From: ara.t.howard@...
Date: 2006-07-10T00:41:38+09:00
Subject: Re: renaming files randomly

On Mon, 10 Jul 2006 Ara.T.Howard@noaa.gov wrote:

> this loop loses data
>
> if
>
>  files = %w( a b c )
>
> and
>
>  new_names = %w( c b a )
>
> then the renaming order is
>
>  a -->> c
>  b -->> b
>  c -->> a
>
> so
>
>  File.rename 'a', 'c'  # c is clobbered
>  File.rename 'b', 'b'  # ok
>  File.rename 'c', 'a'  # a is clobbered, new c is lost
>
> at the end of the loop you'll have only files 'a' and 'b' and no error will
> have been thrown.

sorry - replace 'a b c' with '1 2 3' and 'c b a' with '3 2 1' - basically you
lose data when the slides have numbered names to begin with, which i noticed
because this is exactly how my slideshow software names it's slides!  ;-)

-a
-- 
suffering increases your inner strength.  also, the wishing for suffering
makes the suffering disappear.
- h.h. the 14th dali lama