Un codigo de clase de ruby...



class Song
attr_reader :name, :artist, :duration, :play
attr_writer :name, :artist, :duration

def initialize(name, artist, duration)
@name = name
@artist = artist
@duration = duration
@play = false
end

def to_s
"Song: #@name--#@artist (#@duration)"
end

def reproducir
puts @play = true
end

def detener
puts @play = false
end

def prot
puts "Evento Protegido..."
end

def privado
puts "Evento Privado..."
end

public :reproducir, :detener
protected :prot
private :privado
end
song = Song.new("Corazón espinado", "mana", 260)
puts song.to_s
puts song.name
puts song.name = "Como duele"
puts song.name
puts song.reproducir
puts song.detener