From: Paul Pladijs <ppladijs@...>
Date: 2001-03-18T09:08:50+09:00
Subject: [ruby-talk:12798] Re: Math package


> ----- Original Message ----- 
> From: "ts" <decoux@moulon.inra.fr>
> >  You can have multi-dispatch if you write
> > 
> >    class Object2
> >       def mself(Float a, Float b)
> >           # work with 2 float
> >       end
> >    
> >       def mself(Float a, Numeric b)
> >           # work with float and numeric
> >       end
> >    
> >       def mself(Object a, Object b)
> >           # work with all other objects
> >       end
> >    end
> 
> In which version of Ruby does this work?
> I get "formal argument cannot be a constant"
> 
> Brent

Certainly not in the versions 1.4 and 1.6. 

A while ago someone proposed an extention where
you could specify the type of the formal parameters
of a method. It has never been approved.


Regards,
Paul.