unzipWith (Functional Programming)

Creates a function that regroups zipped arrays and combines each position. Use it with pipe.

typescript

const result = pipe(array, unzipWith(iteratee));

::: info

Prefer the original es-toolkit unzipWith in ordinary code. Use this fp variant when composing transformations with pipe.

:::

Usage

unzipWith collects values at the same position from grouped rows, calls iteratee with those values, and returns the results.

typescript

import { pipe, unzipWith } from 'es-toolkit/fp';

pipe(
  [
    [1, 10],
    [2, 20],
  ],
  unzipWith((a, b) => a + b)
); // => [3, 30]

iteratee ((...args: T[]) => R): The function that combines values from the same position.

((target: readonly T[][]) => R[]): A function that maps zipped rows to combined values by position.