From: Intransition <transfire@...>
Date: 2012-03-27T07:45:44+09:00
Subject: include over extend ?

I have a set of modules that contain methods intended for the class
level. As such, does in make more sense to use straight interface:

    class Foo
      extend ModuleInQuestion

      ...
    end

Or, would you say it is better to refactor to use more idiomatic
inclusion, using some form ClassMethods/included callback allowing:

    class Foo
      include ModuleInQuestion

      ...
    end

What say you?