From: Love U Ruby <lists@...>
Date: 2013-05-14T03:23:17+09:00
Subject: callback limitations with `inherited`

class C
def self.inherited(subclass)
puts "#{self} just got subclassed by #{subclass}."
end
end
class D < C
end

The limits of the inherited callback:

*Everything has its limits, including the inherited callback. When D
inherits from C, C is D’s superclass; but in addition, C’s singleton
class is the superclass of D’s singleton class. That’s how D manages to
be able to call C’s class methods. But no callback is triggered. Even if
you define inherited in C’s singleton class, it’s never called.*

can anyone help me what the lines above inside ** means?

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