hash_multimap::equal_range (STL/CLR)

發行項
02/28/2013

尋找符合指定的索引鍵的範圍。

    cliext::pair<iterator, iterator> equal_range(key_type key);

參數

Key - 索引鍵
若要搜尋的索引鍵值。

備註

The member function returns a pair of iterators cliext::pair<iterator, iterator>( hash_multimap::lower_bound (STL/CLR)(key), hash_multimap::upper_bound (STL/CLR)(key)). 您可以用它來判斷目前在受控制序列中符合指定的索引鍵的項目範圍。

範例

// cliext_hash_multimap_equal_range.cpp 
// compile with: /clr 
#include <cliext/hash_map> 
 
typedef cliext::hash_multimap<wchar_t, int> Myhash_multimap; 
typedef Myhash_multimap::pair_iter_iter Pairii; 
int main() 
    { 
    Myhash_multimap c1; 
    c1.insert(Myhash_multimap::make_value(L'a', 1)); 
    c1.insert(Myhash_multimap::make_value(L'b', 2)); 
    c1.insert(Myhash_multimap::make_value(L'c', 3)); 
 
// display contents " [a 1] [b 2] [c 3]" 
    for each (Myhash_multimap::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); 
    }