listing methods of class and object (instance)

Copyclass Myclass
  def one
    puts "one is called"
  end
end    

ss = Myclass.new

puts Myclass.methods 
# returns array of methods for the class. Includes both class and instance methods and methods inherited from parents.
puts Myclass.instance_methods
# returns array of instance methods for the class
puts ss.methods
# returns array of methods which can be called on the instance. same result as above.
puts Myclass.instance_methods(false)
# returns array of instance methods excluding inherited methods

Copyss.respond_to? :method_name 
#returns true if the method can be called else false. 
Myclass.respond_to? :method_name

CopyMyclass.ancestors
# returns an array of parent classes for a given class.