From: Ned Konz <ned@...>
Date: 2001-09-28T01:50:28+09:00
Subject: [ruby-talk:21781] Re: Transparent Proxies

On Thursday 27 September 2001 09:28 am, Paul Brannan wrote:

> The reason SimpleDelegate is so slow is that it must create new delegate
> methods every time a new object is created; DelegateClass(Foo) does this
> only once, when the class itself is created.  However, if Foo changes
> (i.e. if methods are added or removed) then DelegateClass(Foo) will not
> not get the new methods, and it will still try to delegate the removed
> methods.

There is another way to handle the proxy problem: use method_missing to catch 
undefined methods, and in method_missing use eval to define the delegation 
method.

That way, you don't have the startup delay of SimpleDelegator, and methods 
only incur the compilation penalty once.

-- 
Ned Konz
currently: Stanwood, WA
email:     ned@bike-nomad.com
homepage:  http://bike-nomad.com