std:: swap (std::flat_multiset)
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flat multiset
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(C++26)
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(C++23)
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(C++23)
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(C++23)
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定义于头文件
<flat_set>
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void
swap
(
std::
flat_multiset
&
lhs,
std::
flat_multiset
&
rhs
)
noexcept
;
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(C++23 起)
(C++26 起为 constexpr) |
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为 std::flat_multiset 特化 std::swap 算法。交换 lhs 与 rhs 的内容。调用 lhs. swap ( rhs ) 。
目录 |
参数
| lhs, rhs | - | 待交换内容的容器 |
复杂度
等同于交换底层容器。
示例
运行此代码
#include <algorithm> #include <iostream> #include <flat_set> int main() { std::flat_multiset<int> alice{1, 2, 3}; std::flat_multiset<int> bob{7, 8, 9, 10}; auto print = [](const int& n) { std::cout << ' ' << n; }; // 交换前打印状态 std::cout << "Alice:"; std::for_each(alice.begin(), alice.end(), print); std::cout << "\nBobby:"; std::for_each(bob.begin(), bob.end(), print); std::cout << '\n'; std::cout << "-- SWAP\n"; std::swap(alice, bob); // 交换后打印状态 std::cout << "Alice:"; std::for_each(alice.begin(), alice.end(), print); std::cout << "\nBobby:"; std::for_each(bob.begin(), bob.end(), print); std::cout << '\n'; }
输出:
Alice: 1 2 3 Bobby: 7 8 9 10 -- SWAP Alice: 7 8 9 10 Bobby: 1 2 3
参见
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交换内容
(公开成员函数) |