hash_map::rbegin (STL/CLR)

项目
06/09/2015

指定反转的受控序列的开头。

    reverse_iterator rbegin();

备注

指定控件成员函数返回序列中的最后一个元素，或进行反向迭代器对象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_map_rbegin.cpp 
// compile with: /clr 
#include <cliext/hash_map> 
 
typedef cliext::hash_map<wchar_t, int> Myhash_map; 
int main() 
    { 
    Myhash_map c1; 
    c1.insert(Myhash_map::make_value(L'a', 1)); 
    c1.insert(Myhash_map::make_value(L'b', 2)); 
    c1.insert(Myhash_map::make_value(L'c', 3)); 
 
// display contents " [a 1] [b 2] [c 3]" 
    for each (Myhash_map::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_map::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); 
    }