swap 함수(unordered_set)
두 컨테이너의 내용을 바꿉니다.
template<class Key, class Hash, class Pred, class Alloc>
void swap(
unordered_set <Key, Hash, Pred, Alloc>& left,
unordered_set <Key, Hash, Pred, Alloc>& right);
매개 변수
Key
키 형식입니다.Hash
해시 함수 개체 형식입니다.Pred
같음 비교 함수 개체 형식.Alloc
The allocator class.left
The first container to swap.right
The second container to swap.
설명
The template function executes left.unordered_set::swap(right).
예제
// std_tr1__unordered_set__u_s_swap.cpp
// compile with: /EHsc
#include <unordered_set>
#include <iostream>
typedef std::unordered_set<char> Myset;
int main()
{
Myset c1;
c1.insert('a');
c1.insert('b');
c1.insert('c');
// display contents " [c] [b] [a]"
for (Myset::const_iterator it = c1.begin();
it != c1.end(); ++it)
std::cout << " [" << *it << "]";
std::cout << std::endl;
Myset c2;
c2.insert('d');
c2.insert('e');
c2.insert('f');
c1.swap(c2);
// display contents " [f] [e] [d]"
for (Myset::const_iterator it = c1.begin();
it != c1.end(); ++it)
std::cout << " [" << *it << "]";
std::cout << std::endl;
swap(c1, c2);
// display contents " [c] [b] [a]"
for (Myset::const_iterator it = c1.begin();
it != c1.end(); ++it)
std::cout << " [" << *it << "]";
std::cout << std::endl;
return (0);
}
요구 사항
헤더: <unordered_set>
네임스페이스: std