You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
42 lines
1.4 KiB
42 lines
1.4 KiB
4 weeks ago
|
var arrayMap = require('./_arrayMap'),
|
||
|
|
baseIntersection = require('./_baseIntersection'),
|
||
|
|
baseRest = require('./_baseRest'),
|
||
|
|
castArrayLikeObject = require('./_castArrayLikeObject'),
|
||
|
|
last = require('./last');
|
||
|
|
|
||
|
|
/**
|
||
|
|
* This method is like `_.intersection` except that it accepts `comparator`
|
||
|
|
* which is invoked to compare elements of `arrays`. The order and references
|
||
|
|
* of result values are determined by the first array. The comparator is
|
||
|
|
* invoked with two arguments: (arrVal, othVal).
|
||
|
|
*
|
||
|
|
* @static
|
||
|
|
* @memberOf _
|
||
|
|
* @since 4.0.0
|
||
|
|
* @category Array
|
||
|
|
* @param {...Array} [arrays] The arrays to inspect.
|
||
|
|
* @param {Function} [comparator] The comparator invoked per element.
|
||
|
|
* @returns {Array} Returns the new array of intersecting values.
|
||
|
|
* @example
|
||
|
|
*
|
||
|
|
* var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
|
||
|
|
* var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];
|
||
|
|
*
|
||
|
|
* _.intersectionWith(objects, others, _.isEqual);
|
||
|
|
* // => [{ 'x': 1, 'y': 2 }]
|
||
|
|
*/
|
||
|
|
var intersectionWith = baseRest(function(arrays) {
|
||
|
|
var comparator = last(arrays),
|
||
|
|
mapped = arrayMap(arrays, castArrayLikeObject);
|
||
|
|
|
||
|
|
comparator = typeof comparator == 'function' ? comparator : undefined;
|
||
|
|
if (comparator) {
|
||
|
|
mapped.pop();
|
||
|
|
}
|
||
|
|
return (mapped.length && mapped[0] === arrays[0])
|
||
|
|
? baseIntersection(mapped, undefined, comparator)
|
||
|
|
: [];
|
||
|
|
});
|
||
|
|
|
||
|
|
module.exports = intersectionWith;
|