DUNE
Distributed and Unified Numerics Environment
DUNE PDELab (git)
dune
common
std
functional.hh
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// -*- tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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// vi: set ts=8 sw=2 et sts=2:
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// SPDX-FileCopyrightInfo: Copyright © DUNE Project contributors, see file LICENSE.md in module root
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// SPDX-License-Identifier: LicenseRef-GPL-2.0-only-with-DUNE-exception
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#ifndef DUNE_COMMON_STD_FUNCTIONAL_HH
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#define DUNE_COMMON_STD_FUNCTIONAL_HH
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#include <functional>
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#include <dune-common-config.hh>
// DUNE_HAVE_CXX_STD_IDENTITY
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namespace
Dune
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{
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namespace
Std
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{
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#if DUNE_HAVE_CXX_STD_IDENTITY
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using
std::identity;
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#else
//DUNE_HAVE_CXX_STD_IDENTITY
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struct
identity
{
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template
<
class
T>
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constexpr
T&& operator()(T&& t )
const
noexcept
{
return
std::forward<T>(t);}
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};
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#endif
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}
// namespace Std
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}
// namespace Dune
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#endif
// #ifndef DUNE_COMMON_STD_FUNCTIONAL_HH
Dune
Dune namespace.
Definition:
alignedallocator.hh:13
Dune::Std::identity
A function object type whose operator() returns its argument unchanged.
Definition:
functional.hh:27
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