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https://github.com/wichtounet/thor-os.git
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74 lines
1.8 KiB
C++
74 lines
1.8 KiB
C++
//=======================================================================
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// Copyright Baptiste Wicht 2013-2016.
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// Distributed under the terms of the MIT License.
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// (See accompanying file LICENSE or copy at
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// http://www.opensource.org/licenses/MIT)
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//=======================================================================
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#ifndef PAIR_H
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#define PAIR_H
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namespace std {
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template<typename T1, typename T2>
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class pair {
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public:
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using first_type = T1;
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using second_type = T2;
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first_type first;
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second_type second;
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//Constructor
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constexpr pair(const first_type& a, const second_type& b) : first(a), second(b){
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//Nothing to init
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}
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template<typename U1, typename U2>
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constexpr pair(U1&& x, U2&& y) : first(std::forward<U1>(x)), second(std::forward<U2>(y)){
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//Nothing to init
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}
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//Copy constructors
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constexpr pair(const pair&) = default;
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template<typename U1, typename U2>
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constexpr pair(const pair<U1, U2>& p) : first(p.first), second(p.second) {
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//Nothing to init
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}
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template<typename U1, typename U2>
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pair& operator=(const pair<U1, U2>& p){
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first = p.first;
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second = p.second;
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return *this;
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}
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//Move constructors
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constexpr pair(pair&&) = default;
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template<typename U1, typename U2>
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constexpr pair(pair<U1, U2>&& p) : first(std::move(p.first)), second(std::move(p.second)) {
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//Nothing to init
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}
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template<typename U1, typename U2>
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pair& operator=(pair<U1, U2>&& p){
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first = std::forward<U1>(p.first);
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second = std::forward<U2>(p.second);
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return *this;
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}
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};
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template<typename T1, typename T2>
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inline constexpr pair<T1, T2> make_pair(T1&& x, T2&& y){
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return pair<T1, T2>(std::forward<T1>(x), std::forward<T2>(y));
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}
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} //end of namespace std
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#endif
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