std::swap(std::list)
來自 cppreference.com
定義於標頭檔案 <list> |
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(C++17 前) | ||
(C++17 起) | ||
Specializes the std::swap algorithm for std::list. Swaps the contents of lhs and rhs. Calls lhs.swap(rhs).
目錄 |
[編輯] 引數
lhs, rhs | - | 要交換內容的容器 |
[編輯] 返回值
(無)
[編輯] 複雜度
常數時間。
異常
noexcept 規範:
noexcept(noexcept(lhs.swap(rhs))) |
(C++17 起) |
[編輯] 示例
執行此程式碼
#include <algorithm> #include <iostream> #include <list> int main() { std::list<int> alice{1, 2, 3}; std::list<int> bob{7, 8, 9, 10}; auto print = [](const int& n) { std::cout << ' ' << n; }; // Print state before swap 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); // Print state after swap 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'; }
輸出
Alice: 1 2 3 Bobby: 7 8 9 10 -- SWAP Alice: 7 8 9 10 Bobby: 1 2 3
[編輯] 參閱
交換內容 (public member function) |