Namespaces
Variants
Actions

std::swap(std::any)

From cppreference.com
< cpp‎ | utility‎ | any
 
 
Utilities library
General utilities
Relational operators (deprecated in C++20)
(C++20)(C++20)(C++20)  
(C++20)
(C++20)
(C++14)
(C++11)
(C++11)
(C++23)
(C++11)
(C++17)
Common vocabulary types
(C++11)
(C++17)
(C++17)
(C++17)
(C++11)
(C++17)
(C++23)


 
 
Defined in header <any>
void swap( any& lhs, any& rhs ) noexcept;
(since C++17)

Overloads the std::swap algorithm for std::any . Swaps the content of two any objects by calling lhs.swap(rhs).

[edit] Parameters

lhs, rhs - objects to swap

[edit] Example

Run this code
#include <any>
#include <print>
#include <string>
 
int main()
{
 std::any p = 42, q = std::string {"Bishop"};
 std::println ("p: {}, q: {}", std::any_cast <int>(p), std::any_cast <std::string &>(q));
 std::println ("swap(p, q)");
 std::swap (p, q);
 std::println ("p: {}, q: {}", std::any_cast <std::string &>(p), std::any_cast <int>(q));
}

Output:

p: 42, q: Bishop
swap(p, q)
p: Bishop, q: 42

[edit] See also

swaps two any objects
(public member function) [edit]
Retrieved from "https://en.cppreference.com/mwiki/index.php?title=cpp/utility/any/swap2&oldid=179371"

AltStyle によって変換されたページ (->オリジナル) /