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							37 lines
						
					
					
						
							1.0 KiB
						
					
					
				| 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;
 | |
| 
 |