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[yaffs-website] / node_modules / grunt-legacy-util / node_modules / lodash / sampleSize.js

diff --git a/node_modules/grunt-legacy-util/node_modules/lodash/sampleSize.js b/node_modules/grunt-legacy-util/node_modules/lodash/sampleSize.js
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+var baseClamp = require('./_baseClamp'),
+    baseRandom = require('./_baseRandom'),
+    toArray = require('./toArray'),
+    toInteger = require('./toInteger');
+
+/**
+ * Gets `n` random elements at unique keys from `collection` up to the
+ * size of `collection`.
+ *
+ * @static
+ * @memberOf _
+ * @category Collection
+ * @param {Array|Object} collection The collection to sample.
+ * @param {number} [n=0] The number of elements to sample.
+ * @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) {
+  var index = -1,
+      result = toArray(collection),
+      length = result.length,
+      lastIndex = length - 1;
+
+  n = baseClamp(toInteger(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;
+}
+
+module.exports = sampleSize;