From: Jan Svitok <jan.svitok@...>
Date: 2006-10-14T16:08:49+09:00
Subject: Re: File.puts or File.write ?

On 10/14/06, Wilson Bilkovich <wilsonb@gmail.com> wrote:
> On 10/13/06, Justin Collins <collinsj@seattleu.edu> wrote:
> > Joe Ruby MUDCRAP-CE wrote:
> > > For general purpose file writing, does it matter whether puts or write
> > > is used? From the docs, it seems like puts should be used for strings,
> > > while write can be used for anything. I'm not really sure what
> > > difference there is between the two, but the docs say something about
> > > puts adding newlines or something.
> > >
> > > Thanks,
> > > Joe
> > >
> > >
> >
> > Yes, using puts adds a newline to the end of the output, while write and
> > print do not. So, yes, it can matter a great deal which one you use.
> >
>
> puts only does that when you're not in binary mode, though. I have yet
> to use 'write' for anything, at least as far as I can recall.

And IIRC write is atomic - 'puts' consists of two 'write's, so there
may be a thread switch between them (at least on current
implementation). In other words, if writing to a file from more
threads, 'write (string + "\n")' should be always right, while using
'puts string' the end-of-lines might be crossed. (string1 string2 eol1
eol2).