1925d4dcc6
649fde1e8 typelist: Add drop 5efe868da travis: Drop GCC 7 from CI c3f890f17 Update to use new metavalue types c4dd1c9b9 metavalue: Add some common operations 7da45c71b Remove unnecessary public keyword for struct inheritance 287d8e7ec Correct typos in file headers git-subtree-dir: externals/mp git-subtree-split: 649fde1e814f9ce5b04d7ddeb940244d9f63cb2f
21 lines
562 B
C++
21 lines
562 B
C++
/* This file is part of the mp project.
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* Copyright (c) 2020 MerryMage
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* SPDX-License-Identifier: 0BSD
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*/
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#pragma once
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#include <type_traits>
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#include <mp/metavalue/value.h>
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namespace mp {
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/// Conditionally select between types T and F based on boolean metavalue V
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template<class V, class T, class F>
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using logic_if = std::conditional_t<bool(V::value), T, F>;
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/// Conditionally select between metavalues T and F based on boolean metavalue V
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template<class V, class TV, class FV>
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constexpr auto logic_if_v = logic_if<V, TV, FV>::value;
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} // namespace mp
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