Function reduceWithIndex

reduceWithIndex<T, U>(accumulator: ((acc: T, next: U, index: number) => T), initial: T): ((arr: readonly U[]) => T)

Example

import * as A from "flurp/array";

const addEvenIndexed = A.reduceWithIndex(
      (acc: number, next: number, index: number) =>
        acc + (N.isEven(index) ? next : 0),
      10
    );
addEvenIndexed([1, 4, 6, 7, 3]);    // 10

Type Parameters

Parameters

accumulator: ((acc: T, next: U, index: number) => T)
- - (acc: T, next: U, index: number): T
  - Parameters
    - acc: T
    - next: U
    - index: number
    Returns T
initial: T

Returns ((arr: readonly U[]) => T)

- (arr: readonly U[]): T
- Parameters
  - arr: readonly U[]
  Returns T

Function reduceWithIndex

Example

Type Parameters

T

U

Parameters

accumulator: ((acc: T, next: U, index: number) => T)

Parameters

acc: T

next: U

index: number

Returns T

initial: T

Returns ((arr: readonly U[]) => T)

Parameters

arr: readonly U[]

Returns T

Settings

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