36 lines
1.0 KiB
C++
36 lines
1.0 KiB
C++
/*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Copyright 2017 Danny Robson <danny@nerdcruft.net>
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*/
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#ifndef __UTIL_VARIADIC_HPP
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#define __UTIL_VARIADIC_HPP
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namespace util::variadic {
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/// return a reference to the first item in a parameter pack
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template <typename T, typename ...Tail>
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T&
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first (T &t, Tail&&...)
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{ return t; }
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/// return a reference to the first item in a const parameter pack
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template <typename T, typename ...Tail>
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const T&
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first (const T &t, const Tail&&...)
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{ return t; }
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}
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#endif
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