From: Han Holl <han@...>
Date: 2002-06-05T06:28:35+09:00
Subject: Dynamic local variables ?


Hello,

Is it possible at all to generate local variables dynamically ?
What I need is  roughly this:
I read in a file with one or more multidimensional hashes:
 
  table = Tabel.new("/tmp/rubdefs.text")
  puts table["rub"]["T"]["datumontvangst"]

I want to access this as:
  rub["T"]["datumontvangst"]

If I do
  rub = table["rub"]
I have achived this, but unfortunately I don't know the names
of the first index beforehand.
I've tried something like: 
  a = %q{ rub = table["rub"]}
  instance_eval a

but this doesn't work. (It does with @rub instead of rub, but I prefer
locals).
Can this be done at all?

Thanks for any suggestions.

Han Holl

P.S. The reason I want this, that I'm busy trying to translate an old,
homebrewed embedded language to ruby. This language uses the
above syntax.