Ruby: Is it possible to define a class method in a module?

Question

Say there are three classes: A, B & C. I want each class to have a class method, say self.foo, that has exactly the s

Answer 1

Just wanted to extend Oliver's answer Define Class methods and instance methods together in a module.

module Foo
 def self.included(base)
   base.extend(ClassMethods)
 end
 module ClassMethods
   def a_class_method
     puts "ClassMethod Inside Module"
   end
 end

 def not_a_class_method
   puts "Instance method of foo module"
 end
end

class FooBar
 include Foo
end

FooBar.a_class_method

FooBar.methods.include?(:a_class_method)

FooBar.methods.include?(:not_a_class_method)

fb = FooBar.new

fb.not_a_class_method

fb.methods.include?(:not_a_class_method)

fb.methods.include?(:a_class_method)