45 lines
1.5 KiB
JavaScript
45 lines
1.5 KiB
JavaScript
var baseDifference = require('./_baseDifference'),
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baseFlatten = require('./_baseFlatten'),
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baseIteratee = require('./_baseIteratee'),
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baseRest = require('./_baseRest'),
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isArrayLikeObject = require('./isArrayLikeObject'),
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last = require('./last');
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/**
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* This method is like `_.difference` except that it accepts `iteratee` which
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* is invoked for each element of `array` and `values` to generate the criterion
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* by which they're compared. The order and references of result values are
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* determined by the first array. The iteratee is invoked with one argument:
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* (value).
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*
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* **Note:** Unlike `_.pullAllBy`, this method returns a new array.
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*
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* @static
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* @memberOf _
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* @since 4.0.0
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* @category Array
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* @param {Array} array The array to inspect.
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* @param {...Array} [values] The values to exclude.
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* @param {Function} [iteratee=_.identity] The iteratee invoked per element.
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* @returns {Array} Returns the new array of filtered values.
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* @example
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*
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* _.differenceBy([2.1, 1.2], [2.3, 3.4], Math.floor);
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* // => [1.2]
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*
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* // The `_.property` iteratee shorthand.
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* _.differenceBy([{ 'x': 2 }, { 'x': 1 }], [{ 'x': 1 }], 'x');
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* // => [{ 'x': 2 }]
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*/
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var differenceBy = baseRest(function(array, values) {
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var iteratee = last(values);
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if (isArrayLikeObject(iteratee)) {
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iteratee = undefined;
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}
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return isArrayLikeObject(array)
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? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), baseIteratee(iteratee, 2))
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: [];
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});
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module.exports = differenceBy;
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