1
|
var arrayMap = require('./_arrayMap'),
|
2
|
baseIntersection = require('./_baseIntersection'),
|
3
|
baseRest = require('./_baseRest'),
|
4
|
castArrayLikeObject = require('./_castArrayLikeObject'),
|
5
|
last = require('./last');
|
6
|
|
7
|
/**
|
8
|
* This method is like `_.intersection` except that it accepts `comparator`
|
9
|
* which is invoked to compare elements of `arrays`. The order and references
|
10
|
* of result values are determined by the first array. The comparator is
|
11
|
* invoked with two arguments: (arrVal, othVal).
|
12
|
*
|
13
|
* @static
|
14
|
* @memberOf _
|
15
|
* @since 4.0.0
|
16
|
* @category Array
|
17
|
* @param {...Array} [arrays] The arrays to inspect.
|
18
|
* @param {Function} [comparator] The comparator invoked per element.
|
19
|
* @returns {Array} Returns the new array of intersecting values.
|
20
|
* @example
|
21
|
*
|
22
|
* var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
|
23
|
* var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];
|
24
|
*
|
25
|
* _.intersectionWith(objects, others, _.isEqual);
|
26
|
* // => [{ 'x': 1, 'y': 2 }]
|
27
|
*/
|
28
|
var intersectionWith = baseRest(function(arrays) {
|
29
|
var comparator = last(arrays),
|
30
|
mapped = arrayMap(arrays, castArrayLikeObject);
|
31
|
|
32
|
comparator = typeof comparator == 'function' ? comparator : undefined;
|
33
|
if (comparator) {
|
34
|
mapped.pop();
|
35
|
}
|
36
|
return (mapped.length && mapped[0] === arrays[0])
|
37
|
? baseIntersection(mapped, undefined, comparator)
|
38
|
: [];
|
39
|
});
|
40
|
|
41
|
module.exports = intersectionWith;
|