From: Robert Klemme <shortcutter@...>
Date: 2009-11-19T21:49:33+09:00
Subject: Re: open a binary file-read bit-change bit-update same file

2009/11/19 Dalthon [BR] <efqdalton@uol.com.br>:
> You can synchronize io setting file.sync = true to update on the same
> file object

That does only change the point in time _when_ the change in the file
can be observed by other processes but it does not affect _where_ the
changes are written.  For that (i.e. writing to the same file) you
need File.open(name, "r+") anyway.

If you use that option and do "bitwise" updates (actually only
bytewise is possible) efficiency will drop even more dramatically.

Kind regards

robert

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