operator== (map) (STL/CLR)

2015-06-09

列出相等比较。

template<typename Key,
    typename Mapped>
    bool operator==(map<Key, Mapped>% left,
        map<Key, Mapped>% right);

参数

left
比较左边的容器。
right
比较右边的容器。

备注

当由 left 和 right 控制的顺序具有相同长度，并且，对每个位置 i，left[i] == right[i]，该运算符函数返回 true。当一个个元素地比较两个集合时，您可以用它测试 left 是否和 right 排序一样。

示例

// cliext_map_operator_eq.cpp 
// compile with: /clr 
#include <cliext/map> 
 
typedef cliext::map<wchar_t, int> Mymap; 
int main() 
    { 
    Mymap c1; 
    c1.insert(Mymap::make_value(L'a', 1)); 
    c1.insert(Mymap::make_value(L'b', 2)); 
    c1.insert(Mymap::make_value(L'c', 3)); 
 
// display contents " [a 1] [b 2] [c 3]" 
    for each (Mymap::value_type elem in c1) 
        System::Console::Write(" [{0} {1}]", elem->first, elem->second); 
    System::Console::WriteLine(); 
 
// assign to a new container 
    Mymap c2; 
    c2.insert(Mymap::make_value(L'a', 1)); 
    c2.insert(Mymap::make_value(L'b', 2)); 
    c2.insert(Mymap::make_value(L'd', 4)); 
 
// display contents " [a 1] [b 2] [d 4]" 
    for each (Mymap::value_type elem in c2) 
        System::Console::Write(" [{0} {1}]", elem->first, elem->second); 
    System::Console::WriteLine(); 
 
    System::Console::WriteLine("[a b c] == [a b c] is {0}", 
        c1 == c1); 
    System::Console::WriteLine("[a b c] == [a b d] is {0}", 
        c1 == c2); 
    return (0); 
    }