mirror of
https://github.com/triqs/dft_tools
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38 lines
1.3 KiB
C++
38 lines
1.3 KiB
C++
/*******************************************************************************
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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) 2014 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/buffered_function.hpp>
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#include <iostream>
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int main(int argc, char **argv) {
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// a function that generates all the square ....
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int x = 0;
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auto f = [x]() mutable { auto res=x*x; x++; return res; };
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// C++14 : init-capture
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// auto f = [x=0]() mutable { return x*(x++);};
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auto gen = triqs::utility::buffered_function<double>(f, 5);
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for (int u = 0; u < 22; ++u)
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if (gen() != u * u) throw "Error";
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}
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