import arrayFilter from './internal/arrayFilter';

import baseFilter from './internal/baseFilter';

import baseIteratee from './internal/baseIteratee';

import isArray from './isArray';

/**

* Iterates over elements of `collection`, returning an array of all elements

* `predicate` returns truthy for. The predicate is invoked with three arguments:

* (value, index|key, collection).

*

* @static

* @memberOf _

* @category Collection

* @param {Array|Object} collection The collection to iterate over.

* @param {Function|Object|string} [predicate=_.identity] The function invoked per iteration.

* @returns {Array} Returns the new filtered array.

* @example

*

* var users = [

* { 'user': 'barney', 'age': 36, 'active': true },

* { 'user': 'fred', 'age': 40, 'active': false }

* ];

*

* _.filter(users, function(o) { return !o.active; });

* // => objects for ['fred']

*

* // using the `_.matches` iteratee shorthand

* _.filter(users, { 'age': 36, 'active': true });

* // => objects for ['barney']

*

* // using the `_.matchesProperty` iteratee shorthand

* _.filter(users, ['active', false]);

* // => objects for ['fred']

*

* // using the `_.property` iteratee shorthand

* _.filter(users, 'active');

* // => objects for ['barney']

*/

function filter(collection, predicate) {

var func = isArray(collection) ? arrayFilter : baseFilter;

return func(collection, baseIteratee(predicate, 3));

}

export default filter;