Interface Set<T>

Type Parameters

T

Hierarchy

Set

Index

Properties

[toStringTag] size

Methods

[iterator] add clear delete entries forEach has keys values

Properties

`Readonly` [toStringTag]

[toStringTag]: string

`Readonly` size

size: number

Returns

the number of (unique) elements in Set.

Methods

[iterator]

[iterator](): IterableIterator<T>
Iterates over values in the set.

Returns IterableIterator<T>

add

add(value): Set<T>
Appends a new element with a specified value to the end of the Set.
Parameters
- value: T
Returns Set<T>

clear

clear(): void
Returns void

delete

delete(value): boolean
Removes a specified value from the Set.
Parameters
- value: T
Returns boolean
Returns true if an element in the Set existed and has been removed, or false if the element does not exist.

entries

entries(): IterableIterator<[T, T]>
Returns an iterable of [v,v] pairs for every value v in the set.

Returns IterableIterator<[T, T]>

forEach

forEach(callbackfn, thisArg?): void
Executes a provided function once per each value in the Set object, in insertion order.
Parameters
- callbackfn: ((value, value2, set) => void)
  - - (value, value2, set): void
    - Parameters
      
      value: T
      
      value2: T
      
      set: Set<T>
      
      Returns void
- Optional thisArg: any
Returns void

has

has(value): boolean
Parameters
- value: T
Returns boolean
a boolean indicating whether an element with the specified value exists in the Set or not.

keys

keys(): IterableIterator<T>
Despite its name, returns an iterable of the values in the set.

Returns IterableIterator<T>

values

values(): IterableIterator<T>
Returns an iterable of values in the set.

Returns IterableIterator<T>