Classwide method in ruby gem

Question

How can you define c method that is accessible from class One and Two?

module MyGem
  class One
    def a
      c
    end
  end

  class Two
    def b
      c
    end
  end
end

Answer 1

There is few ways, for example inheritance vs mixins.

Using mixins, you can define a Module and include in your classes.

module MyGem
  class One
    include Mixin

    def a
      c
    end
  end

  class Two
    include Mixin

    def b
      c
    end
  end

  module Mixin
    def c
      ...
    end
  end
end