Interface MapConstructor

constructor

• new MapConstructor(): Map<any, any>

• Returns Map<any, any>

• new MapConstructor<K, V>(entries?: readonly (readonly [K, V])[]): Map<K, V>

• Type Parameters

  • K
  • V

  Parameters

  • Optionalentries: readonly (readonly [K, V])[]

  Returns Map<K, V>

• new MapConstructor(): Map<any, any>

• Returns Map<any, any>

• new MapConstructor<K, V>(iterable?: Iterable<readonly [K, V]>): Map<K, V>

• Type Parameters

  • K
  • V

  Parameters

  • Optionaliterable: Iterable<readonly [K, V]>

  Returns Map<K, V>

Readonly[species]

Readonlyprototype

groupBy

• groupBy<K, T>(
      items: Iterable<T>,
      keySelector: (item: T, index: number) => K,
  ): Map<K, T[]>

• Groups members of an iterable according to the return value of the passed callback.

  Type Parameters

  • K
  • T

  Parameters

  • items: Iterable<T>

    An iterable.
  • keySelector: (item: T, index: number) => K

    A callback which will be invoked for each item in items.

  Returns Map<K, T[]>