scala.collection.mutable

MapBuilder

class MapBuilder[A, B, Coll <: GenMap[A, B] with GenMapLike[A, B, Coll]] extends Builder[(A, B), Coll]

The canonical builder for immutable maps, working with the map's + method to add new elements. Collections are built from their empty element using this + method.

A

Type of the keys for the map this builder creates.

B

Type of the values for the map this builder creates.

Coll

The type of the actual collection this builder builds.

Source
MapBuilder.scala
Since

2.8

Linear Supertypes
Builder[(A, B), Coll], Growable[(A, B)], Clearable, AnyRef, Any
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Inherited
  1. MapBuilder
  2. Builder
  3. Growable
  4. Clearable
  5. AnyRef
  6. Any
Implicitly
  1. by StringAdd
  2. by StringFormat
  3. by Ensuring
  4. by ArrowAssoc
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Visibility
  1. Public
  2. All

Instance Constructors

  1. new MapBuilder(empty: Coll)

    empty

    The empty element of the collection.

Value Members

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

    Definition Classes
    AnyRef

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

    Definition Classes
    Any

  3. final def ##(): Int

    Definition Classes
    AnyRef → Any

  4. def +(other: String): String

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

  5. def ++=(xs: TraversableOnce[(A, B)]): MapBuilder.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

  6. def +=(x: (A, B)): MapBuilder.this.type

    Adds a single element to the builder.

    Adds a single element to the builder.

    returns

    the builder itself.

    Definition Classes
    MapBuilder → Builder → Growable

  7. def +=(elem1: (A, B), elem2: (A, B), elems: (A, B)*): MapBuilder.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

  8. def ->[B](y: B): (MapBuilder[A, B, Coll], B)

    Implicit information
    This member is added by an implicit conversion from MapBuilder[A, B, Coll] to ArrowAssoc[MapBuilder[A, B, Coll]] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()

  9. final def ==(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

  10. final def ==(arg0: Any): Boolean

    Definition Classes
    Any

  11. final def asInstanceOf[T0]: T0

    Definition Classes
    Any

  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
    MapBuilder → Builder → Growable → Clearable

  13. def clone(): AnyRef

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

  14. var elems: Coll

    Attributes
    protected

  15. def ensuring(cond: (MapBuilder[A, B, Coll]) ⇒ Boolean, msg: ⇒ Any): MapBuilder[A, B, Coll]

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

  16. def ensuring(cond: (MapBuilder[A, B, Coll]) ⇒ Boolean): MapBuilder[A, B, Coll]

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

  17. def ensuring(cond: Boolean, msg: ⇒ Any): MapBuilder[A, B, Coll]

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

  18. def ensuring(cond: Boolean): MapBuilder[A, B, Coll]

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

  19. final def eq(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

  20. def equals(arg0: Any): Boolean

    Definition Classes
    AnyRef → Any

  21. def finalize(): Unit

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )

  22. def formatted(fmtstr: String): String

    Returns string formatted according to given format string.

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

    Implicit information
    This member is added by an implicit conversion from MapBuilder[A, B, Coll] to StringFormat[MapBuilder[A, B, Coll]] performed by method StringFormat in scala.Predef.
    Definition Classes
    StringFormat
    Annotations
    @inline()

  23. final def getClass(): Class[_]

    Definition Classes
    AnyRef → Any

  24. def hashCode(): Int

    Definition Classes
    AnyRef → Any

  25. final def isInstanceOf[T0]: Boolean

    Definition Classes
    Any

  26. def mapResult[NewTo](f: (Coll) ⇒ NewTo): Builder[(A, B), NewTo]

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

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

    NewTo

    the type of collection returned by f.

    f

    the transformation function.

    returns

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

    Definition Classes
    Builder

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

    Definition Classes
    AnyRef

  28. final def notify(): Unit

    Definition Classes
    AnyRef

  29. final def notifyAll(): Unit

    Definition Classes
    AnyRef

  30. def result(): Coll

    Produces a collection from the added elements.

    Produces a collection from the added elements. The builder's contents are undefined after this operation.

    returns

    a collection containing the elements added to this builder.

    Definition Classes
    MapBuilder → Builder

  31. 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

  32. 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. 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.

    Definition Classes
    Builder

  33. 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

  34. 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

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

    Definition Classes
    AnyRef

  36. def toString(): String

    Definition Classes
    AnyRef → Any

  37. final def wait(): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  38. final def wait(arg0: Long, arg1: Int): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  39. final def wait(arg0: Long): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  40. def →[B](y: B): (MapBuilder[A, B, Coll], B)

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

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

Inherited from Growable[(A, B)]

Inherited from Clearable

Inherited from AnyRef

Inherited from Any

Inherited by implicit conversion StringAdd from MapBuilder[A, B, Coll] to StringAdd[MapBuilder[A, B, Coll]]

Inherited by implicit conversion StringFormat from MapBuilder[A, B, Coll] to StringFormat[MapBuilder[A, B, Coll]]

Inherited by implicit conversion Ensuring from MapBuilder[A, B, Coll] to Ensuring[MapBuilder[A, B, Coll]]

Inherited by implicit conversion ArrowAssoc from MapBuilder[A, B, Coll] to ArrowAssoc[MapBuilder[A, B, Coll]]

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