std::basic_ostream::swap(3) C++ Standard Libary std::basic_ostream::swap(3) NAME std::basic_ostream::swap - std::basic_ostream::swap Synopsis protected: (since C++11) void swap( basic_ostream& rhs ); Calls basic_ios::swap(rhs) to swap all data members of the base class, except for rdbuf(), between *this and rhs. This swap function is protected: it is called by the swap functions of the swappable output stream classes std::basic_of- stream and std::basic_ostringstream, which know how to correctly swap the associ- ated streambuffers. Parameters rhs - a basic_ostream of the same type to swap with Example // Run this code #include <iostream> #include <sstream> #include <utility> int main() { std::ostringstream s1("hello"); std::ostringstream s2("bye"); s1.swap(s2); // OK, ostringstream has a public swap() std::swap(s1, s2); // OK, calls s1.swap(s2) // std::cout.swap(s2); // ERROR: swap is a protected member std::cout << s1.str() << '\n'; } Output: hello http://cppreference.com 2024.06.10 std::basic_ostream::swap(3)
NAME | Synopsis | Parameters | Example | Output:
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