Packages

trait LazyCombiner[Elem, +To, Buff <: Growable[Elem] with Sizing] extends Combiner[Elem, To]

Implements combining contents of two combiners by postponing the operation until result method is called. It chains the leaf results together instead of evaluating the actual collection.

Elem

the type of the elements in the combiner

To

the type of the collection the combiner produces

Buff

the type of the buffers that contain leaf results and this combiner chains together

Source
LazyCombiner.scala
Linear Supertypes
Combiner[Elem, To], Parallel, Sizing, Builder[Elem, To], Growable[Elem], Clearable, AnyRef, Any
Known Subclasses
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Inherited
  1. LazyCombiner
  2. Combiner
  3. Parallel
  4. Sizing
  5. Builder
  6. Growable
  7. Clearable
  8. AnyRef
  9. Any
Implicitly
  1. by CollectionsHaveToParArray
  2. by any2stringadd
  3. by StringFormat
  4. by Ensuring
  5. by ArrowAssoc
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Visibility
  1. Public
  2. All

Abstract Value Members

  1. abstract def allocateAndCopy: To

    Method that allocates the data structure and copies elements into it using size and chain members.

  2. abstract val chain: ArrayBuffer[Buff]
  3. abstract def newLazyCombiner(buffchain: ArrayBuffer[Buff]): LazyCombiner[Elem, To, Buff]

Concrete Value Members

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

    Test two objects for inequality.

    Test two objects for inequality.

    returns

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

    Definition Classes
    AnyRef → Any
  2. 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
  3. def +(other: String): String
    Implicit
    This member is added by an implicit conversion from LazyCombiner[Elem, To, Buff] to any2stringadd[LazyCombiner[Elem, To, Buff]] performed by method any2stringadd in scala.Predef.
    Definition Classes
    any2stringadd
  4. def ++=(xs: TraversableOnce[Elem]): LazyCombiner.this.type

    adds all elements produced by a TraversableOnce to this growable collection.

    adds all elements produced by a TraversableOnce to this growable collection.

    xs

    the TraversableOnce producing the elements to add.

    returns

    the growable collection itself.

    Definition Classes
    Growable
  5. def +=(elem: Elem): LazyCombiner.this.type

    Adds a single element to the builder.

    Adds a single element to the builder.

    elem

    the element to be added.

    returns

    the builder itself.

    Definition Classes
    LazyCombinerBuilderGrowable
  6. def +=(elem1: Elem, elem2: Elem, elems: Elem*): LazyCombiner.this.type

    adds two or more elements to this growable collection.

    adds two or more elements to this growable collection.

    elem1

    the first element to add.

    elem2

    the second element to add.

    elems

    the remaining elements to add.

    returns

    the growable collection itself

    Definition Classes
    Growable
  7. def ->[B](y: B): (LazyCombiner[Elem, To, Buff], B)
    Implicit
    This member is added by an implicit conversion from LazyCombiner[Elem, To, Buff] to ArrowAssoc[LazyCombiner[Elem, To, Buff]] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()
  8. final def ==(arg0: Any): Boolean

    The expression x == that is equivalent to if (x eq null) that eq null else x.equals(that).

    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
    AnyRef → Any
  9. val _combinerTaskSupport: TaskSupport
    Definition Classes
    Combiner
    Annotations
    @transient() @volatile()
  10. 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.

  11. def canBeShared: Boolean

    Returns true if this combiner has a thread-safe += and is meant to be shared across several threads constructing the collection.

    Returns true if this combiner has a thread-safe += and is meant to be shared across several threads constructing the collection.

    By default, this method returns false.

    Definition Classes
    Combiner
  12. def clear(): Unit

    Clears the contents of this builder.

    Clears the contents of this builder. After execution of this method the builder will contain no elements.

    Definition Classes
    LazyCombinerBuilderGrowableClearable
  13. 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[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
    Note

    not specified by SLS as a member of AnyRef

  14. def combine[N <: Elem, NewTo >: To](other: Combiner[N, NewTo]): Combiner[N, NewTo]

    Combines the contents of the receiver builder and the other builder, producing a new builder containing both their elements.

    Combines the contents of the receiver builder and the other builder, producing a new builder containing both their elements.

    This method may combine the two builders by copying them into a larger collection, by producing a lazy view that gets evaluated once result is invoked, or use a merge operation specific to the data structure in question.

    Note that both the receiver builder and other builder become invalidated after the invocation of this method, and should be cleared (see clear) if they are to be used again.

    Also, combining two combiners c1 and c2 for which c1 eq c2 is true, that is, they are the same objects in memory:

    c1.combine(c2)

    always does nothing and returns c1.

