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Bump to v3.9.2.

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This commit is contained in:
John-David Dalton
2015-12-16 17:51:09 -08:00
parent 81e41ca0c8
commit d2754e0b9b
23 changed files with 167 additions and 91 deletions
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18
collection/sample.js
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@@ -1,4 +1,4 @@
define(['../internal/baseRandom', '../internal/isIterateeCall', './shuffle', '../internal/toIterable'], function(baseRandom, isIterateeCall, shuffle, toIterable) {
define(['../internal/baseRandom', '../internal/isIterateeCall', '../lang/toArray', '../internal/toIterable'], function(baseRandom, isIterateeCall, toArray, toIterable) {
/** Used as a safe reference for `undefined` in pre-ES5 environments. */
var undefined;
@@ -30,8 +30,20 @@ define(['../internal/baseRandom', '../internal/isIterateeCall', './shuffle', '..
var length = collection.length;
return length > 0 ? collection[baseRandom(0, length - 1)] : undefined;
}
var result = shuffle(collection);
result.length = nativeMin(n < 0 ? 0 : (+n || 0), result.length);
var index = -1,
result = toArray(collection),
length = result.length,
lastIndex = length - 1;
n = nativeMin(n < 0 ? 0 : (+n || 0), length);
while (++index < n) {
var rand = baseRandom(index, lastIndex),
value = result[rand];
result[rand] = result[index];
result[index] = value;
}
result.length = n;
return result;
}

20
collection/shuffle.js
View File

@@ -1,4 +1,7 @@
define(['../internal/baseRandom', '../internal/toIterable'], function(baseRandom, toIterable) {
define(['./sample'], function(sample) {
/** Used as references for `-Infinity` and `Infinity`. */
var POSITIVE_INFINITY = Number.POSITIVE_INFINITY;
/**
* Creates an array of shuffled values, using a version of the
@@ -15,20 +18,7 @@ define(['../internal/baseRandom', '../internal/toIterable'], function(baseRandom
* // => [4, 1, 3, 2]
*/
function shuffle(collection) {
collection = toIterable(collection);
var index = -1,
length = collection.length,
result = Array(length);
while (++index < length) {
var rand = baseRandom(0, index);
if (index != rand) {
result[index] = result[rand];
}
result[rand] = collection[index];
}
return result;
return sample(collection, POSITIVE_INFINITY);
}
return shuffle;