AnyRef
  20. def == (arg0: Any) : Boolean

    o == arg0 is the same as o.equals(arg0).

    o == arg0 is the same as o.equals(arg0).

    arg0

    the object to compare against this object for equality.

    returns

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

    attributes: final
    definition classes: Any
  21. def addString (b: StringBuilder) : StringBuilder

    Appends all elements of this set to a string builder.

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

    b

    the string builder to which elements are appended.

    returns

    the string builder b to which elements were appended.

    definition classes: TraversableOnce
  22. def addString (b: StringBuilder, sep: String) : StringBuilder

    Appends all elements of this set to a string builder using a separator string.

    Appends all elements of this set 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 set, separated by the string sep.

    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
  23. def addString (b: StringBuilder, start: String, sep: String, end: String) : StringBuilder

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

    Appends all elements of this set 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 (w.r.t. the method toString) of all elements of this set are separated by the string sep.

    b

    the string builder to which elements 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: TraversableOnce
  24. def apply (elem: A) : Boolean

    Tests if some element is contained in this set.

    Tests if some element is contained in this set.

    This method is equivalent to contains. It allows sets to be interpreted as predicates.

    elem

    the element to test for membership.

    returns

    true if elem is contained in this set, false otherwise.

  25. def asInstanceOf [T0] : T0

    This method is used to cast the receiver object to be of type T0.

    This method is used to 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 expression1.asInstanceOf[String] will throw a ClassCastException at runtime, while the expressionList(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 typed.

    returns

    the receiver object.

    attributes: final
    definition classes: Any
  26. 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 set should be compared

    returns

    true, if this set 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
  27. def clone () : AnyRef

    This method creates and returns a copy of the receiver object.

    This method creates and returns a copy of the receiver object.

    The default implementation of the clone method is platform dependent.

    returns

    a copy of the receiver object.

    attributes: protected
    definition classes: AnyRef
  28. def collect [B] (pf: PartialFunction[A, B]) : Set[B]

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

    [use case]

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

    B

    the element type of the returned collection.

    pf

    the partial function which filters and maps the set.

    returns

    a new set 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.

    attributes: abstract
    definition classes: TraversableLike
  29. def collect [B, That] (pf: PartialFunction[A, B])(implicit bf: CanBuildFrom[This, B, That]) : That

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

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

    B

    the element type of the returned collection.

    That

    the class of the returned collection. Where possible, That is the same class as the current collection class Repr, but this depends on the element type B being admissible for that class, which means that an implicit instance of type CanBuildFrom[Repr, B, That] is found.

    pf

    the partial function which filters and maps the set.

    bf

    an implicit value of class CanBuildFrom which determines the result class That from the current representation type Repr and and the new element type B.

    returns

    a new collection of type That resulting from applying the partial function pf to each element on which it is defined and collecting the results. The order of the elements is preserved.

    definition classes: TraversableLike
  30. def contains (elem: A) : Boolean

    Tests if some element is contained in this set.

    Tests if some element is contained in this set.

    elem

    the element to test for membership.

    returns

    true if elem is contained in this set, false otherwise.

    attributes: abstract
  31. def copyToArray (xs: Array[A], start: Int, len: Int) : Unit

    [use case] Copies elements of this set to an array.

    [use case]

    Copies elements of this set to an array. Fills the given array xs with at most len elements of this set, starting at position start. Copying will stop once either the end of the current set 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.

    attributes: abstract
    definition classes: TraversableLike
  32. def copyToArray [B >: A] (xs: Array[B], start: Int, len: Int) : Unit

    Copies elements of this set to an array.

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

    B

    the type of the elements of the array.

    xs

    the array to fill.

    start

    the starting index.

    len

    the maximal number of elements to copy.

    definition classes: IterableLikeTraversableLikeTraversableOnce
  33. def copyToArray (xs: Array[A]) : Unit

    [use case] Copies values of this set to an array.

    [use case]

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

    xs

    the array to fill.

    attributes: abstract
    definition classes: TraversableOnce
  34. def copyToArray [B >: A] (xs: Array[B]) : Unit

    Copies values of this set to an array.

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

    B

    the type of the elements of the array.

    xs

    the array to fill.

    definition classes: TraversableOnce
  35. def copyToArray (xs: Array[A], start: Int) : Unit

    [use case] Copies values of this set to an array.

