std::swap(std::any)
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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