31 lines
1,013 B
JavaScript
31 lines
1,013 B
JavaScript
var baseIteratee = require('./_baseIteratee'),
|
|
baseUniq = require('./_baseUniq');
|
|
|
|
/**
|
|
* This method is like `_.uniq` except that it accepts `iteratee` which is
|
|
* invoked for each element in `array` to generate the criterion by which
|
|
* uniqueness is computed. The order of result values is determined by the
|
|
* order they occur in the array. The iteratee is invoked with one argument:
|
|
* (value).
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @since 4.0.0
|
|
* @category Array
|
|
* @param {Array} array The array to inspect.
|
|
* @param {Function} [iteratee=_.identity] The iteratee invoked per element.
|
|
* @returns {Array} Returns the new duplicate free array.
|
|
* @example
|
|
*
|
|
* _.uniqBy([2.1, 1.2, 2.3], Math.floor);
|
|
* // => [2.1, 1.2]
|
|
*
|
|
* // The `_.property` iteratee shorthand.
|
|
* _.uniqBy([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x');
|
|
* // => [{ 'x': 1 }, { 'x': 2 }]
|
|
*/
|
|
function uniqBy(array, iteratee) {
|
|
return (array && array.length) ? baseUniq(array, baseIteratee(iteratee, 2)) : [];
|
|
}
|
|
|
|
module.exports = uniqBy;
|