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Ejemplo de módulos y mixins en Ruby
module A
def self.included( base )
base.send :extend, ClassMethods
base.send :include, InstanceMethods
end
module ClassMethods
def metodo_de_clase
puts 'Método de clase'
end
end
module InstanceMethods
def metodo_de_instancia
puts 'Método de instancia'
end
end
end
class B
include A
end
puts B.metodo_de_clase
puts B.new.metodo_de_instancia
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