指定反转的受控序列的开头。
reverse_iterator rbegin();
备注
成员函数返回指定控件序列的最后一个元素反向迭代器,或在一个空序列的开头之外。因此,它指定反向序列的 beginning。用于获取一个迭代器,该迭代器指定相反顺序的受控序列的 current 开头,但如果受控序列的长度发生更改,则该迭代器的状态也会发生更改。
示例
// cliext_hash_multimap_rbegin.cpp
// compile with: /clr
#include <cliext/hash_map>
typedef cliext::hash_multimap<wchar_t, int> Myhash_multimap;
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();
// inspect first two items in reversed sequence
Myhash_multimap::reverse_iterator rit = c1.rbegin();
System::Console::WriteLine("*rbegin() = [{0} {1}]",
rit->first, rit->second);
++rit;
System::Console::WriteLine("*++rbegin() = [{0} {1}]",
rit->first, rit->second);
return (0);
}
要求
标题: <cliext/hash_map>
命名空间: cliext