From: Simon Cozens <simon@...>
Date: 2002-10-22T18:36:27+09:00
Subject: Re: What I did (was Re: functional Ruby equiv to this perl snippet)

dblack@candle.superlink.net writes:
> >   if FileTest.exist?(filename)
> >     File.open(filename).each do |line|
> 
> Just to point out that you're introducing a wee race condition,
> because it's possible for the file to be deleted (by another process)
> between the exist? test and the open.

Also, don't forget that there are more ways an open can fail than just
ENOENT; but maybe in those conditions you'd prefer to throw an exception
anyway.

-- 
Old Japanese proverb:
	There are two kinds of fools -- those who never climb Mt. Fuji,
	and those who climb it twice.