রুবি অবজেক্ট ওরিয়েন্টেড প্রোগ্রামিং

class User

  attr_accessor :name, :land

  def initialize
    @name = "আরিফ"
    @land = "বাংলাদেশ"
  end

end

user = User.new

puts user.name
puts user.land

class User

  attr_accessor :name, :land

  def initialize
    @name = "আরিফ"
    @land = "বাংলাদেশ"
  end

end

user = User.new

puts user.name
puts user.land

class User

  attr_accessor :name, :land

  def initialize
    @name = "আরিফ"
    @land = "বাংলাদেশ"
  end

end

user = User.new

puts user.name
puts user.land

class User

  attr_accessor :name, :land

  def initialize
    @name = "আরিফ"
    @land = "বাংলাদেশ"
  end

end

user = User.new

puts user.name
puts user.land

class Message

  def initialize
    @text = "হ্যালো বিশ্ব"
  end

  def show
    @text
  end

  private :show

end

message = Message.new

puts message.send(:show)

class Message

  def initialize
    @text = "হ্যালো বিশ্ব"
  end

  protected

  def show
    @text
  end

  public

  def display
    show
  end

end

message = Message.new

puts message.display

class User

  attr_accessor :message

  def initialize(message)
    @message = message
  end

end

arif = User.new("হ্যালো বিশ্ব")
amir = arif.clone

puts arif.message
puts amir.message

class PHP

  VERSION = "8.2.3"

  def version
    puts self.class::VERSION
  end

end

php = PHP.new

php.version