std::swap(std::inplace_vector)

Defined in header `<inplace_vector>`
constexpr friend 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).

Parameters

lhs, rhs

containers whose contents to swap

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>))

Example

#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

std::swap(std::inplace_vector)

Parameters

Complexity

Exceptions

Example

See also