From: Wybo Dekker <wybo@...>
Date: 2005-12-02T17:44:04+09:00
Subject: Re: rio-editing on-the-fly

On Fri, 2 Dec 2005, Gavin Sinclair wrote:

> 
> Wybo Dekker wrote:
> > according to the rio-docs I would expect it to be possible to edit a file
> > on-the-fly; for example, I tried to make a copy of /etc/passwd with my own
> > name (wybo) replaced with XXXX:
> >
> > rio('/etc/passwd').gsub(/wybo/,'XXXX')  > rio('new')
> >
> > but the resulting file "new" is an exact copy of /etc/passwd.
> > What am I doing wrong?
> 
> You're not reading the file.  Try
> 
>   rio('/etc/passwd').read.gsub(/wybo/,'XXXX')  > rio('new')

that helped indeed, thanks, but is it not in contradiction to rio's 
description of sub?:

  sub(re,string)

Create a new Rio referencing the result of applying String#sub to the 
value returned by Rio#to_s. So:

  ario.sub(re,string)

is equivelent to

  rio(ario.to_s.sub(re,string))



-- 
Wybo