    [use case]

    Copies values of this set to an array. Fills the given array xs with values of this set, after skipping start values. Copying will stop once either the end of the current set is reached, or the end of the array is reached.

    xs

    the array to fill.

    start

    the starting index.

    attributes: abstract
    definition classes: TraversableOnce
  36. def copyToArray [B >: A] (xs: Array[B], start: Int) : Unit

    Copies values of this set to an array.

    Copies values of this set to an array. Fills the given array xs with values of this set, after skipping start values. Copying will stop once either the end of the current set is reached, or the end of the array is reached.

    B

    the type of the elements of the array.

    xs

    the array to fill.

    start

    the starting index.

    definition classes: TraversableOnce
  37. def copyToBuffer [B >: A] (dest: Buffer[B]) : Unit

    Copies all elements of this set to a buffer.

    Copies all elements of this set to a buffer.

    dest

    The buffer to which elements are copied.

    definition classes: TraversableOnce
  38. def count (p: (A) ⇒ Boolean) : Int

    Counts the number of elements in the set which satisfy a predicate.

    Counts the number of elements in the set which satisfy a predicate.

    p

    the predicate used to test elements.

    returns

    the number of elements satisfying the predicate p.

    definition classes: TraversableOnce
  39. def diff (that: Set[A]) : This

    Computes the difference of this set and another set.

    Computes the difference of this set and another set.

    that

    the set of elements to exclude.

    returns

    a set containing those elements of this set that are not also contained in the given set that.

  40. def drop (n: Int) : This

    Selects all elements except first n ones.

    Selects all elements except first n ones.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    n

    the number of elements to drop from this set.

    returns

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

    definition classes: TraversableLike
  41. def dropRight (n: Int) : This

    Selects all elements except last n ones.

    Selects all elements except last n ones.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    n

    The number of elements to take

    returns

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

    definition classes: IterableLike
  42. def dropWhile (p: (A) ⇒ Boolean) : This

    Drops longest prefix of elements that satisfy a predicate.

    Drops longest prefix of elements that satisfy a predicate.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    p

    The predicate used to test elements.

    returns

    the longest suffix of this set whose first element does not satisfy the predicate p.

    definition classes: TraversableLike
  43. def elements : Iterator[A]

    definition classes: IterableLike
      deprecated:
    1. use iterator' instead

  44. def empty : This

    The empty set of the same type as this set

    The empty set of the same type as this set

    returns

    an empty set of type This.

    attributes: abstract
  45. def eq (arg0: AnyRef) : Boolean

    This method is used to test whether the argument (arg0) is a reference to the receiver object (this).

    This method is used to test whether the argument (arg0) is a reference to the receiver object (this).

    The eq method implements an [http://en.wikipedia.org/wiki/Equivalence_relation equivalence relation] on non-null instances of AnyRef: * It is reflexive: for any non-null instance x of type AnyRef, x.eq(x) returns true. * It is symmetric: for any non-null instances x and y of type AnyRef, x.eq(y) returns true if and only if y.eq(x) returns true. * It is transitive: for any non-null instances x, y, and z of type AnyRef if x.eq(y) returns true and y.eq(z) returns true, then x.eq(z) returns true.

    Additionally, the eq method has three other 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).

    arg0

    the object to compare against this object for reference equality.

    returns

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

    attributes: final
    definition classes: AnyRef
  46. def equals (that: Any) : Boolean

    Compares this set with another object for equality.

    Compares this set with another object for equality.

    Note: This operation contains an unchecked cast: if that is a set, it will assume with an unchecked cast that it has the same element type as this set. Any subsequent ClassCastException is treated as a false result.

    that

    the other object

    returns

    true if that is a set which contains the same elements as this set.

    definition classes: SetLikeEquals → AnyRef → Any
  47. def exists (p: (A) ⇒ Boolean) : Boolean

    Tests whether a predicate holds for some of the elements of this set.

    Tests whether a predicate holds for some of the elements of this set.

    p

    the predicate used to test elements.

    returns

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

    definition classes: IterableLikeTraversableLikeTraversableOnce
  48. def filter (p: (A) ⇒ Boolean) : This

    Selects all elements of this set which satisfy a predicate.

    Selects all elements of this set which satisfy a predicate.

    p

    the predicate used to test elements.

    returns

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

    definition classes: TraversableLike
  49. def filterNot (p: (A) ⇒ Boolean) : This

    Selects all elements of this set which do not satisfy a predicate.

    Selects all elements of this set which do not satisfy a predicate.

    p

    the predicate used to test elements.

    returns

    a new set consisting of all elements of this set that do not satisfy the given predicate p. The order of the elements is preserved.

    definition classes: TraversableLike
  50. def finalize () : Unit

    This method is called by the garbage collector on the receiver object when garbage collection determines that there are no more references to the object.

