C++

Reference

<sstream>

basic_ostringstream

public member function
<sstream>

std::basic_ostringstream::rdbuf

basic_stringbuf<char_type,traits_type,allocator_type>* rdbuf() const;
Get stream buffer
Returns a pointer to the internal basic_stringbuf object.

Notice however, that this is not necessarily the same as the currently associated stream buffer (returned by basic_ios::rdbuf).

Parameters

none

Return Value

A pointer to the internal basic_stringbuf object.
char_type, traits_type and allocator_type are member types defined as aliases of the class template parameters (see basic_ostringstream types).

Example

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// ostringstream::rdbuf
#include <string>       // std::string
#include <iostream>     // std::cout
#include <sstream>      // std::ostringstream, std::stringbuf

int main () {
  std::ostringstream oss;

  // using stringbuf directly
  std::stringbuf *pbuf = oss.rdbuf();
  pbuf->sputn ("Sample string",13);
  std::cout << pbuf->str();

  return 0;
}
 

Sample string


Data races

Accesses the stream object.
Concurrent access to the same stream object may cause data races.

Exception safety

Strong guarantee: if an exception is thrown, there are no changes in the stream buffer.

See also

basic_stringbuf
String stream buffer (class template)
basic_ios::rdbuf
Get/set stream buffer (public member function)