From: Eric Mahurin <eric_mahurin@...>
Date: 2005-08-07T11:00:43+09:00
Subject: Re: polymorphism and/or named parameters: the ruby way?

--- Stephan Mueller <d454d@web.de> wrote:

> Hi Eric,
> 
> * Eric Mahurin <eric_mahurin@yahoo.com> [050806 20:25]:
> 
> > What you are talking about is really method overloading not
> > polymorphism in my opinion.
> 
> Yes, I agree. :)
> 
> > My take on the "ruby way" is to not overload methods by
> type
> > like you can easily do in java.  Instead you just make
> multiple
> > distinct methods with each method taking its own "type". 
> This
> > give maximal flexibility with duck-typing.
> >
> > There is no reason you can't make multiple new type class
> > methods that call the normal "new" method - you wouldn't
> need
> > an initialize in that case.
> 
> Something like this?
> 
>  class MyClass
> 
>    def new_s(str)
>      me = super
>      # do sth with str
>      return me     
>    end
> 
>    def new_i(int)
>      me = super
>      # do sth with int
>      return me     
>    end
> 
>    ...  

I was thinking something like this (I don't think the above
does what you want):

class MyClass
  def self.new_s(s)
    obj = new
    # do sth with s and obj
    obj
  end
  def self.new_i(i)
    obj = new
    # do sth with i and obj
    obj
  end
end



		
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