json_encode can be used to escape strings, numbers, lists, and dicts. In this example, the JavaScript variable x will be the corresponding JavaScript 28 Chapter 6. DocumentationTornado Documentation, Release positional arguments if it’s unnamed). To support a method not on this list, override the class variable SUPPORTED_METHODS: class WebDAVHandler(RequestHandler): SUPPORTED_METHODS = RequestHandler.SUPPORTED_METHODS ser") if user_cookie: return json.loads(user_cookie) return None • It may be set as a normal variable, typically from an overridden prepare(): @gen.coroutine def prepare(self): user_id_cookie = self

json_encode can be used to escape strings, numbers, lists, and dicts. In this example, the JavaScript variable x will be the corresponding JavaScript type (string, number, array, or object), and not the JSON-encoded positional arguments if it’s unnamed). To support a method not on this list, override the class variable SUPPORTED_METHODS: class WebDAVHandler(RequestHandler): SUPPORTED_METHODS = RequestHandler user_cookie: return json.loads(user_cookie) return None It may be set as a normal variable, typically from an overridden prepare():@gen.coroutine def prepare(self): user_id_cookie =

"); println!("Please input your guess."); 这些代码仅仅打印提示，介绍游戏的内容然后请求用户输入。 使用变量储存值 接下来，创建一个 变量（variable）来储存用户输入，像这样： 23/562Rust 程序设计语言 简体中文版 let mut guess = String::new(); 现在程序开始变得有意思了！这一小行代码发生了很多事。我们使用 Please type a number!: ParseIntError { kind: InvalidDigit } note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace 输入 quit 将会退出程序，同时你会注意到其他任何非数字输入也一样。这至少可以说是不理 想的，我们想要当猜测正确的数字时游戏停止。 Compiling variables v0.1.0 (file:///projects/variables) error[E0384]: cannot assign twice to immutable variable `x` --> src/main.rs:4:5 | 2 | let x = 5; | - first assignment to `x` 3 | println