std::basic_istream<CharT,Traits>::~basic_istream (3) - Linux Manuals

std::basic_istream<CharT,Traits>::~basic_istream: std::basic_istream<CharT,Traits>::~basic_istream

NAME

std::basic_istream<CharT,Traits>::~basic_istream - std::basic_istream<CharT,Traits>::~basic_istream

Synopsis

virtual ~basic_istream();

Destructs the input stream.

Notes

This destructor does not perform any operation on the underlying streambuffer (rdbuf()): the destructors of the derived input streams such as std::basic_ifstream and std::basic_istringstream are responsible for calling the destructors of the streambuffers.

Example

// Run this code

  #include <sstream>
  #include <iostream>

  void print_stringbuf(std::streambuf* p)
  {
      std::istream buf(p); // buf shares the buffer with s1
      int n;
      buf >> n;
      std::cout << n;
  } // calls the destructor of buf. p remains unaffected

  int main()
  {
      std::istringstream s1("10 20");
      print_stringbuf(s1.rdbuf());
      int n;
      s1 >> n;
      std::cout << ',' << n << '\n';
  }

Output:

  10,20