From: Eric Mahurin <eric_mahurin@...>
Date: 2005-06-08T05:09:24+09:00
Subject: Re: making a duck

--- gabriele renzi <surrender_it@remove-yahoo.it> wrote:

> Eric Mahurin ha scritto:
> > This brings us
> > back to the topic I talked about earlier - unbind/rebind
> procs.
> >  It would be nice if we could do the same thing to a Proc
> that
> > these methods can do internally
> 
> ... would dynamic variables be enough? Christian Neukirchen
> has a nifty 
> implementation of them on his blog.

From what I saw, this didn't seem much different than another
space for global variables.  The main ability I was wanting was
to be able to replace local variables with their current value
in a proc.  I think this would make the ugly *eval(string)
methods rarely needed.  I just looked through the stdlib and
found almost every occurence of *eval(string) and found almost
every one looks kind of like this:

name = ...
var = ...
eval("def #{name} .... #{var} .... end")

This would work:

name = ...
var = ...
define_method(name.to_sym,proc{.... var ....}.unbind)

assuming that Proc#unbind replaced "var" with its current
value.

A define_class_method method would also be useful.  Otherwise
there would be no equivalent to the above when doing eval("def
self.#{name} .... end").



		
__________________________________ 
Discover Yahoo! 
Find restaurants, movies, travel and more fun for the weekend. Check it out! 
http://discover.yahoo.com/weekend.html