tho_mica_l wrote:
>> You might have to use #instance_eval.
> 
> This is about what I try to avoid. Some interpreters make variables
> available via some pseudomagic dictionary/hash. Based on ruby's nature
> and my previous experiences I'd assumed ruby would provide such a
> solution too but couldn't find it out myself.
> 

There is no way in either Ruby 1.8 or Ruby 1.9. The names of variables 
and "variable calls" are determined at parse time, both for normal 
scopes and for eval. eval can add new variables, but only to the eval 
scope, and only in 1.8 (I believe 1.9 provides a separate eval scope for 
each eval).

Your only change of dynamically defining things that look like variables 
is the attr binding a few people have described.

- Charlie