|  | // Copyright 2013 The Flutter Authors. All rights reserved. | 
|  | // Use of this source code is governed by a BSD-style license that can be | 
|  | // found in the LICENSE file. | 
|  |  | 
|  | #ifndef FLUTTER_FML_CONTAINER_H_ | 
|  | #define FLUTTER_FML_CONTAINER_H_ | 
|  |  | 
|  | #include <functional> | 
|  | #include <map> | 
|  |  | 
|  | namespace fml { | 
|  |  | 
|  | template < | 
|  | class Collection = | 
|  | std::unordered_map<class Key, class Value, class Hash, class Equal>> | 
|  | void erase_if(Collection& container, | 
|  | std::function<bool(typename Collection::iterator)> predicate) { | 
|  | auto it = container.begin(); | 
|  | while (it != container.end()) { | 
|  | if (predicate(it)) { | 
|  | it = container.erase(it); | 
|  | continue; | 
|  | } | 
|  | it++; | 
|  | } | 
|  | } | 
|  |  | 
|  | }  // namespace fml | 
|  |  | 
|  | #endif  // FLUTTER_FML_CONTAINER_H_ |