Ruby Class

A simple Ruby class.

class Rectangle
  def initialize(length, width)
    @length = length
    @width = width
  end

  def area
    @length * @width
  end
end

rect = Rectangle.new(4,5)
rect.area  # => 20

They can also have class methods:

class Hello
  def self.say_hi
    puts "HI"
  end
end

Hello.say_hi # "HI