From: "v.nainar" <vnainar@...>
Date: 2005-09-28T15:03:58+09:00
Subject: class variables

Hello!

	What is wrong with the following code? Why is  @@id  incremented before 
and not after the assignment? .  ( Sorry  if this sounds silly and I have
overlooked something obvious )

	
#!/usr/local/bin/ruby
class Foo
  @@id=1
  def initialize(s)
    @s=s
    @id=setId()
  end
  def setId()
    @id=@@id
    @@id+=1
  end
end

foo1=Foo.new("one")
foo2=Foo.new("two")
foo3=Foo.new("three")
p foo1,foo2,foo3
Output ->
# <Foo:0xb7d6b4f0 @id=2, @s="one">   # why is @id not 1
# <Foo:0xb7d6b4c8 @id=3, @s="two">   # and 2
# <Foo:0xb7d6b4a0 @id=4, @s="three"> # and 3 ?