From: Frantisek ZACEK <czechripper@...>
Date: 2008-08-11T13:07:06+09:00
Subject: Re: Expanding variables in a string

On Mon, Aug 11, 2008 at 6:00 AM, Thind, Aman <aman.thind@lehman.com> wrote:
> Hello,
>
> If I have a string containing variables, how can I expand them?
>
> I retrieve this string from a db so I cannot expand it at the time of
> assignment.
>
> Eg:
>
> myaction = 'perl #{ENV['HOME_SCRIPTS']}/myscript.pl -#{params[:date]}'
>
> I want to be able to do:
>
> system(myaction)
>
> but for this I have to expand the vars inside the script first.
>
> Many Thanks,
> Aman
>
>


You mean you wish to execute in Ruby code you have in a string ?

If that's wha you're looking for then eval is what you want.



-- 
Frantisek ZACEK (zacek_f) -- SRS 2008