EXTERIOR BAILEY PARK DAY CLOSE SHOT Sign hanging from a tree "Welcome to Bailey Park." CAMERA PANS TO follow George's car and the old truck laden with furniture as they pass we hear Martini's voice singing "O Sole Mio." Bailey Park is a district of new small houses, not all alike, but each individual. New lawns here and there, and young trees. It has the promise when built up of being a pleasant little middle class section.
>> It's a Wonderful Life Movie Script

"Welcome home, Mr. Bailey" EXTERIOR OLD GRANVILLE HOUSE �� NIGHT MEDIUM LONG SHOT �� An old-fashioned, run-down house, unpainted and warped by the weather. It once had class but has not been lived in for years. This is the house that George and Mary will live in from now on. The rain is pouring down. A faint glow of light shines out from bottom windows.
>> It's a Wonderful Life Movie Script

You see, if you shoot pool with some employee here, you can come and borrow money. What does that get us? A discontented, lazy rabble instead of a thrifty working class. And all because a few starry-eyed dreamers like Peter Bailey stir them up and fill their heads with a lot of impossible ideas. Now, I say . . .
>> It's a Wonderful Life Movie Script

Immigrants undertook a Pacific Ocean journey of three weeks by ship. Many passengers could barely afford steerage class travel. Most had to borrow money from their relatives and neighbors.
>> 2025-7-genius

def glass_case_of_emotion x="I'm in a " + __method__.to_s.tr('_',' ') binding; binding 可以获得当前的临时域并把这个临时域封装到Binding对象中作为返回结果。这个指定的上下文是eval方法的第二个参数； eval("x", glass_case_of_emotion); class_eval很像是重新打开类，实际上是被定义在Module里面，only被模块和类使用。= moudle_eval; instance_eval访问实例变量；class_eval定义实例方法。 class Widget attr_accessor(:name, :quantity) def initialize(&block) instance_eval(&block) if block end ;;; w= Widget.new do |widget| widget.name= "Elbow Grease" ; @quantity = 0; end ; instance_exec, class_exec, moudle_exec; only accept 代码块， no string； object.instance_eval("@#{name} = DEFAULT")
module Reset def self.reset_var (object, name) object.instance_exec("@#{name}.to_sym") do |var| const = self.class.const_get(:DEFAULT); instance_variable_set(var, const) end ...
>> Effective Ruby

Ruby的hook在类和模块的级别实现元编程。在类和模块中定义方法-单例方法。混合引入模块时，ruby都会调用钩子方法included or extended；这个钩子可以看作是一个，通知通知当前模块即将要被扩展到另一个类中。代理的方法只是重定向了。interited; method_added method_removed method_undefined 实例方法；singleton_method_added singleton_method_remove singleton_mothod_undefined 可以被用于模块方法或类方法。这些方法只接受一个symbol ,方法名； Triggers singleton_method_removed(:hello) class << self; remove_mothod(hello);end
>> 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

is a，还是 has a， 委托就是有一个。。。require('forwardable'); class RaisingHash extend(Forwardable) include(Enumerable) def_delegators(@hash, :[], :[]=, :delete, :each, :keys, :values, :length, :empty?, :has_keys) end Forwardable模块让使用委托的过程变得容易。 del_delegator(@hash, :delete, :erase!)
>> Effective Ruby

@@开头的变量是类变量，bind在类上。； 单例模式；private_class_method(:new, :dup, :clone) def self.instance @@single ||= new; 其实类方法是一个假象，类方法实际上是一个类的对象的实例方法。Singleton模块作为Ruby标准库的一部分；require('singleton'); class Configuration include(Singleton) end;
>> Effective Ruby

0 is true; true.class > TrueClass; false.class > FalseClass; 只有 false 和 nil 为false；如果你要区分false和nil，可以使用nil? 或 == 操作符，并将false作为左操作对象，以防止 == 这个方法被覆盖。
>> Effective Ruby

Well, I'm gonna experiment on you for my anatomy class, then go.
>> Good Will Hunting (1997)Movie Script

(to class) Well, it seems we're in the presence of greatness. Professor Gerald Lambeau is a Field's Medal winner.
>> Good Will Hunting (1997)Movie Script