    This method is called by the garbage collector on the receiver object when garbage collection determines that there are no more references to the object.

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

    attributes: protected
    definition classes: AnyRef
  51. def find (p: (A) ⇒ Boolean) : Option[A]

    Finds the first element of the set satisfying a predicate, if any.

    Finds the first element of the set satisfying a predicate, if any.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    p

    the predicate used to test elements.

    returns

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

    definition classes: IterableLikeTraversableLikeTraversableOnce
  52. def first : A

    definition classes: IterableLike
      deprecated:
    1. use head' instead

  53. def firstOption : Option[A]

    None if iterable is empty.

    None if iterable is empty.

    definition classes: IterableLike
      deprecated:
    1. use headOption' instead

  54. def flatMap [B] (f: (A) ⇒ Traversable[B]) : Set[B]

    [use case] Builds a new collection by applying a function to all elements of this set and concatenating the results.

    [use case]

    Builds a new collection by applying a function to all elements of this set and concatenating the results.

    B

    the element type of the returned collection.

    f

    the function to apply to each element.

    returns

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

    attributes: abstract
    definition classes: TraversableLike
  55. def flatMap [B, That] (f: (A) ⇒ Traversable[B])(implicit bf: CanBuildFrom[This, B, That]) : That

    Builds a new collection by applying a function to all elements of this set and concatenating the results.

    Builds a new collection by applying a function to all elements of this set and concatenating the results.

    B

    the element type of the returned collection.

    That

    the class of the returned collection. Where possible, That is the same class as the current collection class Repr, but this depends on the element type B being admissible for that class, which means that an implicit instance of type CanBuildFrom[Repr, B, That] is found.

    f

    the function to apply to each element.

    bf

    an implicit value of class CanBuildFrom which determines the result class That from the current representation type Repr and and the new element type B.

    returns

    a new collection of type That resulting from applying the given collection-valued function f to each element of this set and concatenating the results.

    definition classes: TraversableLikeFilterMonadic
  56. def foldLeft [B] (z: B)(op: (B, A) ⇒ B) : B

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

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

    Note: might return different results for different runs, unless the underlying collection type is ordered. or the operator is associative and commutative.

    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 set, going left to right with the start value z on the left: op(...op(z, x1), x2, ..., xn) where x,,1,,, ..., x,,n,, are the elements of this set.

    definition classes: TraversableOnce
  57. def foldRight [B] (z: B)(op: (A, B) ⇒ B) : B

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

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

    Note: might return different results for different runs, unless the underlying collection type is ordered. or the operator is associative and commutative.

    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 set, going right to left with the start value z on the right: op(x1, op(x2, ... op(xn, z)...)) where x,,1,,, ..., x,,n,, are the elements of this set.

    definition classes: IterableLikeTraversableOnce
  58. def forall (p: (A) ⇒ Boolean) : Boolean

    Tests whether a predicate holds for all elements of this set.

    Tests whether a predicate holds for all elements of this set.

    p

    the predicate used to test elements.

    returns

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

    definition classes: IterableLikeTraversableLikeTraversableOnce
  59. def foreach (f: (A) ⇒ Unit) : Unit

    [use case] Applies a function f to all elements of this set.

    [use case]

    Applies a function f to all elements of this set.

    f

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

    attributes: abstract
    definition classes: IterableLike
  60. def foreach [U] (f: (A) ⇒ U) : Unit

    Applies a function f to all elements of this set.

    Applies a function f to all elements of this set.

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

    U

    the type parameter describing the result of function f. This result will always be ignored. Typically U is Unit, but this is not necessary.

    f

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

    definition classes: IterableLikeTraversableLikeTraversableOnceFilterMonadic
  61. def getClass () : java.lang.Class[_ <: java.lang.Object]

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

    Returns 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.

    attributes: final
    definition classes: AnyRef
  62. def groupBy [K] (f: (A) ⇒ K) : Map[K, This]

    Partitions this set into a map of sets according to some discriminator function.

    Partitions this set into a map of sets 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 set.

    K

    the type of keys returned by the discriminator function.

    f

    the discriminator function.

    returns

    A map from keys to sets 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 set of those elements x for which f(x) equals k.

    definition classes: TraversableLike
  63. def grouped (size: Int) : Iterator[This]

    Partitions elements in fixed size sets.

