std::swap(std::inplace_vector)
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< cpp | container | inplace vector
C++
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std::inplace_vector
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| Defined in header <inplace_vector>
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| constexpr void swap( std::inplace_vector& lhs, std::inplace_vector& rhs ) noexcept(/* see below */); |
(since C++26) | |
Specializes the std::swap algorithm for std::inplace_vector. Swaps the contents of lhs and rhs. Calls lhs.swap(rhs).
Contents |
[edit] Parameters
| lhs, rhs | - | containers whose contents to swap |
[edit] Complexity
Linear in size of the containers.
Exceptions
noexcept specification:
noexcept(N == 0 ||
(std::is_nothrow_swappable_v<T> && std::is_nothrow_move_constructible_v<T>)
(std::is_nothrow_swappable_v<T> && std::is_nothrow_move_constructible_v<T>)
[edit] Example
Run this code
#include <algorithm> #include <iostream> #include <inplace_vector> int main() { std::inplace_vector<int, 4> alice{1, 2, 3}; std::inplace_vector<int, 4> 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'; }
Output:
Alice: 1 2 3 Bobby: 7 8 9 10 -- SWAP Alice: 7 8 9 10 Bobby: 1 2 3
[edit] See also
| swaps the contents (public member function) [edit] |
