Aragorn! [He throws them a rope] [Aragorn grabs Gimli in one hand and the rope with the other as they are pulled up the wall. Just then the Uruk-hai load and fires enormous hooks over the battlements. Hundred of Uruk-hai climb onto super-ladders as they are pulled up towards the walls, the super-ladders locking onto the edge of the battlements with their steel grips. Legolas takes aim as another super-ladder is being pulled up and shoots away one of the ropes. The ladder falls back onto the Uruk-hai army.] THÉODEN Pull everybody back! Pull them back!
>> 指环王2：双塔奇兵The Lord of the Rings: The Two Towers Movie Script

THE FELLOWSHIP OF THE RING SUPER:THE SHIRE....60 YEARS LATER CAMERA TRACKS TO: a Figure lies beneath the dappled sunlight of an old tree.
>> 指环王1：护戒使者 The Lord of the Rings: The Fellowship of the Ring Movie Script

如果没有找到任何方法，method_missing就会被执行；但是因为又super的原因，这里会有迷惑。def method_missing(name, *args, &block) if @hash.respond_to?(name) @hash.send(name, *args, &block) else super end end; Hash.public_instance_methods(false).each do |name| define_method(name) do |*args, &block| @hash.send(name, *args, &block) end; h.public_methods(false).sort.take(5); 实现了Hash的方法。
AuditDecorator @logger = Logger.new($stdout); private def method_messing(name, *arg, &block) @logger.info("calling '#{name}' on #{@object.inspect}"); @object.send(name, *args, &block); define_method更加适合做这个了。 mod=Module.new do object.public_methods.each do |name| define_method(name) do |*args, &block| @logger.info("") @object.send(name, *args, &block) end end end extend(mod) ; 创建了一个匿名的模块。 —— define_method恢复了内省方法。。 respond_to? and respond_to_missing?
>> Effective Ruby

def self.inherited(subclass) { super; handlers << subclass};
>> Effective Ruby

raise("coffee machine low on water") => raise(RuntimeError, "coffee machine low on water")
异常的处理是基于类型的。Exception or StandardError ; class CoffeeTooWeakError < StandardError; end
raise(CoffeeTooWeakError, "coffee to water ratio too low")
super("invalid temperature: #@temperature") raise(TemperatureError.new(180))
>> Effective Ruby

def initialize(name,grade) {super(name; @grade = grade}; dup和clone 也可以构建新对象的副本,可以定义initialize_copy方法来初始化副本。
>> Effective Ruby

super 会把宿主方法的所有参数全部传递过去.enclosing method;
>> Effective Ruby

Well, you'd be working on the cutting edge. You'd be exposed to the kind of technology you couldn't see anywhere else because we've classified it. Super string theory, Chaos Math, Advanced algorithms--
>> Good Will Hunting (1997)Movie Script