From: s@... (Stefan Schmiedl)
Date: 2002-03-28T04:09:54+09:00
Subject: Re: Variable variables in Ruby?

On Wed, 27 Mar 2002 19:49:33 +0100,
Jonas Delfs <jonas@NOSPAMdelfs.dk> wrote:
><james@rubyxml.com> skrev i en meddelelse
> news:PGEPJIFLPEPOHCKEEEIKGEFBDBAA.james@rubyxml.com...
> 
>> > How does Ruby handle variable variables?
>> > I want @submitVars to have the value of $_{value_of_some_variable}
>>
>> $_foobar = "Hello, world"
>> x = "foo"
>> y = "bar"
>>
>> baz = eval("$_#{x}#{y}")
>>
>> puts baz  # prints Hello, world
> 
> Thanks - but I know this one. I want to do it without eval() for security
> reasons (and maybe speed?). The var with the variable-name is comming from
> the user.

If you worry about security in this context,
I would recommend going for a hash with the 
names as keys. 

s.