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- var arraySampleSize = require('./_arraySampleSize'),
- baseSampleSize = require('./_baseSampleSize'),
- isArray = require('./isArray'),
- isIterateeCall = require('./_isIterateeCall'),
- toInteger = require('./toInteger');
- /**
- * Gets `n` random elements at unique keys from `collection` up to the
- * size of `collection`.
- *
- * @static
- * @memberOf _
- * @since 4.0.0
- * @category Collection
- * @param {Array|Object} collection The collection to sample.
- * @param {number} [n=1] The number of elements to sample.
- * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
- * @returns {Array} Returns the random elements.
- * @example
- *
- * _.sampleSize([1, 2, 3], 2);
- * // => [3, 1]
- *
- * _.sampleSize([1, 2, 3], 4);
- * // => [2, 3, 1]
- */
- function sampleSize(collection, n, guard) {
- if ((guard ? isIterateeCall(collection, n, guard) : n === undefined)) {
- n = 1;
- } else {
- n = toInteger(n);
- }
- var func = isArray(collection) ? arraySampleSize : baseSampleSize;
- return func(collection, n);
- }
- module.exports = sampleSize;
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