From: "Alan (Ursus Major)" <ursus@...>
Date: 2002-10-30T12:56:38+09:00
Subject: Re: executing a proc passed as an argument?

Thanks, Michael

Alan

"michael libby" <x@ichimunki.com> wrote in message
news:200210292004.31296.x@ichimunki.com...
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> On Tuesday 29 October 2002 19:36, Alan (Ursus Major) wrote:
> > class Callback
> >
> >  def initialize (v, &m)
> >   @cb = m          #store a callback method
> >   @v = v            #store an argument to pass the method
> >  end
> >
> >  def exe
> >   #  @cb(@v)            #execute the stored method (not this way!)
>
> @cb.call(@v) #invokes method stored in @cb with @v as argument
>
> >   p "called exe, value = #{@v}"      #stored the value, and
> >   p "stored method =  #{@cb}"      #maybe the proc?
> >  end
> > end
> >
> > x = Callback.new("a value", &proc{|v| p v})
>
> x = Callback.new("a value"){|v| p v}   #much prettier, imho
>
> > x.exe
>
> Hope this helps.
>
>  -michael
>
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