From: Dominic Rose <ofusiono@...>
Date: 2010-05-11T00:27:29+09:00
Subject: Re: creating static variables

Last time I had this sort of problem I create a @@var in the class that 
contains the method used.

So you could do something like

@@counter = 0
def update_counter value
    @@counter += value
end

p @@counter #=> 0
update_counter 12
p @@counter #=> 12
update_counter 5
p @@counter #=> 17
-- 
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