    Partitions elements in fixed size sets.

    size

    the number of elements per group

    returns

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

    definition classes: IterableLike
      see also:
    1. Iterator#grouped

  64. def hasDefiniteSize : Boolean

    Tests whether this set is known to have a finite size.

    Tests whether this set 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: TraversableLikeTraversableOnce
  65. def hashCode () : Int

    Returns a hash code value for the object.

    Returns a hash code value for the object.

    The default hashing algorithm is platform dependent.

    Note that it is allowed for two objects to have identical hash codes (o1.hashCode.equals(o2.hashCode)) yet not be equal (o1.equals(o2) returns false). A degenerate implementation could always return 0. However, it is required that if two objects are equal (o1.equals(o2) returns true) that they have identical hash codes (o1.hashCode.equals(o2.hashCode)). Therefore, when overriding this method, be sure to verify that the behavior is consistent with the equals method.

    returns

    the hash code value for the object.

    definition classes: SetLike → AnyRef → Any
  66. def head : A

    Selects the first element of this set.

    Selects the first element of this set.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    returns

    the first element of this set.

    definition classes: IterableLikeTraversableLike
  67. def headOption : Option[A]

    Optionally selects the first element.

    Optionally selects the first element.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    returns

    the first element of this set if it is nonempty, None if it is empty.

    definition classes: TraversableLike
  68. def init : This

    Selects all elements except the last.

    Selects all elements except the last.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    returns

    a set consisting of all elements of this set except the last one.

    definition classes: TraversableLike
  69. def intersect (that: Set[A]) : This

    Computes the intersection between this set and another set.

    Computes the intersection between this set and another set.

    that

    the set to intersect with.

    returns

    a new set consisting of all elements that are both in this set and in the given set that.

  70. def isEmpty : Boolean

    Tests if this set is empty.

    Tests if this set is empty.

    returns

    true if there is no element in the set, false otherwise.

    definition classes: SetLikeIterableLikeTraversableLikeTraversableOnce
  71. def isInstanceOf [T0] : Boolean

    This method is used to test whether the dynamic type of the receiver object is T0.

    This method is used to test whether the dynamic type of the receiver object is T0.

    Note that the test result of the test is modulo Scala's erasure semantics. Therefore the expression1.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 requested typed.

    returns

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

    attributes: final
    definition classes: Any
  72. def isTraversableAgain : Boolean

    Tests whether this set can be repeatedly traversed.

    Tests whether this set can be repeatedly traversed.

    returns

    true

    attributes: final
    definition classes: TraversableLikeTraversableOnce
  73. def iterator : Iterator[A]

    Creates a new iterator over all elements contained in this iterable object.

    Creates a new iterator over all elements contained in this iterable object.

    returns

    the new iterator

    attributes: abstract
    definition classes: IterableLike
  74. def last : A

    Selects the last element.

    Selects the last element.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    returns

    The last element of this set.

    definition classes: TraversableLike
  75. def lastOption : Option[A]

    Optionally selects the last element.

    Optionally selects the last element.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    returns

    the last element of this set$ if it is nonempty, None if it is empty.

    definition classes: TraversableLike
  76. def map [B] (f: (A) ⇒ B) : Set[B]

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

    [use case]

    Builds a new collection by applying a function to all elements of this set.

    B

    the element type of the returned collection.

    f

    the function to apply to each element.

    returns

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

    attributes: abstract
    definition classes: TraversableLike
  77. def map [B, That] (f: (A) ⇒ B)(implicit bf: CanBuildFrom[This, B, That]) : That

    Builds a new collection by applying a function to all elements of this set.

    Builds a new collection by applying a function to all elements of this set.

    B

    the element type of the returned collection.

    That

    the class of the returned collection. Where possible, That is the same class as the current collection class Repr, but this depends on the element type B being admissible for that class, which means that an implicit instance of type CanBuildFrom[Repr, B, That] is found.

    f

    the function to apply to each element.

    bf

    an implicit value of class CanBuildFrom which determines the result class That from the current representation type Repr and and the new element type B.

    returns

    a new collection of type That resulting from applying the given function f to each element of this set and collecting the results.

    definition classes: TraversableLikeFilterMonadic
  78. def max : A

    [use case] Finds the largest element.

    [use case]

    Finds the largest element.

    returns

    the largest element of this set.

    attributes: abstract
    definition classes: TraversableOnce
  79. def max [B >: A] (implicit cmp: Ordering[B]) : A

    Finds the largest element.

    Finds the largest element.

