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64 lines
2.0 KiB
C++
64 lines
2.0 KiB
C++
/*
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*
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* Copyright (c) 1994
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* Hewlett-Packard Company
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*
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* Permission to use, copy, modify, distribute and sell this software
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* and its documentation for any purpose is hereby granted without fee,
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* provided that the above copyright notice appear in all copies and
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* that both that copyright notice and this permission notice appear
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* in supporting documentation. Hewlett-Packard Company makes no
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* representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied warranty.
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*
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*
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* Copyright (c) 1996
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* Silicon Graphics Computer Systems, Inc.
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*
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* Permission to use, copy, modify, distribute and sell this software
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* and its documentation for any purpose is hereby granted without fee,
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* provided that the above copyright notice appear in all copies and
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* that both that copyright notice and this permission notice appear
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* in supporting documentation. Silicon Graphics makes no
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* representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied warranty.
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*/
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#ifndef PAIR_H
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#define PAIR_H
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#include <stl_config.h>
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template <class T1, class T2>
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struct pair {
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typedef T1 first_type;
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typedef T2 second_type;
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T1 first;
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T2 second;
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pair() : first(T1()), second(T2()) {}
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pair(const T1& a, const T2& b) : first(a), second(b) {}
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#ifdef __STL_MEMBER_TEMPLATES
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template <class U1, class U2>
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pair(const pair<U1, U2>& p) : first(p.first), second(p.second) {}
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#endif
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};
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template <class T1, class T2>
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inline bool operator==(const pair<T1, T2>& x, const pair<T1, T2>& y) {
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return x.first == y.first && x.second == y.second;
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}
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template <class T1, class T2>
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inline bool operator<(const pair<T1, T2>& x, const pair<T1, T2>& y) {
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return x.first < y.first || (!(y.first < x.first) && x.second < y.second);
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}
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template <class T1, class T2>
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inline pair<T1, T2> make_pair(const T1& x, const T2& y) {
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return pair<T1, T2>(x, y);
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}
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#endif
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