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std::basic_spanbuf::setbuf(3) C++ Standard Libarystd::basic_spanbuf::setbuf(3)

NAME
       std::basic_spanbuf::setbuf - std::basic_spanbuf::setbuf

Synopsis
	  protected:
	  std::basic_streambuf<CharT,	  Traits>*     setbuf(	  CharT	   *s,
       (since C++23)
	  std::streamsize n ) override;

	  Makes	the basic_spanbuf perform I/O on the buffer [s,	s + n).	Equiv-
       alently calls
	  this->span(std::span<CharT>(s, n)) and then returns this.

		    Set	bits in	open mode	    Return value after setting
	      (affecting pointers to get area)	    eback()   gptr()  egptr()
	  std::ios_base::in			    s	      s	      s	+ n
		    Set	bits in	open mode	    Return value after setting
	      (affecting pointers to put area)	    pbase()   pptr()  epptr()
	  std::ios_base::out &&	!std::ios_base::ate s	      s	      s	+ n
	  std::ios_base::out &&	std::ios_base::ate  s	      s	+ n   s	+ n

	  This function	is protected virtual, it may only  be  called  through
       pubsetbuf() or
	  from	member functions of a user-defined class derived from std::ba-
       sic_spanbuf.

Parameters
	  s - pointer to the first CharT in the	user-provided buffer
	  n - the number of CharT elements in the user-provided	buffer

Return value
	  this

Notes
	  The	deprecated   stream   buffer	std::strstreambuf    or	   the
       boost.IOStreams device
	  boost::basic_array can also implement	I/O buffering over a user-pro-
       vided char array.

Example
	   This	section	is incomplete
	   Reason: no example

See also
	  pubsetbuf invokes setbuf()
		    (public	member	  function    of    std::basic_stream-
       buf<CharT,Traits>)
	  setbuf    attempts to	replace	the controlled character sequence with
       an array
	  [virtual] (virtual protected member function of
		    std::basic_stringbuf<CharT,Traits,Allocator>)
	  setbuf    attempts to	replace	the controlled character sequence with
       an array
	  [virtual] (virtual protected member function of std::strstreambuf)

Category:
	    * Todo no example

http://cppreference.com		  2024.06.10	 std::basic_spanbuf::setbuf(3)

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