词汇：block
n. 块；街区；障碍物；大厦
相关场景
- 34.Proc:
- code block is a Proc; 弱Proc,参数可以不一致。强Proc参数数量严格一致。lambda 为强Proc.
func= ->(x) {"Hello #{x}} ; func.call("a","b") #ArgumentError: wrong number of arguments(2 for 1);
def test(&block) block.lambda? end;>> Effective Ruby- 31. eval; instance_eval定义的是单例方法；:
- 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- 30.define_method or method_missing:
- 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- Low motivation, low self-esteem. high anxiety: the block goes up. the filter goes up. the input can not get in.both getting comprehensible input, one makes progress, the other doesn't. One is open to the input, the other is closed.>> comprehensible input - One way only one way to acquire a language
- If the student isn't motivated, if self-esteem is low, if anxiety is high , if the student is on the defensive, if the student thinks the language class is a place where his weaknesses will be revealed. he may understand the input, but it won't penetrate. It won't reach those parts of the brain that do language acquisition. A block keeps it out. We call this block the affective filter.>> comprehensible input - One way only one way to acquire a language
- flow ; flown , rockall (all of rock); a block of flats; too dangerous ; even ; ever;>> Taxi
- RHETT:
- Observe my hands, my dear. I could tear you to pieces with them. And I'd do it if it'd take Ashley out of your mind forever. But it wouldn't. So I'll remove him from your mind forever this way. I'll put my hand so. One on each side of your head. And I'll smash your skull between them like a walnut. That'll block him out.>> 飘 Gone with the Wind Movie Script
- Once he landed on the roof of a block of flats and on another occasion, he landed in a deserted car park.
有一次他降落在一栋公寓楼的屋顶上，另一次他又降落在一个废弃的停车场。>> Taxi- IN COLLAPSIBLE C:
- BRUCE ISMAY has his back to the ship, unable to watch the great steamer die. He is catatonic with remorse, his mind overloaded. He can avert his eyes, but he can't block out the sounds of dying people and machinery.
布鲁斯·伊斯梅背对着船，无法看着那艘大船死去。他因悔恨而精神紧张，头脑超负荷。他可以转移目光，但他无法屏蔽垂死的人和机器的声音。>> 泰坦尼克号 Titanic (1997) Movie Script- CUT TO:
- 229 INT. STAIRWELL Jack and Rose pound up the steps as white water swirls up behind them. PULL BACK to reveal that a steel gate blocks the top of the stairs. Jack SLAMS against the fate, gripping the bars.>> 泰坦尼克号 Titanic (1997) Movie Script
- Tommy has his hands on the bars of the steel gate which blocks the head of the stairwell. The crew open the gate a foot or so and a few women are squeezing through.>> 泰坦尼克号 Titanic (1997) Movie Script
- The boat lurches as the falls start to pay out through the pulley blocks.>> 泰坦尼克号 Titanic (1997) Movie Script
- CUT TO:
- 36 EXT. SOUTHAMPTON DOCKS / TITANIC - DAY A VIEW OF TITANIC from several blocks away, towering above the terminal buildings like the skyline of a city. The steamer's whistle echoes across Southampton.>> 泰坦尼克号 Titanic (1997) Movie Script
- Have them kill the power of the whole block.>> Spider-Man 3 蜘蛛侠 3 Movie Script
- THE ANCIENT ONE (2012): You're about... five years too early. Stephen Strange is currently performing surgery about twenty blocks that way. What do you want from him?>> Avengers: Endgame 复仇者联盟4：终局之战 Movie Script
- AKIHIKO:
- [Japanese]俺らがだと? 気でも狂ったか! (Orera ga dato? Ki demo kurutta ka!) [he gestures to all the scattered bodies of his henchmen and chuckles] (English:WE hurt people? You're crazy!) [Akihiko charges, which Ronin immediately blocks. Both clang swords for two seconds, seeming that the yakuza leader has the upper hand, but Ronin punches him in the face, and sword-points him to his throat, in which Akihiko is temporarily petrified.] [He lowers down his sword as if he is about to surrender, but charges again at Ronin. Both swords clashed as Ronin slices his stomach, losing stamina, but gaining more strength from his rage.]>> Avengers: Endgame 复仇者联盟4：终局之战 Movie Script
- Marty:
- A block passed Maple, that's John F. Kennedy Drive.>> Back to the Future 回到未来 1985 Movie Script
- Sam:
- It's uh, the other end of town, a block past Maple.>> Back to the Future 回到未来 1985 Movie Script
- CAPTAIN OF THE NEVADA We're not gonna make it -- and if we go down here we block the channel... Beach her, there!>> Pearl Harbor 珍珠港（2001） Movie Script
- There's a playground a few blocks away from here.>> 2024-4 There aren't any seats close to the stage
- The park is only a few blocks away from here.>> 2024-4 There aren't any seats close to the stage
- If we don;T give them the ratings, they'll go to moody's right down the block.>> The Big Short大空头（2015） Movie Script
- Actually, my name is jeong, and... I do speak English Jared likes to say it though.. Because he thinks it makes me seem more authentic and... I got second in that national math competition so... you're offering us a chance to short this pile of blocks?>> The Big Short大空头（2015） Movie Script
- EXT. TENEMENT BLOCK - DAY SIGNOR ROBERTO, a pompous, rather well-dressed Patrone angrily walks down the steps of one of his tenement buildings.>> The Godfather: Part II 教父2 1974 Movie Script
- Numerous enemy garrisons are left with two alternatives, surrender or annihilation... One full block away, Bussetta rides in the front seat of the dark Mercury, driving slowly, giving Michael his privacy, but never letting him out of Bussetta's sight.>> The Godfather: Part II 教父2 1974 Movie Script