From: Trans <transfire@...>
Date: 2007-02-09T22:30:05+09:00
Subject: Re: Your favorite bit of ruby code?

On Feb 9, 5:39 am, "Erik Veenstra" <erikv...@gmail.com> wrote:
> In general, AFAIK, an initialize can be skipped if all it does
> is a super with the same arguments.
>
> What am I missing? I want to learn... ;]

Oh right. Yes, it can be removed in this case. I incidently left it b/
c the full version of Functor also stores the function and allows for
passthru args. Ie.

  class Functor < Proc

    private *instance_methods.select { |m| m !~ /(^__|^\W|^binding
$)/ }

    def initialize(*arguments, &function)
      @arguments = arguments
      @function = function
      super(&function)
    end

    def method_missing(op, *args, &blk)
      call(op, *(@arguments + args), &blk)
    end

    def to_a ; @arguments ; end
    def to_proc ; @function ; end
  end

Passthru arguments aren't strictly neccessary in Ruby b/c of closures,
but they are proper. BTW I've never been sure what to call the #to_a
and #to_proc methods, those are the best reader method names I've come
up with. But then again maybe full accessors would desriable. In any
case they are simply extra features, and not germane to the core
defintion, which is why I left them out of "my favorite bit of ruby".

Make sense?
T.