    B

    The type over which the ordering is defined.

    cmp

    An ordering to be used for comparing elements.

    returns

    the largest element of this set with respect to the ordering cmp.

    definition classes: TraversableOnce
  80. def min : A

    [use case] Finds the smallest element.

    [use case]

    Finds the smallest element.

    returns

    the smallest element of this set

    attributes: abstract
    definition classes: TraversableOnce
  81. def min [B >: A] (implicit cmp: Ordering[B]) : A

    Finds the smallest element.

    Finds the smallest element.

    B

    The type over which the ordering is defined.

    cmp

    An ordering to be used for comparing elements.

    returns

    the smallest element of this set with respect to the ordering cmp.

    definition classes: TraversableOnce
  82. def mkString : String

    Displays all elements of this set in a string.

    Displays all elements of this set in a string.

    returns

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

    definition classes: TraversableOnce
  83. def mkString (sep: String) : String

    Displays all elements of this set in a string using a separator string.

    Displays all elements of this set in a string using a separator string.

    sep

    the separator string.

    returns

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

    definition classes: TraversableOnce
  84. def mkString (start: String, sep: String, end: String) : String

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

    Displays all elements of this set 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 set. 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 set are separated by the string sep.

    definition classes: TraversableOnce
  85. def ne (arg0: AnyRef) : Boolean

    o.ne(arg0) is the same as !(o.eq(arg0)).

    o.ne(arg0) is the same as !(o.eq(arg0)).

    arg0

    the object to compare against this object for reference dis-equality.

    returns

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

    attributes: final
    definition classes: AnyRef
  86. def newBuilder : Builder[A, This]

    A common implementation of newBuilder for all sets in terms of empty.

    A common implementation of newBuilder for all sets in terms of empty. Overridden for mutable sets in mutable.SetLike.

    attributes: protected[this]
    definition classes: SetLikeTraversableLikeHasNewBuilder
  87. def nonEmpty : Boolean

    Tests whether the set is not empty.

    Tests whether the set is not empty.

    returns

    true if the set contains at least one element, false otherwise.

    definition classes: TraversableOnce
  88. 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.

    attributes: final
    definition classes: AnyRef
  89. 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.

    attributes: final
    definition classes: AnyRef
  90. def partition (p: (A) ⇒ Boolean) : (This, This)

    Partitions this set in two sets according to a predicate.

    Partitions this set in two sets according to a predicate.

    p

    the predicate on which to partition.

    returns

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

    definition classes: TraversableLike
  91. 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 set 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 set and as result type of product. Examples of such types are: Long, Float, Double, BigInt.

    attributes: abstract
    definition classes: TraversableOnce
  92. def product [B >: A] (implicit num: Numeric[B]) : B

    Multiplies up the elements of this collection.

    Multiplies up the elements of this collection.

    B

    the result type of the * operator.

    num

    an implicit parameter defining a set of numeric operations which includes the * operator to be used in forming the product.

    returns

    the product of all elements of this set with respect to the * operator in num.

    definition classes: TraversableOnce
  93. def projection : IterableView[A, This]

    returns a projection that can be used to call non-strict filter,map, and flatMap methods that build projections of the collection.

    returns a projection that can be used to call non-strict filter,map, and flatMap methods that build projections of the collection.

    definition classes: IterableLike
      deprecated:
    1. use view' instead

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

    Applies a binary operator to all elements of this set, going left to right.

    Applies a binary operator to all elements of this set, going left to right.

    Note: might return different results for different runs, unless the underlying collection type is ordered. or the operator is associative and commutative.

    B

    the result type of the binary operator.

    op

    the binary operator.

    returns

    the result of inserting op between consecutive elements of this set, going left to right: op(...(op(x1, x2), ... ) , xn) where x,,1,,, ..., x,,n,, are the elements of this set.

    definition classes: TraversableOnce
  95. def reduceLeftOption [B >: A] (op: (B, A) ⇒ B) : Option[B]

    Optionally applies a binary operator to all elements of this set, going left to right.

    Optionally applies a binary operator to all elements of this set, going left to right.

    Note: might return different results for different runs, unless the underlying collection type is ordered. or the operator is associative and commutative.

    B

    the result type of the binary operator.

    op

    the binary operator.

    returns

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

    definition classes: TraversableOnce
  96. def reduceRight [B >: A] (op: (A, B) ⇒ B) : B

    Applies a binary operator to all elements of this set, going right to left.

    Applies a binary operator to all elements of this set, going right to left.

