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1 // Copyright (C) 2011 Google Inc. | |
2 // | |
3 // Licensed under the Apache License, Version 2.0 (the "License"); | |
4 // you may not use this file except in compliance with the License. | |
5 // You may obtain a copy of the License at | |
6 // | |
7 // http://www.apache.org/licenses/LICENSE-2.0 | |
8 // | |
9 // Unless required by applicable law or agreed to in writing, software | |
10 // distributed under the License is distributed on an "AS IS" BASIS, | |
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
12 // See the License for the specific language governing permissions and | |
13 // limitations under the License. | |
14 | |
15 #ifndef I18N_PHONENUMBERS_STL_UTIL_H_ | |
16 #define I18N_PHONENUMBERS_STL_UTIL_H_ | |
17 | |
18 namespace i18n { | |
19 namespace phonenumbers { | |
20 | |
21 // Compares the first attribute of two pairs. | |
22 struct OrderByFirst { | |
23 template <typename T> | |
24 bool operator()(const T& p1, const T& p2) const { | |
25 return p1.first < p2.first; | |
26 } | |
27 }; | |
28 | |
29 // Deletes the second attribute (pointer type expected) of the pairs contained | |
30 // in the provided range. | |
31 template <typename ForwardIterator> | |
32 void STLDeleteContainerPairSecondPointers(const ForwardIterator& begin, | |
33 const ForwardIterator& end) { | |
34 for (ForwardIterator it = begin; it != end; ++it) { | |
35 delete it->second; | |
36 } | |
37 } | |
38 | |
39 } // namespace phonenumbers | |
40 } // namespace i18n | |
41 | |
42 #endif // I18N_PHONENUMBERS_STL_UTIL_H_ | |
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