39 lines
1.3 KiB
JavaScript
39 lines
1.3 KiB
JavaScript
var arrayFilter = require('./_arrayFilter'),
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baseIteratee = require('./_baseIteratee'),
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baseRest = require('./_baseRest'),
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baseXor = require('./_baseXor'),
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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 `_.xor` except that it accepts `iteratee` which is
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* invoked for each element of each `arrays` to generate the criterion by
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* which by which they're compared. The order of result values is determined
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* by the order they occur in the arrays. The iteratee is invoked with one
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* argument: (value).
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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} [arrays] The arrays to inspect.
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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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* _.xorBy([2.1, 1.2], [2.3, 3.4], Math.floor);
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* // => [1.2, 3.4]
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*
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* // The `_.property` iteratee shorthand.
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* _.xorBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');
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* // => [{ 'x': 2 }]
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*/
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var xorBy = baseRest(function(arrays) {
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var iteratee = last(arrays);
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if (isArrayLikeObject(iteratee)) {
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iteratee = undefined;
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}
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return baseXor(arrayFilter(arrays, isArrayLikeObject), baseIteratee(iteratee, 2));
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});
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module.exports = xorBy;
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