From: Ittay Dror <ittay.dror@...>
Date: 2008-07-14T20:04:34+09:00
Subject: [NEWBIE] Help with class instance variables

Hello,

The code below prints:
#<Gem::Platform:0x..fdbdf0696 @cpu="x86", @os="linux", @version=nil>
--

that is, the @arch, @os and @classifier are empty.

(if i set these variables in the id method, they work fine)
(Gem::Platform.local is a class method that creates a new Gem::Platform
instance and returns it)

thank you for your help,
ittay

code below:

require 'rubygems'
require 'rubygems/version'
require 'rubygems/platform'

module Platform
  class << self
    attr_reader :arch
    attr_reader :os
    attr_reader :classifier
    @arch = Gem::Platform.local.cpu
    @os = Gem::Platform.local.os
    @classifier = Gem::Platform.local.version

    def id
      "#{@arch}-#{@os}-#{@classifier}"
    end
  end
end

puts Gem::Platform.local.inspect
puts Platform.id
-- 
Posted via http://www.ruby-forum.com/.