1var baseFor = require('./_baseFor'),
2    castFunction = require('./_castFunction'),
3    keysIn = require('./keysIn');
4
5/**
6 * Iterates over own and inherited enumerable string keyed properties of an
7 * object and invokes `iteratee` for each property. The iteratee is invoked
8 * with three arguments: (value, key, object). Iteratee functions may exit
9 * iteration early by explicitly returning `false`.
10 *
11 * @static
12 * @memberOf _
13 * @since 0.3.0
14 * @category Object
15 * @param {Object} object The object to iterate over.
16 * @param {Function} [iteratee=_.identity] The function invoked per iteration.
17 * @returns {Object} Returns `object`.
18 * @see _.forInRight
19 * @example
20 *
21 * function Foo() {
22 *   this.a = 1;
23 *   this.b = 2;
24 * }
25 *
26 * Foo.prototype.c = 3;
27 *
28 * _.forIn(new Foo, function(value, key) {
29 *   console.log(key);
30 * });
31 * // => Logs 'a', 'b', then 'c' (iteration order is not guaranteed).
32 */
33function forIn(object, iteratee) {
34  return object == null
35    ? object
36    : baseFor(object, castFunction(iteratee), keysIn);
37}
38
39module.exports = forIn;
40