Mirrors/lodash
1
0
Fork 0
mirror of https://github.com/whoisclebs/lodash.git synced 2026-02-01 07:47:49 +00:00
Code Issues Packages Projects Releases Wiki Activity

Bump to v4.8.0.

Browse Source
This commit is contained in:
John-David Dalton
2016-04-01 23:28:00 -07:00
parent 18d0f1d873
commit ee6ec2f672
385 changed files with 2374 additions and 1044 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
sampleSize.js
View File

@@ -1,5 +1,6 @@
var baseClamp = require('./_baseClamp'),
baseRandom = require('./_baseRandom'),
isIterateeCall = require('./_isIterateeCall'),
toArray = require('./toArray'),
toInteger = require('./toInteger');
@@ -12,7 +13,8 @@ var baseClamp = require('./_baseClamp'),
* @since 4.0.0
* @category Collection
* @param {Array|Object} collection The collection to sample.
* @param {number} [n=0] The number of elements 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
*
@@ -22,13 +24,17 @@ var baseClamp = require('./_baseClamp'),
* _.sampleSize([1, 2, 3], 4);
* // => [2, 3, 1]
*/
function sampleSize(collection, n) {
function sampleSize(collection, n, guard) {
var index = -1,
result = toArray(collection),
length = result.length,
lastIndex = length - 1;
n = baseClamp(toInteger(n), 0, length);
if ((guard ? isIterateeCall(collection, n, guard) : n === undefined)) {
n = 1;
} else {
n = baseClamp(toInteger(n), 0, length);
}
while (++index < n) {
var rand = baseRandom(index, lastIndex),
value = result[rand];