55 lines
1.4 KiB
C++
55 lines
1.4 KiB
C++
/*
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* This file is part of libgim.
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*
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* libgim 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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* libgim 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
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* along with libgim. If not, see <http://www.gnu.org/licenses/>.
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*
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* Copyright 2011-2014 Danny Robson <danny@nerdcruft.net>
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*/
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#ifndef __UTIL_TYPES_HPP
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#define __UTIL_TYPES_HPP
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#include <cstdint>
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#include <cstdlib>
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#include <memory>
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#include <stdexcept>
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//-----------------------------------------------------------------------------
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/// Returns the number of elements of a statically allocated array
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template <typename T, size_t N>
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constexpr size_t elems(const T (&)[N])
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{ return N; }
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//-----------------------------------------------------------------------------
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template <class T>
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T
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first (T a) {
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if (a)
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return a;
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throw std::logic_error ("no valid object");
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}
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template <class T, class ...Args>
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T
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first (T a, Args&& ...b) {
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if (a)
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return a;
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return first (std::forward<Args>(b)...);
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}
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#endif
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