Daniel Berger
5/18/2005 2:21:00 PM
ES wrote:
> Daniel Berger wrote:
> > Hi all,
> >
> > Well, I *think* it's the facade pattern. Anyway, I'm trying to do
> > something like this:
> >
> > class Foo < String
> > def method_a
> > Bar.method_a(self)
> > end
> > def method_b
> > Bar.method_b(self)
> > end
> > end
> >
> > This is easy enough to do by hand for a few methods, but what if I
have
> > many methods from Bar I want to use?
> >
> > I thought maybe there was a trick with Forwardable I could use, but
I
> > don't see how. Any ideas on how to shortcut this?
>
> You left too quick :) You are looking at something like this:
>
> class Class
> def forward(mod, *methods)
> methods.each do |method|
> # Substitute mod with const_get(mod) if you want to use
:ModName
> define_method(method) {|| mod.send(method, self)}
> end
> end
> end
>
> class A
> def A.foo(x)
> puts "A.foo: #{x}"
> end
> end
>
> class B
> forward A, :foo
> end
>
> B.new.foo # => A.foo
>
> > Regards,
> >
> > Dan
>
> E
>
> --
> template<typename duck>
> void quack(duck& d) { d.quack(); }
Thank you - that will work beautfully. :)
Regards,
Dan