time-to-botec

Benchmark sampling in different programming languages
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intersection.js (953B)

      1 var arrayMap = require('./_arrayMap'),
      2     baseIntersection = require('./_baseIntersection'),
      3     baseRest = require('./_baseRest'),
      4     castArrayLikeObject = require('./_castArrayLikeObject');
      5 
      6 /**
      7  * Creates an array of unique values that are included in all given arrays
      8  * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
      9  * for equality comparisons. The order and references of result values are
     10  * determined by the first array.
     11  *
     12  * @static
     13  * @memberOf _
     14  * @since 0.1.0
     15  * @category Array
     16  * @param {...Array} [arrays] The arrays to inspect.
     17  * @returns {Array} Returns the new array of intersecting values.
     18  * @example
     19  *
     20  * _.intersection([2, 1], [2, 3]);
     21  * // => [2]
     22  */
     23 var intersection = baseRest(function(arrays) {
     24   var mapped = arrayMap(arrays, castArrayLikeObject);
     25   return (mapped.length && mapped[0] === arrays[0])
     26     ? baseIntersection(mapped)
     27     : [];
     28 });
     29 
     30 module.exports = intersection;