From: Alex Combas <alex.combas@...>
Date: 2006-01-26T12:05:44+09:00
Subject: class variable weirdness

I was fooling around with class variables tonight, and I know this is
pretty silly, but forsome reason this code will work when in
its own class, as you can see in class A and class B, but when I
put the code together into class C I get an error

class_vars.rb:26: undefined method `up=' for C:Class (NoMethodError)

Can anyone explain why this is happening?

class A
  @@foo=1
  def self.foo=(n)
    @@foo = n
  end
end
#prints "10"
puts "%s" % A.foo=10

class B
  @@foo=1
  def self.up
    @@foo+=1
  end
end
#prints "2"
puts "%s" % B.up

class C
  @@foo=1
  def self.foo=(n)
    @@foo = n
  end
  def self.up
    @@foo+=1
  end
end
#should print "2, 10" but it doesn't work for me.
puts "%s, %s" % (C.up,C.foo=10)


--
Alex Combas
http://noodlejunkie.blogspot.com/