From: "Ara.T.Howard" <Ara.T.Howard@...>
Date: 2005-10-31T10:45:57+09:00
Subject: Re: Very useful... 'break' accepts an argument

On Mon, 31 Oct 2005, Eric Mahurin wrote:

> Unfortunately the base iterators return the object they are iterating over
> instead of nil like the non-iterator loops (while, until, loop). For the
> non-iterator loops nil can mean terminate normally if you use break with a
> value (non-nil). For iterator loops you have to do the opposite - break with
> a value is of little use.
>
> I discussed the problem here:
>
> http://rcrchive.net/rcr/show/305

valid point.  i use the following pattern for those situations:

   config =
     catch('config') do
       search_path.each |dir|
         candidate = File::join dir, "#{ $0 }.conf"
         throw 'config', candidate if test ?e, candidate
       end
       nil
     end

   unless config
     warn{ "using default config" }
     config = default_config
   end

it would be nice to do this more compactly.

cheers.

-a
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