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std::basic_spanbuf::setbuf(3)  C++ Standard Libary std::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).  Equiva-
     lently 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 pub-
     setbuf() 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-provided
     char array.

Example
	 This section is incomplete
	 Reason: no example

See also
	pubsetbuf invokes setbuf()
		  (public member function of std::basic_streambuf<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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