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uniqBy

Returns a new array containing only the unique elements from the original array, based on the values returned by the mapper function.

Signature

typescript
function uniqBy<T, U>(arr: T[], mapper: (item: T) => U): T[];

Parameters

  • arr (T[]): The array to process.
  • mapper ((item: T) => U): The function used to convert the array elements.

Returns

(T[]): A new array containing only the unique elements from the original array, based on the values returned by the mapper function.

Examples

typescript
uniqBy([1.2, 1.5, 2.1, 3.2, 5.7, 5.3, 7.19], Math.floor);
// [1.2, 2.1, 3.3, 5.7, 7.19]

Released under the MIT License.