From: "Brian Schröder" <ruby.brian@...>
Date: 2005-11-16T22:52:28+09:00
Subject: Re: static variable; behaviour in ruby?

On 16/11/05, Hugh Sasse <hgs@dmu.ac.uk> wrote:
> Any idea how to create or simulate a static variable in ruby?
>
> I want to create a variable to hold state between calls of a method,
> but have the state disappear when the method goes out of scope.
> I could create it in some external object but then I'd need to query
> the scoping rules, and know where i was.
>
> I'm trying to do an instance_eval on a string containing a method such as
>    do_this x,y,z {block}
> and I want to evaluate the block, or not, as a function of some
> state against which x,y,z are compared.  The code will be called several
> times, but I only want the state intialized the first time the scope
> is entered.
>
> And, just to make matters worse, there could be several independent
> calls to this method within the scope, each with its own separate
> state.
>
> Maybe there's another way to do this?
>
>         Thank you
>         Hugh
>
>

I advise that you state your basic problem, as this seems to be a
problem with an ugly workaround. You can probably restructure your
problem such that this is no longer needed.

Brian

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