Bump to v3.0.0.

collection/pluck.js

@@ -0,0 +1,31 @@
+var map = require('./map'),
+    property = require('../utility/property');
+
+/**
+ * Gets the value of `key` from all elements in `collection`.
+ *
+ * @static
+ * @memberOf _
+ * @category Collection
+ * @param {Array|Object|string} collection The collection to iterate over.
+ * @param {string} key The key of the property to pluck.
+ * @returns {Array} Returns the property values.
+ * @example
+ *
+ * var users = [
+ *   { 'user': 'barney', 'age': 36 },
+ *   { 'user': 'fred',   'age': 40 }
+ * ];
+ *
+ * _.pluck(users, 'user');
+ * // => ['barney', 'fred']
+ *
+ * var userIndex = _.indexBy(users, 'user');
+ * _.pluck(userIndex, 'age');
+ * // => [36, 40] (iteration order is not guaranteed)
+ */
+function pluck(collection, key) {
+  return map(collection, property(key));
+}
+
+module.exports = pluck;