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 namespace gtl { 22 // Compares the first attribute of two pairs. 23 struct OrderByFirst { 24 template <typename T> operatorOrderByFirst25 bool operator()(const T& p1, const T& p2) const { 26 return p1.first < p2.first; 27 } 28 }; 29 30 // Deletes the second attribute (pointer type expected) of the pairs contained 31 // in the provided range. 32 template <typename ForwardIterator> STLDeleteContainerPairSecondPointers(const ForwardIterator & begin,const ForwardIterator & end)33void STLDeleteContainerPairSecondPointers(const ForwardIterator& begin, 34 const ForwardIterator& end) { 35 for (ForwardIterator it = begin; it != end; ++it) { 36 delete it->second; 37 } 38 } 39 40 // Deletes the pointers contained in the provided container. 41 template <typename T> STLDeleteElements(T * container)42void STLDeleteElements(T* container) { 43 for (typename T::iterator it = container->begin(); it != container->end(); 44 ++it) { 45 delete *it; 46 } 47 } 48 } // namespace gtl 49 } // namespace phonenumbers 50 } // namespace i18n 51 52 #endif // I18N_PHONENUMBERS_STL_UTIL_H_ 53