Sha256: 607d4afd0fe712836438b7787747c4ae9d64e3bb174c29b84428fa6d393cfa4b
Contents?: true
Size: 802 Bytes
Versions: 69
Compression:
Stored size: 802 Bytes
Contents
var randInt = require('../random/randInt');
/**
* Remove random item(s) from the Array and return it.
* Returns an Array of items if [nItems] is provided or a single item if
* it isn't specified.
*/
function pick(arr, nItems){
if (nItems != null) {
var result = [];
if (nItems > 0 && arr && arr.length) {
nItems = nItems > arr.length? arr.length : nItems;
while (nItems--) {
result.push( pickOne(arr) );
}
}
return result;
}
return (arr && arr.length)? pickOne(arr) : void(0);
}
function pickOne(arr){
var idx = randInt(0, arr.length - 1);
return arr.splice(idx, 1)[0];
}
module.exports = pick;
Version data entries
69 entries across 69 versions & 2 rubygems