    N

    the type of elements contained by the other builder

    NewTo

    the type of collection produced by the other builder

    other

    the other builder

    returns

    the parallel builder containing both the elements of this and the other builder

    Definition Classes
    LazyCombinerCombiner
  15. def combinerTaskSupport: TaskSupport
    Definition Classes
    Combiner
  16. def combinerTaskSupport_=(cts: TaskSupport): Unit
    Definition Classes
    Combiner
  17. def ensuring(cond: (LazyCombiner[Elem, To, Buff]) ⇒ Boolean, msg: ⇒ Any): LazyCombiner[Elem, To, Buff]
    Implicit
    This member is added by an implicit conversion from LazyCombiner[Elem, To, Buff] to Ensuring[LazyCombiner[Elem, To, Buff]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  18. def ensuring(cond: (LazyCombiner[Elem, To, Buff]) ⇒ Boolean): LazyCombiner[Elem, To, Buff]
    Implicit
    This member is added by an implicit conversion from LazyCombiner[Elem, To, Buff] to Ensuring[LazyCombiner[Elem, To, Buff]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  19. def ensuring(cond: Boolean, msg: ⇒ Any): LazyCombiner[Elem, To, Buff]
    Implicit
    This member is added by an implicit conversion from LazyCombiner[Elem, To, Buff] to Ensuring[LazyCombiner[Elem, To, Buff]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  20. def ensuring(cond: Boolean): LazyCombiner[Elem, To, Buff]
    Implicit
    This member is added by an implicit conversion from LazyCombiner[Elem, To, Buff] to Ensuring[LazyCombiner[Elem, To, Buff]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  21. final def eq(arg0: AnyRef): Boolean

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

    Tests whether the argument (that) 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
  22. def equals(arg0: Any): Boolean

    The equality method for reference types.

    The equality method for reference types. Default implementation delegates to eq.

    See also equals in scala.Any.

    returns

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

    Definition Classes
    AnyRef → Any
  23. 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[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
    Note

    not specified by SLS as a member of AnyRef

  24. 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
    This member is added by an implicit conversion from LazyCombiner[Elem, To, Buff] to StringFormat[LazyCombiner[Elem, To, Buff]] performed by method StringFormat in scala.Predef.
    Definition Classes
    StringFormat
    Annotations
    @inline()
  25. final def getClass(): Class[_]

    Returns the runtime class representation of the object.

    Returns the runtime class representation of the object.

    returns

    a class object corresponding to the runtime type of the receiver.

    Definition Classes
    AnyRef → Any
  26. def hashCode(): Int

    The hashCode method for reference types.

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

    returns

    the hash code value for this object.

    Definition Classes
    AnyRef → Any
  27. 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
  28. val lastbuff: Buff
  29. def mapResult[NewTo](f: (To) ⇒ NewTo): Builder[Elem, 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
    Note

    The original builder should no longer be used after mapResult is called.

  30. 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
  31. 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

  32. 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

  33. def result(): To

    Produces a collection from the added elements.

    Produces a collection from the added elements. This is a terminal operation: the builder's contents are undefined after this operation, and no further methods should be called.

    returns

    a collection containing the elements added to this builder.

    Definition Classes
    LazyCombinerBuilder
  34. def resultWithTaskSupport: To

    Constructs the result and sets the appropriate tasksupport object to the resulting collection if this is applicable.

    Constructs the result and sets the appropriate tasksupport object to the resulting collection if this is applicable.

    Definition Classes
    Combiner
  35. def size: Int
    Definition Classes
    LazyCombinerSizing
  36. def sizeHint(coll: TraversableLike[_, _], delta: Int): 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
  37. def sizeHint(coll: TraversableLike[_, _]): 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, which is determined by calling sizeHint.

    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.

    Definition Classes
    Builder
  38. 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
  39. def sizeHintBounded(size: Int, boundingColl: 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
  40. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  41. def toParArray: ParArray[T]
    Implicit
    This member is added by an implicit conversion from LazyCombiner[Elem, To, Buff] to CollectionsHaveToParArray[LazyCombiner[Elem, To, Buff], T] performed by method CollectionsHaveToParArray in scala.collection.parallel. This conversion will take place only if an implicit value of type (LazyCombiner[Elem, To, Buff]) ⇒ GenTraversableOnce[T] is in scope.
    Definition Classes
    CollectionsHaveToParArray
  42. 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
  43. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  44. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  45. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  46. def [B](y: B): (LazyCombiner[Elem, To, Buff], B)
    Implicit
    This member is added by an implicit conversion from LazyCombiner[Elem, To, Buff] to ArrowAssoc[LazyCombiner[Elem, To, Buff]] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc

Inherited from Combiner[Elem, To]

Inherited from Parallel

Inherited from Sizing

Inherited from Builder[Elem, To]

Inherited from Growable[Elem]

Inherited from Clearable

Inherited from AnyRef

Inherited from Any

Inherited by implicit conversion CollectionsHaveToParArray from LazyCombiner[Elem, To, Buff] to CollectionsHaveToParArray[LazyCombiner[Elem, To, Buff], T]

Inherited by implicit conversion any2stringadd from LazyCombiner[Elem, To, Buff] to any2stringadd[LazyCombiner[Elem, To, Buff]]

Inherited by implicit conversion StringFormat from LazyCombiner[Elem, To, Buff] to StringFormat[LazyCombiner[Elem, To, Buff]]

Inherited by implicit conversion Ensuring from LazyCombiner[Elem, To, Buff] to Ensuring[LazyCombiner[Elem, To, Buff]]

Inherited by implicit conversion ArrowAssoc from LazyCombiner[Elem, To, Buff] to ArrowAssoc[LazyCombiner[Elem, To, Buff]]

Ungrouped