From: thomas coopman <thomas.coopman@...>
Date: 2006-06-20T01:35:33+09:00
Subject: Re: best way to deal with command line options

On Tue, 20 Jun 2006 00:45:00 +0900
Matthew Smillie <M.B.Smillie@sms.ed.ac.uk> wrote:

> > Another little question, what's the best way to do when writing a  
> > program in ruby,
> > keep the core and the main in different files, place them in the  
> > same file,.. or doesn't it matter?
> 
> To be honest, I'm not 100% sure what you mean by 'main'.  I'm  
> guessing it's something like this:
> 
> Class A
>   ...
> end
> Class B
>   ...
> end
> 
> # 'main' starts here.
> a = A.new
> ...
> 
> 
> In one sense it doesn't matter.  But including things like that in  
> the same file can lead to problems if you ever want to use your  
> classes in a different file - your 'main' will get executed when you  
> 'require' the original file.  It's likely best in the long run to  
> separate specific programs using your classes from the classes  
> themselves.  If you feel like cheating, though, you can always do this:
> 
> if $0 == __FILE__
>    # main goes in here
> end
> 
> matthew smillie
> 
Thanks for your answers!

Thomas Coopman