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.