From: dblack@...
Date: 2007-02-21T11:19:52+09:00
Subject: Re: Checking what a method has returned

Hi --

On Wed, 21 Feb 2007, Prime@ruby-lang.org wrote:

> I do not know if this will help you out, I think this is what you 
> wanted. This only calls the downloadImg method if the file exists.
>
>
> @domains = ['yahoo.com','google.com']
>
> def checkCache(filename)
> if File.exists?(filename)
>   return true
> else
>   return false
> end
> end

Save your fingers some work :-)

   def check_cache(filename)
     File.exists?(filename)
   end

File.exists? already returns true or false, so you don't have to wrap
it.  In fact, if all you want to do is check file existence, you're
probably best off just using File.exists? directly.


David

-- 
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