hash_multiset::reference

说明说明

此 API 已过时。另一种方法是 unordered_multiset Class

提供对元素的类型在 hash_multiset 存储状态。

typedef list<typename _Traits::value_type, typename _Traits::allocator_type>::reference reference;

备注

在 Visual C++ .NET 2003 中,<hash_map><hash_set> 标头文件的成员中不再标准,命名空间,而是将 stdext 命名空间。有关更多信息,请参见 stdext 命名空间

示例

// hash_multiset_reference.cpp
// compile with: /EHsc
#include <hash_set>
#include <iostream>

int main( )
{
   using namespace std;   
   using namespace stdext;
   hash_multiset <int> hms1;

   hms1.insert( 10 );
   hms1.insert( 20 );

   // Declare and initialize a reference &Ref1 to the 1st element
   int &Ref1 = *hms1.begin( );

   cout << "The first element in the hash_multiset is "
        << Ref1 << "." << endl;

   // The value of the 1st element of the hash_multiset can be
   // changed by operating on its (non const) reference
   Ref1 = Ref1 + 5;

   cout << "The first element in the hash_multiset is now "
        << *hms1.begin() << "." << endl;
}
  
  

要求

标头: <hash_set>

命名空间: stdext

请参见

参考

hash_multiset Class

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