xor (Functional Programming)

Creates a function that returns values that appear in exactly one of two arrays. Use it with pipe.

const result = pipe(array, xor(secondArray));

::: info

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

:::

Usage

xor returns the symmetric difference of the piped array and secondArray, without duplicate values.

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

pipe([1, 2, 3], xor([2, 3, 4])); // => [1, 4]

Parameters

• secondArray (readonly T[]): The array to compare with the piped array.

Returns

((array: readonly T[]) => T[]): A function that maps a readonly T[] to the symmetric difference.