scala.collection.generic

GenericTraversableTemplate

trait GenericTraversableTemplate [+A, +CC[X] <: GenTraversable[X]] extends HasNewBuilder[A, CC[A]]

A template class for companion objects of regular collection classes that represent an unconstrained higher-kinded type.

A

The type of the collection elements.

CC

The type constructor representing the collection class.

Source
GenericTraversableTemplate.scala
Since

2.8

Linear Supertypes
HasNewBuilder[A, CC[A] @scala.annotation.unchecked.uncheckedVariance], AnyRef, Any
Known Subclasses
::, AbsScope, Appended, Appended, Appended, Appended, Appended, Appended, ArrayBuffer, ArraySeq, ArrayStack, Atom, Attribute, BitSet, BitSet, BitSet, BitSet1, BitSet2, BitSetN, Buffer, BufferProxy, BufferWrapper, ByOne, Comment, ConcurrentMap, Cons, Content, DefaultKeySet, DefaultKeySortedSet, DefaultKeySortedSet, DefaultMap, DefaultMap, DefaultMapModel, DefaultValuesIterable, Document, DoubleLinkedList, DroppedWhile, DroppedWhile, DroppedWhile, DroppedWhile, DroppedWhile, Elem, Empty, EmptyMap, EmptySet, EmptyView, EmptyView, EmptyView, EmptyView, EntityRef, Exclusive, Filtered, Filtered, Filtered, Filtered, Filtered, FlatMapped, FlatMapped, FlatMapped, FlatMapped, Forced, Forced, Forced, Forced, Forced, Forced, GenIterable, GenIterableView, GenMap, GenSeq, GenSeqView, GenSet, GenTraversable, GenTraversableView, GenericParMapTemplate, GenericParTemplate, GenericSetTemplate, Group, HashMap, HashMap, HashMap1, HashSet, HashSet, HashSet1, HashTrieMap, HashTrieSet, History, ImmutableDefaultKeySet, ImmutableMapAdaptor, ImmutableSetAdaptor, Impl, Inclusive, Inclusive, IndexedSeq, IndexedSeq, IndexedSeq, IndexedSeqView, Indices, IntMap, Iterable, Iterable, Iterable, IterableForwarder, IterableProxy, IterableView, IterableViewLike, JCollectionWrapper, JConcurrentMapWrapper, JDictionaryWrapper, JIterableWrapper, JListWrapper, JMapWrapper, JMapWrapperLike, JPropertiesWrapper, JSetWrapper, LinearSeq, LinearSeq, LinearSeq, LinkedHashMap, LinkedHashSet, LinkedList, List, ListBuffer, ListMap, ListMap, ListSet, LongMap, Map, Map, Map, Map1, Map2, Map3, Map4, MapProxy, MapProxy, MapProxy, Mapped, Mapped, Mapped, Mapped, Mapped, Mapped, MetaData, MultiMap, MutableList, Nil, Node, Node, Node, NodeBuffer, NodeSeq, Null, NumericRange, ObservableBuffer, ObservableMap, ObservableSet, OpenHashMap, PCData, PagedSeq, ParArray, ParHashMap, ParHashMap, ParHashSet, ParHashSet, ParIterable, ParIterable, ParIterable, ParIterableView, ParIterableViewLike, ParMap, ParMap, ParMap, ParRange, ParSeq, ParSeq, ParSeq, ParSeqView, ParSeqViewLike, ParSet, ParSet, ParSet, ParVector, Patched, Patched, Patched, PicklerEnv, PrefixedAttribute, Prepended, Prepended, Prepended, PriorityQueue, PriorityQueueProxy, ProcInstr, Queue, Queue, QueueProxy, Range, RefBuffer, ResizableArray, Reversed, Reversed, Reversed, Reversed, RevertibleHistory, Scope, Script, SelectionSet, Seq, Seq, Seq, SeqForwarder, SeqProxy, SeqView, SeqViewLike, Set, Set, Set, Set1, Set2, Set3, Set4, SetProxy, SetProxy, SetProxy, Sliced, Sliced, Sliced, Sliced, Sliced, Sliced, Sliced, SortedMap, SortedMap, SortedSet, SortedSet, SpecialNode, Stack, Stack, StackProxy, Stream, StreamView, StreamViewLike, StringBuilder, SynchronizedBuffer, SynchronizedMap, SynchronizedPriorityQueue, SynchronizedQueue, SynchronizedSet, SynchronizedStack, SystemProperties, TakenWhile, TakenWhile, TakenWhile, TakenWhile, TakenWhile, Text, Transformed, Transformed, Transformed, Transformed, Transformed, Transformed, Transformed, Traversable, Traversable, Traversable, TraversableForwarder, TraversableProxy, TraversableView, TraversableViewLike, TreeMap, TreeSet, UnPicklerEnv, Unparsed, UnprefixedAttribute, UnrolledBuffer, ValueSet, Vector, WeakHashMap, WithDefault, WithDefault, WithDefault, WrappedArray, WrappedString, Zipped, Zipped, Zipped, Zipped, Zipped, ZippedAll, ZippedAll, ZippedAll, ZippedAll, ZippedAll, columns, indices, items, ofBoolean, ofByte, ofChar, ofDouble, ofFloat, ofInt, ofLong, ofRef, ofShort, ofUnit, pages, rows
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  1. GenericTraversableTemplate
  2. HasNewBuilder
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Visibility
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Abstract Value Members

  1. def companion : GenericCompanion[CC]

    The factory companion object that builds instances of class CC.

