module MyLib
module ClassMethods
def class_method
puts "in MyLib::ClassMethods"
end
end
end
module MyLib
def self.included(receiver)
puts "MyLib is being included in #{receiver}!"
receiver.extend(ClassMethods)
end
end
class MyClass
include MyLib
end
# MyLib is being included in MyClass!
MyClass.class_method
# This method was first defined in MyLib::ClassMethods
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