A class is itself an object.


class Array
  def array_of_ten
    (1..10).to_a
  end

end

arr = Array.new
ten = arr.array_of_ten
p ten

1.	To create a class in Ruby, you simply use the class statement.
2.	A class is defined with the class keyword, followed by an end.
3.	names of classes in Ruby start with a capital letter
4.	class template
5.	A simple class that's been documented using comments.
6.	Your class with constructor, to string, setter, getter and inspect
7.	Your own class with inspect method
8.	To embed a module in a class, you use the include statement in the class: include modulename
9.	Class with symboles
10.	Class variable as condition variable

A class is itself an object. : Class Defintion « Class « Ruby