unordered_map::end
指定受控序列的末尾。
iterator end();
const_iterator end() const;
local_iterator end(size_type nbucket);
const_local_iterator end(size_type nbucket) const;
参数
参数 |
说明 |
nbucket |
存储数字。 |
备注
前两个成员函数返回该序列。结束点的前向迭代器。 最后两个成员函数返回除之外的存储桶点 nbucket的末尾。向前迭代器。
示例
代码
// std_tr1__unordered_map__unordered_map_end.cpp
// compile with: /EHsc
#include <unordered_map>
#include <iostream>
typedef std::unordered_map<char, int> Mymap;
int main()
{
Mymap c1;
c1.insert(Mymap::value_type('a', 1));
c1.insert(Mymap::value_type('b', 2));
c1.insert(Mymap::value_type('c', 3));
// display contents " [c 3] [b 2] [a 1]"
for (Mymap::const_iterator it = c1.begin();
it != c1.end(); ++it)
std::cout << " [" << it->first << ", " << it->second << "]";
std::cout << std::endl;
// inspect last two items " [a 1] [b 2]"
Mymap::iterator it2 = c1.end();
--it2;
std::cout << " [" << it2->first << ", " << it2->second << "]";
--it2;
std::cout << " [" << it2->first << ", " << it2->second << "]";
std::cout << std::endl;
// inspect bucket containing 'a'
Mymap::const_local_iterator lit = c1.end(c1.bucket('a'));
--lit;
std::cout << " [" << lit->first << ", " << lit->second << "]";
return (0);
}
Output
[c, 3] [b, 2] [a, 1]
[a, 1] [b, 2]
[a, 1]
要求
标头: <unordered_map>
命名空间: std