1 // Copyright (C) 2011 The Libphonenumber Authors 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> operatorOrderByFirst24 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> STLDeleteContainerPairSecondPointers(const ForwardIterator & begin,const ForwardIterator & end)32void STLDeleteContainerPairSecondPointers(const ForwardIterator& begin, 33 const ForwardIterator& end) { 34 for (ForwardIterator it = begin; it != end; ++it) { 35 delete it->second; 36 } 37 } 38 39 // Deletes the pointers contained in the provided container. 40 template <typename T> STLDeleteElements(T * container)41void STLDeleteElements(T* container) { 42 for (typename T::iterator it = container->begin(); it != container->end(); 43 ++it) { 44 delete *it; 45 } 46 } 47 48 } // namespace phonenumbers 49 } // namespace i18n 50 51 #endif // I18N_PHONENUMBERS_STL_UTIL_H_ 52