From: Randy Lawrence <jm@...>
Date: 2004-07-03T03:29:07+09:00
Subject: Re: How to detect if variable has been defined yet?

Sean O'Dell wrote:

> On Friday 02 July 2004 10:49, Randy Lawrence wrote:
> 
>>Hi,
>>
>>I'd like to detect if a variable has been defined yet.  Is this possible
>>in Ruby or mod_ruby?
>>
>>For example, I'd like to do the following:
>>
>>if $total.exists
>>    $total = $total + 1
>>else
>>    $total = 0
>>end
> 
> 
> if defined?($total)
>     $total = $total + 1
> else
>     $total = 0
> end
> 
> 
> 	Sean O'Dell
> 
> 

Thanks! This was exactly what was needed and it works.