    Note: might return different results for different runs, unless the underlying collection type is ordered. or the operator is associative and commutative.

    B

    the result type of the binary operator.

    op

    the binary operator.

    returns

    the result of inserting op between consecutive elements of this set, going right to left: op(x1, op(x2, ..., op(xn-1, xn)...)) where x,,1,,, ..., x,,n,, are the elements of this set.

    definition classes: IterableLikeTraversableOnce
  97. def reduceRightOption [B >: A] (op: (A, B) ⇒ B) : Option[B]

    Optionally applies a binary operator to all elements of this set, going right to left.

    Optionally applies a binary operator to all elements of this set, going right to left.

    Note: might return different results for different runs, unless the underlying collection type is ordered. or the operator is associative and commutative.

    B

    the result type of the binary operator.

    op

    the binary operator.

    returns

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

    definition classes: TraversableOnce
  98. def repr : This

    The collection of type set underlying this TraversableLike object.

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

    definition classes: TraversableLike
  99. def reversed : List[A]

    attributes: protected[this]
    definition classes: TraversableOnce
  100. def sameElements (that: Iterable[A]) : Boolean

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

    [use case]

    Checks if the other iterable collection contains the same elements in the same order as this set.

    that

    the collection to compare with.

    returns

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

    attributes: abstract
    definition classes: IterableLike
  101. def sameElements [B >: A] (that: Iterable[B]) : Boolean

    Checks if the other iterable collection contains the same elements in the same order as this set.

    Checks if the other iterable collection contains the same elements in the same order as this set.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    B

    the type of the elements of collection that.

    that

    the collection to compare with.

    returns

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

    definition classes: IterableLike
  102. def scanLeft [B, That] (z: B)(op: (B, A) ⇒ B)(implicit bf: CanBuildFrom[This, B, That]) : That

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

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

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    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 and the new element type B.

    returns

    collection with intermediate results

    definition classes: TraversableLike
  103. def scanRight [B, That] (z: B)(op: (A, B) ⇒ B)(implicit bf: CanBuildFrom[This, B, That]) : That

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

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

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    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 and the new element type B.

    returns

    collection with intermediate results

    definition classes: TraversableLike
  104. def size : Int

    The size of this set.

    The size of this set.

    returns

    the number of elements in this set.

    definition classes: TraversableOnce
  105. def slice (from: Int, until: Int) : This

    Selects an interval of elements.

    Selects an interval of elements.

    Note: c.slice(from, to) is equivalent to (but possibly more efficient than) c.drop(from).take(to - from)

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    from

    the index of the first returned element in this set.

    until

    the index one past the last returned element in this set.

    returns

    a set containing the elements starting at index from and extending up to (but not including) index until of this set.

    definition classes: IterableLikeTraversableLike
  106. def sliding [B >: A] (size: Int, step: Int) : Iterator[This]

    definition classes: IterableLike
  107. def sliding [B >: A] (size: Int) : Iterator[This]

    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 sets 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:
    1. Iterator#sliding

  108. def span (p: (A) ⇒ Boolean) : (This, This)

    Splits this set into a prefix/suffix pair according to a predicate.

    Splits this set 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.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    p

    the test predicate

    returns

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

    definition classes: TraversableLike
  109. def splitAt (n: Int) : (This, This)

    Splits this set into two at a given position.

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

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    n

    the position at which to split.

    returns

    a pair of sets consisting of the first n elements of this set, and the other elements.

    definition classes: TraversableLike
  110. 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 set. Unless overridden this is simply "Set".

    definition classes: SetLikeTraversableLike
  111. def subsetOf (that: Set[A]) : Boolean

    Tests whether this set is a subset of another set.

    Tests whether this set is a subset of another set.

    that

    the set to test.

    returns

    true if this set is a subset of that, i.e. if every element of this set is also an element of that.

  112. 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 set 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 set and as result type of sum. Examples of such types are: Long, Float, Double, BigInt.

    attributes: abstract
    definition classes: TraversableOnce
  113. def sum [B >: A] (implicit num: Numeric[B]) : B

    Sums up the elements of this collection.

    Sums up the elements of this collection.

    B

    the result type of the + operator.

    num

    an implicit parameter defining a set of numeric operations which includes the + operator to be used in forming the sum.

    returns

    the sum of all elements of this set with respect to the + operator in num.

    definition classes: TraversableOnce
  114. def synchronized [T0] (arg0: T0) : T0

    attributes: final
    definition classes: AnyRef
  115. def tail : This

    Selects all elements except the first.

