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comparator.hh

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00001 // Copyright (C) 2003, 2004, 2005 Laboratoire de Recherche en Informatique
00002 
00003 // This file is part of Qolyester.
00004 
00005 // Qolyester is free software; you can redistribute it and/or
00006 // modify it under the terms of the GNU General Public License
00007 // as published by the Free Software Foundation; either version 2
00008 // of the License, or (at your option) any later version.
00009 
00010 // Qolyester is distributed in the hope that it will be useful,
00011 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00012 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00013 // GNU General Public License for more details.
00014 
00015 // You should have received a copy of the GNU General Public License
00016 // along with this program; if not, write to the Free Software
00017 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
00018 
00019 #ifndef QOLYESTER_UTL_COMPARATOR_HH
00020 # define QOLYESTER_UTL_COMPARATOR_HH 1
00021 
00022 # include <iterator>
00023 
00024 namespace olsr {
00025 
00026   namespace utl {
00027 
00028     template <typename T, class Compare = std::less<T> >
00029     struct pless {
00030       bool operator()(const T* const a, const T* const b) const {
00031         return Compare()(*a, *b);
00032       }
00033     };
00034 
00035     template <typename T, class Equal = std::equal_to<T> >
00036     struct pequal_to {
00037       bool operator()(const T* const a, const T* const b) const {
00038         return Equal()(*a, *b);
00039       }
00040     };
00041 
00042     template <class Iter,
00043               class Compare = 
00044               std::less<typename std::iterator_traits<Iter>::value_type> >
00045     struct iless {
00046       bool operator()(const Iter& a, const Iter& b) const {
00047         return Compare()(*a, *b);
00048       }
00049     };
00050 
00051     template <class Iter,
00052               class Equal =
00053               std::equal_to<typename std::iterator_traits<Iter>::value_type> >
00054     struct iequal_to {
00055       bool operator()(const Iter& a, const Iter& b) const {
00056         return Equal()(*a, *b);
00057       }
00058     };
00059 
00060 
00061   } // namespace utl
00062 
00063 } // namespace olsr
00064 
00065 #endif // ! QOLYESTER_UTL_COMPARATOR_HH

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