8d018e7950
- predicates::always and predicates::never returning true and false, respectively. These simple classes make it easier when writing templated code. As well as unary and binary predicate forms, they also contain a match(std::string) method for compatibility with regex-based classes. STYLE: write bool and direction as primitive 'int' not as 'label'.
113 lines
2.8 KiB
C
113 lines
2.8 KiB
C
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | Copyright (C) 2017 OpenCFD Ltd.
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
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Application
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Test-predicates
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Description
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Simple tests using predicates
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\*---------------------------------------------------------------------------*/
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#include "IOstreams.H"
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#include "labelList.H"
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#include "wordList.H"
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#include "predicates.H"
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#include "FlatOutput.H"
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#include "regExp.H"
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using namespace Foam;
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template<class ListType, class UnaryPredicate>
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label printMatching(const ListType& list, const UnaryPredicate& pred)
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{
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label count = 0;
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Info<< "(";
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for (const auto& val : list)
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{
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if (pred(val))
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{
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if (count) Info<< ' ';
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Info<< val;
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++count;
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}
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}
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Info<< ") => " << count << nl;
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return count;
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}
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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// Main program:
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int main(int argc, char *argv[])
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{
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wordList words
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{
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"abc",
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"def",
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"hij",
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"abc_",
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"def_",
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"hij_",
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};
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labelRange range(-10, 40);
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labelList values(range.begin(), range.end());
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Info<<"words: " << flatOutput(words) << endl;
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Info<<"values: " << flatOutput(values) << endl;
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regExp matcher(".*_.*");
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Info<<"With '_': ";
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printMatching(words, matcher);
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Info<<"All: ";
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printMatching(words, predicates::always());
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Info<<"None: ";
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printMatching(words, predicates::never());
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Info<<"Neg values: ";
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printMatching(values, [](const label v) { return v < 0; });
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Info<<"Even values: ";
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printMatching(values, [](const label v) { return !(v % 2); });
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Info<<"All: ";
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printMatching(values, predicates::always());
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Info<<"None: ";
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printMatching(values, predicates::never());
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return 0;
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}
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// ************************************************************************* //
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