Can I add class methods and instance methods from the same module?

Question

Newbie question:

I know how include and extend work, what I am wondering is if there is a way to get both class and instance methods from a single module?

This is how I do it with two modules:

module InstanceMethods
    def mod1
        "mod1"
    end
end

module ClassMethods
    def mod2
        "mod2"
    end
end

class Testing
    include InstanceMethods
    extend ClassMethods 
end

t = Testing.new
puts t.mod1
puts Testing::mod2

Thanks for taking your time ...

Answer 1

Yes. It's exactly as simple as you would expect, due to the genius of ruby:

module Methods
    def mod
        "mod"
    end
end

class Testing
    include Methods # will add mod as an instance method
    extend Methods # will add mod as a class method
end

t = Testing.new
puts t.mod
puts Testing::mod

Or, you could do:

module Methods
    def mod1
        "mod1"
    end

    def mod2
        "mod2"
    end
end

class Testing
    include Methods # will add both mod1 and mod2 as instance methods
    extend Methods # will add both mod1 and mod2 as class methods
end

t = Testing.new
puts t.mod1
puts Testing::mod2
# But then you'd also get
puts t.mod2
puts Testing::mod1

Answer 2

module Foo
 def self.included(m)
   def m.show1
     p "hi"
   end
 end

 def show2
   p "hello"

 end
end

class Bar
 include Foo
end

Bar.new.show2 #=> "hello"
Bar.show1 #=> "hi"