Is it okay to assign an instantiated class to a class variable in Ruby? -

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is okay instantiate class , assign class variable in class b call a's methods in b?

class   ... end  class b   @@a = a.new    def method_b     @@a.method_a   end end

you can wrap methods in module , include them in class(for instance methods only)

module foo   def method_a     p 'hello'   end end  class b   include foo   def method_b     method_a   end end  b.new.method_b

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