operator< (pair) (STL/CLR)

發行項
06/10/2015

為小於比較。

template<typename Value1,
    typename Value2>
    bool operator<(pair<Value1, Value2>% left,
        pair<Value1, Value2>% right);

參數

left
要比較的左邊。
right
要比較的物件。

備註

運算子函式會傳回 left.first <right.first || !(right.first <left.first &&left.second <right.second。您會用它來測試 left 是否為已排序的 right 中之前，當兩個所要比較的項目由項目時。

範例

// cliext_pair_operator_lt.cpp 
// compile with: /clr 
#include <cliext/utility> 
 
int main() 
    { 
    cliext::pair<wchar_t, int> c1(L'x', 3); 
    System::Console::WriteLine("[{0}, {1}]", c1.first, c1.second); 
    cliext::pair<wchar_t, int> c2(L'x', 4); 
    System::Console::WriteLine("[{0}, {1}]", c2.first, c2.second); 
 
    System::Console::WriteLine("[x 3] < [x 3] is {0}", 
        c1 < c1); 
    System::Console::WriteLine("[x 3] < [x 4] is {0}", 
        c1 < c2); 
    return (0); 
    }