public member function
<regex>

std::basic_regex::swap

void swap (basic_regex& rgx);
Swap content
Exchanges the regular expression in the basic_regex object by the regular expression in rgx. All properties are exchanged.

This is done in constant time by exchanging internal pointers.

Parameters

rgx
Another basic_regex object of the same type.

Return value

none

See also

basic_regex::assign
Assign regular expression (public member function)
swap (basic_regex)
Exchanges the contents of two regex (function template )

C++