multimap::equal_range (STL/CLR)

2013-06-07

查找与指定的键的范围。

    pair_iter_iter equal_range(key_type _Keyval);

参数

_Keyval
搜索的键值。

备注

方法返回迭代器 -multimap::lower_bound (STL/CLR)(_Keyval),multimap::upper_bound (STL/CLR)(_Keyval)对。使用该当前确定与指定的键元素的大小控件序列。

示例

// cliext_multimap_equal_range.cpp 
// compile with: /clr 
#include <cliext/map> 
 
typedef cliext::multimap<wchar_t, int> Mymultimap; 
typedef Mymultimap::pair_iter_iter Pairii; 
int main() 
    { 
    Mymultimap c1; 
    c1.insert(Mymultimap::make_value(L'a', 1)); 
    c1.insert(Mymultimap::make_value(L'b', 2)); 
    c1.insert(Mymultimap::make_value(L'c', 3)); 
 
// display contents " [a 1] [b 2] [c 3]" 
    for each (Mymultimap::value_type elem in c1) 
        System::Console::Write(" [{0} {1}]", elem->first, elem->second); 
    System::Console::WriteLine(); 
 
// display results of failed search 
    Pairii pair1 = c1.equal_range(L'x'); 
    System::Console::WriteLine("equal_range(L'x') empty = {0}", 
        pair1.first == pair1.second); 
 
// display results of successful search 
    pair1 = c1.equal_range(L'b'); 
    for (; pair1.first != pair1.second; ++pair1.first) 
        System::Console::Write(" [{0} {1}]", 
            pair1.first->first, pair1.first->second); 
    System::Console::WriteLine(); 
    return (0); 
    }