Scala 3/scala/scala.collection/scala.collection.mutable/ArrayBuilder

ArrayBuilder

scala.collection.mutable.ArrayBuilder

See theArrayBuilder companion object

sealed abstract class ArrayBuilder[T] extends ReusableBuilder[T, Array[T]], Serializable

A builder class for arrays.

Type parameters

T: the type of the elements for the builder.

Attributes

Companion: object
Source: ArrayBuilder.scala
Graph
Supertypes: trait Serializable

trait ReusableBuilder[T, Array[T]]

trait Builder[T, Array[T]]

trait Growable[T]

trait Clearable

class Object

trait Matchable

class Any
Show all
Known subtypes: class ofBoolean

class ofByte

class ofChar

class ofDouble

class ofFloat

class ofInt

class ofLong

class ofRef[T]

class ofShort

class ofUnit
Show all

Members list

Value members

Concrete methods

Add all elements of an array.

Attributes

Source: ArrayBuilder.scala

Add a slice of an array.

Attributes

Source: ArrayBuilder.scala

Adds all elements produced by an IterableOnce to this growable collection.

Value parameters

elems: the IterableOnce producing the elements to add.

Attributes

Returns: the growable collection itself.
Definition Classes: Growable
Source: ArrayBuilder.scala

Clears the contents of this builder.

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

If executed immediately after a call to result(), this allows a new instance of the same type of collection to be built.

Attributes

Source: ArrayBuilder.scala

Current number of elements.

Attributes

Definition Classes: Growable
Source: ArrayBuilder.scala

Current number of elements.

Attributes

Source: ArrayBuilder.scala

Gives a hint how many elements are expected to be added in total by the time result is called.

Some builder classes will optimize their representation based on the hint. However, builder implementations are required to work correctly even if the hint is wrong, e.g., a different number of elements is added, or the hint is out of range.

The default implementation simply ignores the hint.

Value parameters

size: the hint how many elements will be added.

Attributes

Definition Classes: Builder
Source: ArrayBuilder.scala

Inherited methods

Alias for addAll

Attributes

Inherited from:: Growable
Source: Growable.scala

Alias for addOne

Attributes

Inherited from:: Growable
Source: Growable.scala

A builder resulting from this builder my mapping the result using f.

Attributes

Inherited from:: Builder
Source: Builder.scala

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

This method provides a hint only if the collection has a known size, as specified by the following pseudocode:

if (coll.knownSize != -1)
  if (coll.knownSize + delta <= 0) sizeHint(0)
  else sizeHint(coll.knownSize + delta)

If the delta is negative and the result size is known to be negative, then the size hint is issued at zero.

Some builder classes will optimize their representation based on the hint. However, builder implementations are required to work correctly even if the hint is wrong, i.e., if a different number of elements is added.

Value parameters

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 (zero if omitted).

Attributes

Inherited from:: Builder
Source: Builder.scala

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.

Value parameters

boundingColl: the bounding collection. If it is an IndexedSeqLike, then sizes larger than collection's size are reduced.
size: the hint how many elements will be added.

Attributes

Inherited from:: Builder
Source: Builder.scala

Inherited and Abstract methods

Adds a single element to this growable collection.

Value parameters

elem: the element to add.

Attributes

Returns: the growable collection itself
Inherited from:: Growable
Source: Growable.scala

Produces a collection from the added elements.

After a call to result, the behavior of all other methods is undefined save for clear(). If clear() is called, then the builder is reset and may be used to build another instance.

Attributes

Returns: a collection containing the elements added to this builder.
Definition Classes: ReusableBuilder -> Builder
Inherited from:: ReusableBuilder
Source: ReusableBuilder.scala

Deprecated and Inherited methods

Adds two or more elements to this growable collection.

Value parameters

elem1: the first element to add.
elem2: the second element to add.
elems: the remaining elements to add.

Attributes

Returns: the growable collection itself
Deprecated: true
Inherited from:: Growable
Source: Growable.scala

In this article

Generated with