std::basic_ostream<CharT,Traits>::swap - cppreference.com (original) (raw)

| protected: void swap( basic_ostream& rhs ); | | (since C++11) | | -------------------------------------------- | | ------------- |

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_ofstream and std::basic_ostringstream, which know how to correctly swap the associated streambuffers.

[edit] Parameters

[edit] Example

#include #include #include   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'; }

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