03ca52b036
- naming like std::map::try_emplace(), it behaves like emplace_set() if there is no element at the given location otherwise a no-op ENH: reuse existing HashPtrTable 'slot' when setting pointers - avoids extra HashTable operations
128 lines
3.2 KiB
C
128 lines
3.2 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 | www.openfoam.com
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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Copyright (C) 2015 OpenFOAM Foundation
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Copyright (C) 2020 OpenCFD Ltd.
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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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Description
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\*---------------------------------------------------------------------------*/
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#include "OSspecific.H"
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#include "scalar.H"
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#include "IOstreams.H"
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#include "PtrListDictionary.H"
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using namespace Foam;
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class Scalar
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{
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scalar data_;
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public:
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static bool verbose;
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constexpr Scalar() noexcept : data_(0) {}
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Scalar(scalar val) noexcept : data_(val) {}
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~Scalar()
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{
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if (verbose) Info<< "delete Scalar: " << data_ << endl;
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}
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const scalar& value() const noexcept { return data_; }
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scalar& value() noexcept { return data_; }
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autoPtr<Scalar> clone() const { return autoPtr<Scalar>::New(data_); }
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friend Ostream& operator<<(Ostream& os, const Scalar& item)
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{
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os << item.value();
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return os;
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}
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};
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bool Scalar::verbose = true;
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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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PtrListDictionary<Scalar> scalarDict(10);
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forAll(scalarDict, i)
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{
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word key("ent" + name(i));
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scalarDict.set(i, key, new Scalar(1.3*i));
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}
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Info<< nl << "scalarDict1: " << endl;
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forAll(scalarDict, i)
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{
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Info<< "elem " << i << " = " << scalarDict[i] << endl;
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}
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const Scalar* ent8Ptr = scalarDict.lookup("ent8");
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Info<< "ent8 = " << *ent8Ptr << endl;
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PtrListDictionary<Scalar> scalarDict2(15);
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forAll(scalarDict2, i)
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{
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word key("ent" + name(i));
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scalarDict2.set(i, key, new Scalar(1.3*i));
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}
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Info<< nl << "scalarDict2: " << endl;
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forAll(scalarDict2, i)
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{
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Info<< "elem " << i << " = " << scalarDict2[i] << endl;
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}
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scalarDict.transfer(scalarDict2);
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const Scalar* p = scalarDict.cfind("ent8");
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if (p)
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{
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Info<< "found: " << *p << endl;
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}
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else
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{
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Info<< "no p: " << endl;
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}
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scalarDict.clear();
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Info<< nl << "Done." << endl;
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return 0;
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}
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// ************************************************************************* //
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