From: Robert Klemme <shortcutter@...>
Date: 2008-01-05T05:04:57+09:00
Subject: Re: iterating over array of variables - can't change them?

On 04.01.2008 18:36, Ken Bloom wrote:
> On Fri, 04 Jan 2008 08:06:38 -0800, AJS wrote:
> 
>> title="Title"
>> subtitle="Subtitle"
>> body="Body"
>> [title,subtitle,body].each {|item| item.downcase!}
>>
>> This successfully sets the original variables to "title", "subtitle",
>> "body"
>>
>> BUT
>>
>> [title,subtitle,body].each {|item| item=""}
>>
>> has no effect.
>>
>> Why doesn't this work? How can I make it work?
>>
>> thanks
> 
> Refer to the variables as strings and use eval.
> 
> ["title","subtitle","body"].each {|item| eval "#{item}=''"}

I believe this is rather inefficient (aka slow) and more importantly 
will not run under all circumstances ($SAFE).  Plus, it's not needed. :-)

Kind regards

	robert