gistfile1.rb

module Actions
  def toto
    p "toto"
  end
end


class Foo
end

Foo.new.toto
# => NoMethodError: undefined method `toto' for #<Foo:0x10f3808>

Foo.toto
# => NoMethodError: undefined method `toto' for Foo:Class

f = Foo.new
f.extend Actions
f.toto
# => "toto"

f2 = Foo.new
f2.toto
# => NoMethodError: undefined method `toto' for #<Foo:0x10ec968>

class Bar
  include Actions
end

b = Bar.new
b.toto
# => "toto"

Bar.toto
# => NoMethodError: undefined method `toto' for Bar:Class

class Boz
  extend Actions
end

Boz.toto
# => "toto"

bz = Boz.new
bz.toto
# => NoMethodError: undefined method `toto' for #<Boz:0x10dde90>