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72 lines
1.2 KiB
72 lines
1.2 KiB
6 years ago
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// -*- c++ -*-
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#pragma once
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#include <litc.h>
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#include <type_traits>
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namespace std {
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template <class T>
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T&&
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forward(typename remove_reference<T>::type& t)
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{
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return static_cast<T&&>(t);
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}
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template <class T>
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T&&
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forward(typename remove_reference<T>::type&& t)
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{
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return static_cast<T&&>(t);
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}
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template<class T>
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typename remove_reference<T>::type&&
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move(T&& a)
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{
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return static_cast<typename remove_reference<T>::type&&>(a);
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}
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template<class T>
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void
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swap(T& a, T& b)
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{
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T tmp = move(a);
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a = move(b);
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b = move(tmp);
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}
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template<class T, size_t N>
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void
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swap(T (&a)[N], T (&b)[N])
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{
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for (size_t n = 0; n < N; n++)
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swap(a[n], b[n]);
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}
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template<class A, class B>
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struct pair {
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typedef A first_type;
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typedef B second_type;
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A first;
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B second;
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pair(const pair&) = default;
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pair(pair&&) = default;
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constexpr pair() : first(), second() {}
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pair(const A &a, const B &b) : first(a), second(b) {}
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bool operator==(const pair<A, B> &other) const {
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return first == other.first && second == other.second;
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}
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};
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template<class A, class B>
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pair<A, B>
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make_pair(const A &a, const B &b)
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{
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return pair<A, B>(a, b);
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}
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}
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