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Ruby
question about class variables and instance variables
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[QUOTE="Eric Hodel, post: 4503433"] instance variables are always stored in the instance self. class variables are shared between a class, its instances, its subclasses and its subclass instances. Consider: class A @@a_1 = :one def initialize @@a_2 = :two end end A.new class B < A p @@a_1, @@a_2 @@b_1 = :three def initialize @@b_2 = :four end def print p @@a_1, @@a_2, @@b_1, @@b_2 end end class A x = @@b_1 rescue 'not found' y = @@b_2 rescue 'not found' p x, y end B.new.print [/QUOTE]
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