interface HashSet.Builder<T>

A mutable HashSet builder used to efficiently create new immutable instances. See the Set documentation and the HashSet.Builder API documentation

Extends: RSetBase.Builder<T,Tp>

Type parameters

Name	Description
T	the value type

Properties

isEmpty

Returns true if there are no values in the builder.

Definition

readonly isEmpty: boolean;

example

HashSet.of(1, 2, 3).toBuilder().isEmpty
// => false

Overrides

Builder.isEmpty

size

Returns the amount of values in the builder.

Definition

readonly size: number;

example

HashSet.of(1, 2, 3).toBuilder().size
// => 3

Overrides

Builder.size

Methods

add

Adds given value to the builder.

Definition

add(value: T): boolean;

Parameters

Name	Type	Description
value	T

example

const s = HashSet.of(1, 2, 3).toBuilder()
s.add(2)   // => false
s.add(10)  // => true

Overrides

Builder.add

addAll

Adds the values in given values StreamSource to the builder.

Definition

addAll(values: StreamSource<T>): boolean;

Parameters

Name	Type	Description
values	StreamSource<T>

example

const s = HashSet.of(1, 2, 3).toBuilder()
s.addAll([1, 3])   // => false
s.addAll([2, 10])  // => true

Overrides

Builder.addAll

build

Returns an immutable instance containing the values in this builder.

Definition

build(): WithElem<Tp, T>['normal'];

example

const s = HashSet.of(1, 2, 3).toBuilder()
const s2: HashSet<number> = m.build()

Overrides

Builder.build

forEach

Performs given function f for each value of the builder.

Definition

forEach(f: (value: T, index: number, halt: () => void) => void, options?: {
      state?: TraverseState;
    }): void;

Parameters

Name	Type	Description
f	(value: T, index: number, halt: () => void) => void	the function to perform for each element, receiving: - value: the next element - index: the index of the element - halt: a function that, if called, ensures that no new elements are passed
options	{       state?: TraverseState;     }	(optional) an object containing the following properties: - state: (optional) the traversal state

throws

RibuError.ModifiedBuilderWhileLoopingOverItError if the builder is modified while looping over it

example

HashSet.of(1, 2, 3).toBuilder.forEach((value, i, halt) => {
console.log([value, i]);
if (i >= 1) halt();
})
// => logs [1, 0]  [2, 1]

note

O(N)

Overrides

Builder.forEach

has

Returns true if the given value is present in the builder.

Definition

has<U = T>(value: RelatedTo<T, U>): boolean;

Type parameters

Name	Default	Description
U	T

Parameters

Name	Type	Description
value	RelatedTo<T, U>	the value to look for

example

const s = HashSet.of(1, 2, 3).toBuilder()
s.has(2)   // => true
s.has(10)  // => false

Overrides

Builder.has

remove

Remove the given value from the builder.

Definition

remove<U = T>(value: RelatedTo<T, U>): boolean;

Type parameters

Name	Default	Description
U	T

Parameters

Name	Type	Description
value	RelatedTo<T, U>

example

const s = HashSet.of(1, 2, 3).toBuilder()
s.remove(10)  // => false
s.remove(2)   // => true

Overrides

Builder.remove

removeAll

Removes the values in given values StreamSource from this builder.

Definition

removeAll<U = T>(values: StreamSource<RelatedTo<T, U>>): boolean;

Type parameters

Name	Default	Description
U	T

Parameters

Name	Type	Description
values	StreamSource<RelatedTo<T, U>>	a StreamSource of values

example

const s = HashSet.of(1, 2, 3).toBuilder()
s.removeAll([1, 3])   // => false
s.removeAll([2, 10])  // => true

Overrides

Builder.removeAll