mirror of
https://github.com/musix-org/musix-oss
synced 2024-12-23 16:13:18 +00:00
38 lines
1.0 KiB
JavaScript
38 lines
1.0 KiB
JavaScript
|
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;
|