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

ofRef

scala.collection.mutable.ArrayBuilder.ofRef

final class ofRef[T <: AnyRef](implicit ct: ClassTag[T]) extends ArrayBuilder[T]

A class for array builders for arrays of reference types.

This builder can be reused.

Type parameters

T: type of elements for the array builder, subtype of AnyRef with a ClassTag context bound.

Attributes

Source: ArrayBuilder.scala
Graph
Supertypes: class ArrayBuilder[T]

trait Serializable

trait ReusableBuilder[T, Array[T]]

trait Builder[T, Array[T]]

trait Growable[T]

trait Clearable

class Object

trait Matchable

class Any
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Members list

Value members

Concrete methods

Adds a single element to this growable collection.

Value parameters

elem: the element to add.

Attributes

Returns: the growable collection itself
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

Definition Classes: ArrayBuilder -> ReusableBuilder -> Builder -> Clearable
Source: ArrayBuilder.scala

Compares the receiver object (this) with the argument object (that) for equivalence.

Any implementation of this method should be an equivalence relation:

- It is reflexive: for any instance x of type Any, x.equals(x) should return true. - It is symmetric: for any instances x and y of type Any, x.equals(y) should return true if and only if y.equals(x) returns true. - It is transitive: for any instances x, y, and z of type Any if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.

If you override this method, you should verify that your implementation remains an equivalence relation. Additionally, when overriding this method it is usually necessary to override hashCode to ensure that objects which are "equal" (o1.equals(o2) returns true) hash to the same scala.Int. (o1.hashCode.equals(o2.hashCode)).

Value parameters

that: the object to compare against this object for equality.

Attributes

Returns: true if the receiver object is equivalent to the argument; false otherwise.
Definition Classes: Any
Source: ArrayBuilder.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.
Source: ArrayBuilder.scala

Returns a string representation of the object.

The default representation is platform dependent.

Attributes

Returns: a string representation of the object.
Definition Classes: Any
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

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: ArrayBuilder -> Growable
Inherited from:: ArrayBuilder
Source: ArrayBuilder.scala

Add a slice of an array.

Attributes

Inherited from:: ArrayBuilder
Source: ArrayBuilder.scala

Add all elements of an array.

Attributes

Inherited from:: ArrayBuilder
Source: ArrayBuilder.scala

Current number of elements.

Attributes

Definition Classes: ArrayBuilder -> Growable
Inherited from:: ArrayBuilder
Source: ArrayBuilder.scala

Current number of elements.

Attributes

Inherited from:: ArrayBuilder
Source: ArrayBuilder.scala

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

Attributes

Inherited from:: Builder
Source: Builder.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: ArrayBuilder -> Builder
Inherited from:: ArrayBuilder
Source: ArrayBuilder.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

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

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