🚀 go-pugleaf

In article omd@lll-winken.llnl.gov, Stan Erickson <serickson@llnl.gov> writes:
>
>Does flush move the buffer pointer back to the start point on an 
>ostrstream?  Or is it non-functional?  

High-level view:
The purpose of the ostream flush() function is to send any buffered
output characters to the output device. In the case of a strstream,
the internal buffer IS the output device, so there can never be
anything for flush() to do.

That is, just as flushing an ofstream doesn't rewind the external file,
flushing an ostrstream doesn't rewind it either.

Lower-level view:
With traditional iostreams, flush() is a non-virtual member of ostream
which is defined to call the virtual sync() function in the streambuf.
The sync() function for a strstream has nothing to do, as noted above.
The version of iostreams in the draft standard involves more classes
and some internal name changes, but the organization is substantially
the same.

---
Steve Clamage, stephen.clamage@eng.sun.com



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