1var baseClone = require('./_baseClone'),
2    baseIteratee = require('./_baseIteratee');
3
4/** Used to compose bitmasks for cloning. */
5var CLONE_DEEP_FLAG = 1;
6
7/**
8 * Creates a function that invokes `func` with the arguments of the created
9 * function. If `func` is a property name, the created function returns the
10 * property value for a given element. If `func` is an array or object, the
11 * created function returns `true` for elements that contain the equivalent
12 * source properties, otherwise it returns `false`.
13 *
14 * @static
15 * @since 4.0.0
16 * @memberOf _
17 * @category Util
18 * @param {*} [func=_.identity] The value to convert to a callback.
19 * @returns {Function} Returns the callback.
20 * @example
21 *
22 * var users = [
23 *   { 'user': 'barney', 'age': 36, 'active': true },
24 *   { 'user': 'fred',   'age': 40, 'active': false }
25 * ];
26 *
27 * // The `_.matches` iteratee shorthand.
28 * _.filter(users, _.iteratee({ 'user': 'barney', 'active': true }));
29 * // => [{ 'user': 'barney', 'age': 36, 'active': true }]
30 *
31 * // The `_.matchesProperty` iteratee shorthand.
32 * _.filter(users, _.iteratee(['user', 'fred']));
33 * // => [{ 'user': 'fred', 'age': 40 }]
34 *
35 * // The `_.property` iteratee shorthand.
36 * _.map(users, _.iteratee('user'));
37 * // => ['barney', 'fred']
38 *
39 * // Create custom iteratee shorthands.
40 * _.iteratee = _.wrap(_.iteratee, function(iteratee, func) {
41 *   return !_.isRegExp(func) ? iteratee(func) : function(string) {
42 *     return func.test(string);
43 *   };
44 * });
45 *
46 * _.filter(['abc', 'def'], /ef/);
47 * // => ['def']
48 */
49function iteratee(func) {
50  return baseIteratee(typeof func == 'function' ? func : baseClone(func, CLONE_DEEP_FLAG));
51}
52
53module.exports = iteratee;
54