    Selects all elements except the first.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    returns

    a set consisting of all elements of this set except the first one.

    definition classes: TraversableLike
  116. def take (n: Int) : This

    Selects first n elements.

    Selects first n elements.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    n

    Tt number of elements to take from this set.

    returns

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

    definition classes: IterableLikeTraversableLike
  117. def takeRight (n: Int) : This

    Selects last n elements.

    Selects last n elements.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    n

    the number of elements to take

    returns

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

    definition classes: IterableLike
  118. def takeWhile (p: (A) ⇒ Boolean) : This

    Takes longest prefix of elements that satisfy a predicate.

    Takes longest prefix of elements that satisfy a predicate.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    p

    The predicate used to test elements.

    returns

    the longest prefix of this set whose elements all satisfy the predicate p.

    definition classes: IterableLikeTraversableLike
  119. def thisCollection : Iterable[A]

    The underlying collection seen as an instance of Set.

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

    attributes: protected[this]
    definition classes: IterableLikeTraversableLike
  120. def toArray : Array[A]

    [use case] Converts this set to an array.

    [use case]

    Converts this set to an array.

    returns

    an array containing all elements of this set. A ClassManifest must be available for the element type of this set.

    attributes: abstract
    definition classes: TraversableOnce
  121. def toArray [B >: A] (implicit arg0: ClassManifest[B]) : Array[B]

    Converts this set to an array.

    Converts this set to an array.

    B

    the type of the elements of the array. A ClassManifest for this type must be available.

    returns

    an array containing all elements of this set.

    definition classes: TraversableOnce
  122. def toBuffer [B >: A] : Buffer[B]

    Converts this set to a mutable buffer.

    Converts this set to a mutable buffer.

    returns

    a buffer containing all elements of this set.

    definition classes: TraversableOnce
  123. def toCollection (repr: This) : Iterable[A]

    A conversion from collections of type Repr to Set objects.

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

    attributes: protected[this]
    definition classes: IterableLikeTraversableLike
  124. def toIndexedSeq [B >: A] : IndexedSeq[B]

    Converts this set to an indexed sequence.

    Converts this set to an indexed sequence.

    returns

    an indexed sequence containing all elements of this set.

    definition classes: TraversableOnce
  125. def toIterable : Iterable[A]

    Converts this set to an iterable collection.

    Converts this set 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 set.

    definition classes: IterableLikeTraversableOnce
  126. def toIterator : Iterator[A]

    Returns an Iterator over the elements in this set.

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

    returns

    an Iterator containing all elements of this set.

    definition classes: TraversableLikeTraversableOnce
  127. def toList : List[A]

    Converts this set to a list.

    Converts this set to a list.

    returns

    a list containing all elements of this set.

    definition classes: TraversableOnce
  128. def toMap [T, U] (implicit ev: <:<[A, (T, U)]) : Map[T, U]

    Converts this set to a map.

    Converts this set to a map. This method is unavailable unless the elements are members of Tuple2, each ((K, V)) 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 containing all elements of this set.

    definition classes: TraversableOnce
  129. def toSeq : Seq[A]

    Converts this set to a sequence.

    Converts this set to a sequence.

    returns

    a sequence containing all the elements of this set.

    definition classes: IterableLikeTraversableOnce
  130. def toSet [B >: A] : Set[B]

    Converts this set to a set.

    Converts this set to a set.

    returns

    a set containing all elements of this set.

    definition classes: TraversableOnce
  131. def toStream : Stream[A]

    Converts this set to a stream.

    Converts this set to a stream.

    returns

    a stream containing all elements of this set.

    definition classes: IterableLikeTraversableLikeTraversableOnce
  132. def toString () : String

    Converts this set to a string.

    Converts this set to a string.

    returns

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

    definition classes: SetLikeTraversableLike → AnyRef → Any
  133. def toTraversable : Traversable[A]

    Converts this set to an unspecified Traversable.

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

    returns

    a Traversable containing all elements of this set.

    definition classes: TraversableLikeTraversableOnce
  134. def union (that: Set[A]) : This

    Computes the union between of set and another set.

    Computes the union between of set and another set.

    that

    the set to form the union with.

    returns

    a new set consisting of all elements that are in this set or in the given set that.

  135. def view (from: Int, until: Int) : IterableView[A, This]

    Creates a non-strict view of a slice of this set.

    Creates a non-strict view of a slice of this set.

