1 var arraySampleSize = require('./_arraySampleSize'),
2 baseSampleSize = require('./_baseSampleSize'),
3 isArray = require('./isArray'),
4 isIterateeCall = require('./_isIterateeCall'),
5 toInteger = require('./toInteger');
8 * Gets `n` random elements at unique keys from `collection` up to the
9 * size of `collection`.
14 * @category Collection
15 * @param {Array|Object} collection The collection to sample.
16 * @param {number} [n=1] The number of elements to sample.
17 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
18 * @returns {Array} Returns the random elements.
21 * _.sampleSize([1, 2, 3], 2);
24 * _.sampleSize([1, 2, 3], 4);
27 function sampleSize(collection, n, guard) {
28 if ((guard ? isIterateeCall(collection, n, guard) : n === undefined)) {
33 var func = isArray(collection) ? arraySampleSize : baseSampleSize;
34 return func(collection, n);
37 module.exports = sampleSize;