1  var arrayEach = require('./_arrayEach'),
 2      baseEach = require('./_baseEach'),
 3      castFunction = require('./_castFunction'),
 4      isArray = require('./isArray');
 5  
 6  /**
 7   * Iterates over elements of `collection` and invokes `iteratee` for each element.
 8   * The iteratee is invoked with three arguments: (value, index|key, collection).
 9   * Iteratee functions may exit iteration early by explicitly returning `false`.
10   *
11   * **Note:** As with other "Collections" methods, objects with a "length"
12   * property are iterated like arrays. To avoid this behavior use `_.forIn`
13   * or `_.forOwn` for object iteration.
14   *
15   * @static
16   * @memberOf _
17   * @since 0.1.0
18   * @alias each
19   * @category Collection
20   * @param {Array|Object} collection The collection to iterate over.
21   * @param {Function} [iteratee=_.identity] The function invoked per iteration.
22   * @returns {Array|Object} Returns `collection`.
23   * @see _.forEachRight
24   * @example
25   *
26   * _.forEach([1, 2], function(value) {
27   *   console.log(value);
28   * });
29   * // => Logs `1` then `2`.
30   *
31   * _.forEach({ 'a': 1, 'b': 2 }, function(value, key) {
32   *   console.log(key);
33   * });
34   * // => Logs 'a' then 'b' (iteration order is not guaranteed).
35   */
36  function forEach(collection, iteratee) {
37    var func = isArray(collection) ? arrayEach : baseEach;
38    return func(collection, castFunction(iteratee));
39  }
40  
41  module.exports = forEach;