e5.4-2.rb

来自「学习ruby比较好的入门教材,可以」· RB 代码 · 共 14 行

#   E5.4-2.rb    
class Person    
  def talk
    puts "Today is Saturday. "    
  end  
end

p1=Person.new
p1.talk

class Person    
  undef :talk
end
#p1.talk