Scaladoc for scala.collection.mutable.MapBuilder

Inherits

Builder
Growable
AnyRef
Any

Value Members

def ++=(elems: Traversable[(A, B)]): Growable[(A, B)]

adds all elements contained in a traversable collection to this growable collection

adds all elements contained in a traversable collection to this growable collection.

elems
the collection containing the elements to add.
returns
the growable collection itself.

definition classes: Growable
def ++=(iter: Iterator[(A, B)]): Growable[(A, B)]

adds all elements produced by an iterator to this growable collection

adds all elements produced by an iterator to this growable collection.

iter
the iterator producing the elements to add.
returns
the growable collection itself.

definition classes: Growable
def +=(x: (A, B)): MapBuilder[A, B, Coll]

Adds a single element to the builder

Adds a single element to the builder.
def +=(elem1: (A, B), elem2: (A, B), elems: (A, B)*): Growable[(A, B)]

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
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.
def equals(arg0: Any): Boolean

This method is used to compare the receiver object (this) with the argument object (arg0) for equivalence
This method is used to compare the receiver object (this) with the argument object (arg0) for equivalence.
The default implementations of this method is 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 AnyRef 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 often necessary to override hashCode to ensure that objects that are "equal" (o1.equals(o2) returns true) hash to the same Int (o1.hashCode.equals(o2.hashCode)).
arg0
the object to compare against this object for equality.
returns
true if the receiver object is equivalent to the argument; false otherwise.

definition classes: AnyRef ⇐ Any
def hashCode(): Int

Returns a hash code value for the object

Returns a hash code value for the object.
The default hashing algorithm is platform dependent.
Note that it is allowed for two objects to have identical hash codes (o1.hashCode.equals(o2.hashCode)) yet not be equal (o1.equals(o2) returns false). A degenerate implementation could always return 0. However, it is required that if two objects are equal (o1.equals(o2) returns true) that they have identical hash codes (o1.hashCode.equals(o2.hashCode)). Therefore, when overriding this method, be sure to verify that the behavior is consistent with the equals method.

definition classes: AnyRef ⇐ Any
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
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.
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.

definition classes: Builder
def toString(): String

Returns a string representation of the object

Returns a string representation of the object.
The default representation is platform dependent.

definition classes: AnyRef ⇐ Any

Instance constructors

new MapBuilder(empty: Coll)
new MapBuilder()

MapBuilder

class MapBuilder[A, B, Coll <: Map[A, B] with MapLike[A, B, Coll]] extends Builder[(A, B), Coll]

Inherits

Value Members

def ++=(elems: Traversable[(A, B)]): Growable[(A, B)]

def ++=(iter: Iterator[(A, B)]): Growable[(A, B)]

def +=(x: (A, B)): MapBuilder[A, B, Coll]

def +=(elem1: (A, B), elem2: (A, B), elems: (A, B)*): Growable[(A, B)]

def clear(): Unit

def equals(arg0: Any): Boolean

def hashCode(): Int

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

def result(): Coll

def sizeHint(size: Int): Unit

def toString(): String

Instance constructors

new MapBuilder(empty: Coll)

new MapBuilder()