From: "Shot (Piotr Szotkowski)" <shot@...>
Date: 2008-05-07T04:45:11+09:00
Subject: Re: attr_accessor for class variable?

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Robert Klemme:

> On 05.05.2008 17:03, sayoyo Sayoyo wrote:

>> Is there an equivalent for attr_acessor for the class varialbles?
>> or I have to write a function each time I wish to exppse the class
>> varaible to other clasess?

> You can just use attr_* family of methods - but you need to apply them
> to a different object, namely the singleton class of the class object:

> irb(main):001:0> class Foo
> irb(main):002:1> class<<self
> irb(main):003:2> attr_accessor :bar
> irb(main):004:2> end
> irb(main):005:1> end

Is this the canonical way to have config objects in applications?

So far I=E2=80=99m stuck with



module ArtDecomp class Config

  include Singleton

  attr_accessor :debug, :qu_method, :qv_method, :silicone

  def initialize
    @debug     =3D false
    @qu_method =3D :graph_merger
    @qv_method =3D :graph_merger
    @silicone  =3D Set[Arch[4,2], Arch[5,1]]
  end

  def max_pins
    @silicone.map{|arch| arch.pins}.max
  end

  def max_pons
    @silicone.map{|arch| arch.pons}.max
  end

  def reset
    initialize
  end

end end



Hence, my code is either cropped with either Config.instance.debug
ugliness or @config =3D Config.instance; #=E2=80=A6; @config.debug stuff.

I=E2=80=99d like to have a clean Config.debug syntax, while still having the
ability to initialise it (currently with defaults, like above; in the
future with some optional Trollop stuff added).

-- Shot
--=20
I actually am proud of the stacking status bar. My
contribution to the fast-paced world of Curses-based
interfaces, we'll call it.   -- William Morgan, sup-talk

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