mirror of
https://github.com/triqs/dft_tools
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70 lines
2.2 KiB
C++
70 lines
2.2 KiB
C++
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/*******************************************************************************
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*
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* TRIQS: a Toolbox for Research in Interacting Quantum Systems
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*
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* Copyright (C) 2013 by O. Parcollet
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*
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* TRIQS is free software: you can redistribute it and/or modify it under the
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* terms of the GNU General Public License as published by the Free Software
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* Foundation, either version 3 of the License, or (at your option) any later
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* version.
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*
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* TRIQS is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* TRIQS. If not, see <http://www.gnu.org/licenses/>.
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*
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******************************************************************************/
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#include <triqs/utility/dressed_iterator.hpp>
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#include <iostream>
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#include <map>
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using namespace triqs::utility;
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struct S {
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typedef std::map<double, int> m_t;
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typedef m_t::const_iterator mcit_t;
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typedef m_t::iterator mit_t;
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m_t m;
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struct _cdress {double const & tau; int const & a; m_t const * m; _cdress( mcit_t const & it, m_t const * mm): tau(it->first), a(it->second),m(mm){} };
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// const iterator with cyclic condition
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struct const_iterator : public dressed_iterator< mcit_t,_cdress, m_t const> {
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const_iterator (mcit_t it, m_t const * m): dressed_iterator<mcit_t,_cdress, m_t const>(it,m) {}
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friend const_iterator next_cyclic(const_iterator it) {
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++it;
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if (it.get() == it.get_aux()->end()) return const_iterator(it.get_aux()->begin(),it.get_aux());
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else return it;
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}
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};
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const_iterator begin() const { return const_iterator(m.begin(),&m);}
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const_iterator end() const { return const_iterator(m.end(),&m);}
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};
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int main() {
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S s;
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s.m.insert(std::make_pair(8.4,2));
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s.m.insert(std::make_pair(1.3,1));
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for (auto const & p : s) std::cout << p.tau << " -- "<< p.a << std::endl;
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//for (auto const & p : s.m) std::cout << p.first << " -- "<< p.second << std::endl;
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auto it = s.begin();
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std::cout << it->tau << std::endl ;
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++it;
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std::cout << it->tau << std::endl ;
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it = next_cyclic(it);
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std::cout << it->tau << std::endl ;
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}
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