From: "ara.t.howard" <ara.t.howard@...>
Date: 2008-07-06T08:08:47+09:00
Subject: Re: Parameter name reflection


On Jul 5, 2008, at 2:36 PM, Oliver Saunders wrote:

> Thanks Matthias that looks pretty cool.
>
> @ara.t.howard: this is useful as a meta-programming technique.  
> Here's an
> example:
>
> # controller implementation
> def index_action(id, style, redirected_from)
>    local_variables # pre-populated with values from HTTP request  
> params
> end
> -- 
> Posted via http://www.ruby-forum.com/.
>


bad idea ihmo - it'll be almost impossible to map valid http request  
names to ruby vars, for instance you'll have

	'a var with a space' #=> ??

	'a var with a /'           #=> ??

etc etc

in addition the only way you can do that is with a heavy duty eval  
process (vars set by eval are only available to further evals) which  
makes for a super slow request loop.  so this sounds like it'll end up  
being a huge stack of evals - not metaprogramming - unless i'm  
misunderstanding.  can you sketch out an example of what you'd like to  
do for us?

cheers.

a @ http://codeforpeople.com/
--
we can deny everything, except that we have the possibility of being  
better. simply reflect on that.
h.h. the 14th dalai lama