Writing One's Own Class in Ruby

What have I found out so far?

• Definition of Ruby
• Ruby Windows Installer
• Interactive Ruby - Open a new DOS window and type irb --simple-prompt A prompt appears as >>
• Run a Ruby program by typing ruby hello.rb
• Learnt some features of Ruby like comments, naming rules, variables, constants, strings etc.
• Various Text Editors/IDEs like SciTE, NotePad2
• Constructs like the if else and while
• Some methods in Ruby.
• Arrays
• Writing one's own methods

Today, I am going to have a quick look at Writing one's own Class in Ruby.

Let us look at a simple program.

class MotorCycle
  # Every class must contain this method
  def initialize(make, color)
      # Instance variables
    @make = make
    @color = color
    end
  def startEngine
    if (@engineState)
      puts 'Engine Running'
    else
      @engineState = true
      puts 'Engine Idle'
    end
  end
  def dispAttr
    puts 'Color of MotorCycle is ' + @color
    puts 'Make  of MotorCycle is ' + @make
  end
  m = MotorCycle.new('Yamaha', 'red')
  m.startEngine
  m.dispAttr
  m.startEngine
end

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