std::swap(std::flat_set)
From cppreference.com
Defined in header <flat_set> | ||
friendvoid swap(std::flat_set& lhs, std::flat_set& rhs )noexcept; | (since C++23) | |
Specializes the std::swap algorithm for std::flat_set. Swaps the contents of lhs and rhs. Calls lhs.swap(rhs).
Contents |
[edit]Parameters
| lhs, rhs | - | containers whose contents to swap |
[edit]Return value
(none)
[edit]Complexity
Same as swapping the underlying containers.
[edit]Example
Run this code
#include <algorithm>#include <iostream>#include <flat_set> int main(){std::flat_set<int> alice{1, 2, 3};std::flat_set<int> bob{7, 8, 9, 10}; auto print =[](constint& n){std::cout<<' '<< n;}; // Print state before swapstd::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 swapstd::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) |
