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es-toolkit/docs/reference/array/xorWith.md
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xorWith

Computes the symmetric difference between two arrays using a custom equality function. The symmetric difference is the set of elements which are in either of the arrays, but not in their intersection.

Signature

function xorWith<T>(arr1: T[], arr2: T[], areElementsEqual: (item1: T, item2: T) => boolean): T[];

Parameters

  • arr1 (T[]): The first array.
  • arr2 (T[]): The second array.
  • areElementsEqual ((item1: T, item2: T) => boolean): The custom equality function to compare elements.

Returns

(T[]): An array containing the elements that are present in either arr1 or arr2 but not in both, based on the custom equality function.

Examples

// Returns [{ id: 1 }, { id: 3 }]
xorWith([{ id: 1 }, { id: 2 }], [{ id: 2 }, { id: 3 }], (a, b) => a.id === b.id);