From: Rick DeNatale <rick.denatale@...>
Date: 2009-05-16T04:10:26+09:00
Subject: Re: obj.attr(qualifier) = value -- possible?

On Fri, May 15, 2009 at 3:00 PM, Michael Schuerig <michael@schuerig.de> wrote:
>
> I want to write a method that can be called like this
>
>  obj.attr(qualifier) = value
>
> So far, I don't see how to achieve this. I've tried
>
> class C
>  def attr=(qualifier, value)
>    ...
>  end
> end
>
> as well as
>
> class D
>  def attr(qualifier)
>    Proxy.new(self, qualifier)
>  end
>  class Proxy
>    def =(value)
>      ...
>    end
>  end
> end
>
> Neither is valid Ruby, apparently. Is there another, working way?

I don't think you can get the calling syntax you want.  The best you
can do I think is

obj.attr = qualifier, value


-- 
Rick DeNatale

Blog: http://talklikeaduck.denhaven2.com/
Twitter: http://twitter.com/RickDeNatale
WWR: http://www.workingwithrails.com/person/9021-rick-denatale
LinkedIn: http://www.linkedin.com/in/rickdenatale