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 18namespace i18n { 19namespace phonenumbers { 20 21// Compares the first attribute of two pairs. 22struct 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. 31template <typename ForwardIterator> 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. 40template <typename T> 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