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

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

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    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 set, starting at index from and extending up to (but not including) index until.

    definition classes: IterableLikeTraversableLike
  136. def view : IterableView[A, This]

    Creates a non-strict view of this set.

    Creates a non-strict view of this set.

    returns

    a non-strict view of this set.

    definition classes: IterableLikeTraversableLike
  137. def wait () : Unit

    attributes: final
    definition classes: AnyRef
  138. def wait (arg0: Long, arg1: Int) : Unit

    attributes: final
    definition classes: AnyRef
  139. def wait (arg0: Long) : Unit

    attributes: final
    definition classes: AnyRef
  140. def withFilter (p: (A) ⇒ Boolean) : FilterMonadic[A, This]

    Creates a non-strict filter of this set.

    Creates a non-strict filter of this set.

    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.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    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 set which satisfy the predicate p.

    definition classes: TraversableLikeFilterMonadic
  141. def zip [B] (that: Iterable[B]) : Set[(A, B)]

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

    [use case]

    Returns a set formed from this set 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 set containing pairs consisting of corresponding elements of this set and that. The length of the returned collection is the minimum of the lengths of this set and that.

    attributes: abstract
    definition classes: IterableLike
  142. def zip [A1 >: A, B, That] (that: Iterable[B])(implicit bf: CanBuildFrom[This, (A1, B), That]) : That

    Returns a set formed from this set and another iterable collection by combining corresponding elements in pairs.

    Returns a set formed from this set 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.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    A1

    the type of the first half of the returned pairs (this is always a supertype of the collection's element type A).

    B

    the type of the second half of the returned pairs

    That

    the class of the returned collection. Where possible, That is the same class as the current collection class Repr, but this depends on the element type (A1, B) being admissible for that class, which means that an implicit instance of type CanBuildFrom[Repr, (A1, B), That]. is found.

    that

    The iterable providing the second half of each result pair

    bf

    an implicit value of class CanBuildFrom which determines the result class That from the current representation type Repr and the new element type (A1, B).

    returns

    a new collection of type That containing pairs consisting of corresponding elements of this set and that. The length of the returned collection is the minimum of the lengths of this set and that.

    definition classes: IterableLike
  143. def zipAll [B] (that: Iterable[B], thisElem: A, thatElem: B) : Set[(A, B)]

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

    [use case]

    Returns a set formed from this set 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 set is shorter than that.

    thatElem

    the element to be used to fill up the result if that is shorter than this set.

    returns

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

    attributes: abstract
    definition classes: IterableLike
  144. def zipAll [B, A1 >: A, That] (that: Iterable[B], thisElem: A1, thatElem: B)(implicit bf: CanBuildFrom[This, (A1, B), That]) : That

    Returns a set formed from this set and another iterable collection by combining corresponding elements in pairs.

    Returns a set formed from this set 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.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    that

    the iterable providing the second half of each result pair

    thisElem

    the element to be used to fill up the result if this set is shorter than that.

    thatElem

    the element to be used to fill up the result if that is shorter than this set.

    returns

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

    definition classes: IterableLike
  145. def zipWithIndex : Set[(A, Int)]

    [use case] Zips this set with its indices.

    [use case]

    Zips this set with its indices.

    returns

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

    attributes: abstract
    definition classes: IterableLike
  146. def zipWithIndex [A1 >: A, That] (implicit bf: CanBuildFrom[This, (A1, Int), That]) : That

    Zips this set with its indices.

    Zips this set with its indices.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    A1

    the type of the first half of the returned pairs (this is always a supertype of the collection's element type A).

    That

    the class of the returned collection. Where possible, That is the same class as the current collection class Repr, but this depends on the element type (A1, Int) being admissible for that class, which means that an implicit instance of type CanBuildFrom[Repr, (A1, Int), That]. is found.

    returns

    A new collection of type That containing pairs consisting of all elements of this set paired with their index. Indices start at 0.

    definition classes: IterableLike
  147. def | (that: Set[A]) : This

    Computes the union between this set and another set.

    Computes the union between this set and another set.

    Note: Same as union.

    that

    the set to form the union with.

    returns

    a new set consisting of all elements that are in this set or in the given set that.

Inherited from Subtractable[A, This]

Inherited from Addable[A, This]

Inherited from IterableLike[A, This]

Inherited from TraversableLike[A, This]

Inherited from TraversableOnce[A]

Inherited from FilterMonadic[A, This]

Inherited from HasNewBuilder[A, This]

Inherited from Equals

Inherited from AnyRef

Inherited from Any