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完成pair

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This commit is contained in:
邹晓航
2014-11-05 10:02:02 +08:00
parent b2573465ff
commit d779a9dcc1
1 changed files with 76 additions and 1 deletions
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77
TinySTL/Utility.h
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@@ -1,6 +1,8 @@
#ifndef _UTILITY_H_
#define _UTILITY_H_
#include "Algorithm.h"
namespace TinySTL{
//************ [swap] ***************
template<class T>
@@ -19,7 +21,80 @@ namespace TinySTL{
T1 first;
T2 second;
public:
pair(){}
template<class U, class V>
pair(const pair<U, V>& pr);
pair(const first_type& a, const second_type& b);
pair& operator= (const pair& pr);
void swap(pair& pr);
public:
template <class T1, class T2>
friend bool operator== (const pair<T1, T2>& lhs, const pair<T1, T2>& rhs);
template <class T1, class T2>
friend bool operator!= (const pair<T1, T2>& lhs, const pair<T1, T2>& rhs);
template <class T1, class T2>
friend bool operator< (const pair<T1, T2>& lhs, const pair<T1, T2>& rhs);
template <class T1, class T2>
friend bool operator<= (const pair<T1, T2>& lhs, const pair<T1, T2>& rhs);
template <class T1, class T2>
friend bool operator> (const pair<T1, T2>& lhs, const pair<T1, T2>& rhs);
template <class T1, class T2>
friend bool operator>= (const pair<T1, T2>& lhs, const pair<T1, T2>& rhs);
template <class T1, class T2>
friend void swap(pair<T1, T2>& x, pair<T1, T2>& y);
};
template<class T1, class T2>
template<class U, class V>
pair<T1, T2>::pair(const pair<U, V>& pr) :first(pr.first), second(pr.second){}
template<class T1, class T2>
pair<T1, T2>::pair(const first_type& a, const second_type& b) : first(a), second(b){}
template<class T1, class T2>
pair<T1, T2>& pair<T1, T2>::operator =(const pair<T1, T2>& pr){
if (this != &pr){
first = pr.first;
second = pr.second;
}
return *this;
}
template<class T1, class T2>
void pair<T1, T2>::swap(pair<T1, T2>& pr){
TinySTL::swap(first, pr.first);
TinySTL::swap(second, pr.second);
}
template <class T1, class T2>
bool operator== (const pair<T1, T2>& lhs, const pair<T1, T2>& rhs){
return lhs.first == rhs.first && lhs.second == rhs.second;
}
template <class T1, class T2>
bool operator!= (const pair<T1, T2>& lhs, const pair<T1, T2>& rhs){
return !(lhs == rhs);
}
template <class T1, class T2>
bool operator< (const pair<T1, T2>& lhs, const pair<T1, T2>& rhs){
return lhs.first<rhs.first || (!(rhs.first<lhs.first) && lhs.second<rhs.second);
}
template <class T1, class T2>
bool operator<= (const pair<T1, T2>& lhs, const pair<T1, T2>& rhs){
return !(rhs<lhs);
}
template <class T1, class T2>
bool operator>(const pair<T1, T2>& lhs, const pair<T1, T2>& rhs){
return rhs<lhs;
}
template <class T1, class T2>
bool operator>= (const pair<T1, T2>& lhs, const pair<T1, T2>& rhs){
return !(lhs<rhs);
}
template <class T1, class T2>
void swap(pair<T1, T2>& x, pair<T1, T2>& y){
x.swap(y);
}
// ******* [make_pair] ************
template<class U, class V>
pair<U, V> make_pair(const U& u, const V& v){
return pair<U, V>(u, v);
}
}
#endif