From: Hal Fulton <rubyhacker@...>
Date: 2012-07-02T22:21:24+09:00
Subject: Question re class instance variable anomaly

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I was *certain* I had done this sort of thing before -- can someone
tell me what's going on?

I'm up much too early -- likely a short circuit between my ears.

Basically -- Baz acts as I want/expect, and Foo does not.

Why??

Thanks,
Hal


####

class Foo
  class << self
    attr_accessor :bar
    Foo.bar = "hello"
  end

  def initialize
    puts "Foo: #{Foo.bar.inspect}"
  end
end

class Baz
  class << self
    attr_accessor :bar
    @bar = "hello"
  end

  def initialize
    puts "Baz: #{Baz.bar.inspect}"
  end
end


Foo.new
Baz.new

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I was *certain* I had done this sort of thing before -- can someone<br>tell=
 me what&#39;s going on?<br><br>I&#39;m up much too early -- likely a short=
 circuit between my ears.<br><br>Basically -- Baz acts as I want/expect, an=
d Foo does not.<br>
<br>Why??<br><br>Thanks,<br>Hal<br><br><br>####<br><br>class Foo<br>=A0 cla=
ss &lt;&lt; self<br>=A0=A0=A0 attr_accessor :bar<br>=A0=A0=A0 Foo.bar =3D &=
quot;hello&quot;<br>=A0 end<br><br>=A0 def initialize<br>=A0=A0=A0 puts &qu=
ot;Foo: #{Foo.bar.inspect}&quot;<br>
=A0 end<br>end<br><br>class Baz<br>=A0 class &lt;&lt; self<br>=A0=A0=A0 att=
r_accessor :bar<br>=A0=A0=A0 @bar =3D &quot;hello&quot;<br>=A0 end<br><br>=
=A0 def initialize<br>=A0=A0=A0 puts &quot;Baz: #{Baz.bar.inspect}&quot;<br=
>=A0 end<br>end<br><br><br>
Foo.new<br>Baz.new<br><br>

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