operator< (map) (STL/CLR)

發行項
06/07/2013

清單小於比較。

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

參數

left
若要比較的左的容器。
right
若要比較的正確容器。

備註

The operator function returns true if, for the lowest position i for which !(right[i] < left[i]) it is also true that left[i] < right[i].否則，它會傳回left->size() < right->size()您用它來測試是否left之前排序right的兩個對應如果正在比較的項目由項目。

範例

// cliext_map_operator_lt.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); 
    }