hash_multiset::reference

备注

此 API 已过时。替代为 unordered_multiset 类

提供对元素的引用类型。hash_multiset 存储。

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

备注

在Visual C++ .NET 2003中,成员<hash_map><hash_set> 头文件不再在std命名空间,而是已经进入了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

Header: <hash_set>

**命名空间:**stdext

请参见

参考

hash_multiset 类

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