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

    Attributes
    abstract
  2. def foreach [U] (f: (A) ⇒ U): Unit

    Applies a function f to all elements of this collection.

    Applies a function f to all elements of this collection.

    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.

    Attributes
    abstract
  3. def head : A

    Selects the first element of this collection.

    Selects the first element of this collection.

    returns

    the first element of this collection.

    Attributes
    abstract
  4. def isEmpty : Boolean

    Tests whether this collection is empty.

    Tests whether this collection is empty.

    returns

    true if the collection contain no elements, false otherwise.

    Attributes
    abstract

Concrete Value Members

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

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

    Test two objects for inequality.

    Test two objects for inequality.

    returns

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

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

    Equivalent to x.hashCode except for boxed numeric types.

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

    returns

    a hash value consistent with ==

    Attributes
    final
    Definition Classes
    AnyRef → Any
  4. def == (arg0: AnyRef): Boolean

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

    Test two objects for equality.

    Test two objects for equality.

    returns

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

    Attributes
    final
    Definition Classes
    Any
  6. 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.

    Attributes
    final
    Definition Classes
    Any
  7. def clone (): AnyRef

    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.

    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws()
  8. 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.

    Attributes
    final
    Definition Classes
    AnyRef
  9. def equals (arg0: Any): Boolean

    The equality method for reference types.

    The equality method for reference types. See equals in Any.

    returns

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

    Definition Classes
    AnyRef → Any
  10. 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()
  11. def flatten [B] : CC[B]

    [use case] Converts this collection of traversable collections into a collection in which all element collections are concatenated.

    [use case]

    Converts this collection of traversable collections into a collection in which all element collections are concatenated.

    B

    the type of the elements of each traversable collection.

    returns

    a new collection resulting from concatenating all element collections.

    Attributes
    abstract
  12. def flatten [B] (implicit asTraversable: (A) ⇒ TraversableOnce[B]): CC[B]

    Converts this collection of traversable collections into a collection in which all element collections are concatenated.

    Converts this collection of traversable collections into a collection in which all element collections are concatenated.

    B

    the type of the elements of each traversable collection.

    asTraversable

    an implicit conversion which asserts that the element type of this collection is a Traversable.

    returns

    a new collection resulting from concatenating all element collections.

  13. def foreach (f: (A) ⇒ Unit): Unit

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

    [use case]

    Applies a function f to all elements of this collection.

    f

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

    Attributes
    abstract
  14. def genericBuilder [B] : Builder[B, CC[B]]

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

  15. def getClass (): java.lang.Class[_ <: java.lang.Object]

    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.

    Attributes
    final
    Definition Classes
    AnyRef
  16. 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
    AnyRef → Any
  17. 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.

    Attributes
    final
    Definition Classes
    Any
  18. 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.

    Attributes
    final
    Definition Classes
    AnyRef
  19. def newBuilder : Builder[A, CC[A]]

    The builder that builds instances of type CC[A]

    The builder that builds instances of type CC[A]

    Attributes
    protected[this]
    Definition Classes
    GenericTraversableTemplateHasNewBuilder
  20. 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
  21. 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
  22. def synchronized [T0] (arg0: ⇒ T0): T0

    Attributes
    final
    Definition Classes
    AnyRef
  23. def toString (): String

    Creates a String representation of this object.

    Creates a String representation of this object. The default representation is platform dependent. On the java platform it is the concatenation of the class name, "@", and the object's hashcode in hexadecimal.

    returns

    a String representation of the object.

    Definition Classes
    AnyRef → Any
  24. def transpose [B] (implicit asTraversable: (A) ⇒ TraversableOnce[B]): CC[CC[B]]

    Transposes this collection of traversable collections into a collection of collections.

    Transposes this collection of traversable collections into a collection of collections.

    B

    the type of the elements of each traversable collection.

    asTraversable

    an implicit conversion which asserts that the element type of this collection is a Traversable.

    returns

    a two-dimensional collection of collections which has as nth row the nth column of this collection.

    Annotations
    @migration
    Migration

    "As of 2.9, transpose throws an exception if collections are not uniformly sized."

  25. def unzip [A1, A2] (implicit asPair: (A) ⇒ (A1, A2)): (CC[A1], CC[A2])

    Converts this collection of pairs into two collections of the first and second half of each pair.

    Converts this collection of pairs into two collections of the first and second half of each pair.

    asPair

    an implicit conversion which asserts that the element type of this collection is a pair.

    returns

    a pair collections, containing the first, respectively second half of each element pair of this collection.

  26. def unzip3 [A1, A2, A3] (implicit asTriple: (A) ⇒ (A1, A2, A3)): (CC[A1], CC[A2], CC[A3])

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

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

    returns

    a triple collections, containing the first, second, respectively third member of each element triple of this collection.

  27. def wait (): Unit

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

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

    Attributes
    final
    Definition Classes
    AnyRef
    Annotations
    @throws()

Inherited from HasNewBuilder[A, CC[A] @scala.annotation.unchecked.uncheckedVariance]

Inherited from AnyRef

Inherited from Any