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

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

Calls basic_ios::swap(rhs) to swap all data members of the base class except for rdbuf(), and swaps the values of the gcount() counters between *this and rhs. This swap function is protected: it is called by the swap functions of the swappable input stream classes std::basic_ifstream and std::basic_istringstream, which know how to correctly swap the associated streambuffers.

[edit] Parameters

[edit] Example

#include #include #include   int main() { std::istringstream s1("hello"); std::istringstream s2("bye");   s1.swap(s2); // OK, istringstream has a public swap() std::swap(s1, s2); // OK, calls s1.swap(s2) // std::cin.swap(s2); // ERROR: swap is a protected member   std::cout << s1.rdbuf() << '\n'; }

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