Threading macros Hint::Parens optional Reading Clojure code Rewriting the code with threading macros Hint::Macroexpand Threading macros The thread-first -> and thread-la...

CDs and Records（CD 和记录） CDs and Records（CD 和记录） To keep track of CDs that need to be ripped to MP3s and which CDs should be ripped first, each record in the database will conta...

Client Libraries Officially-supported Kubernetes client libraries Community-maintained client libraries Client Libraries This page contains an overview of the client libraries...

Chapter 10 练习 (Exercises) Chapter 10 练习 (Exercises) 如果 x 是 a ， y 是 b 以及 z 是 (c d) ，写出反引用表达式仅包含产生下列结果之一的变量: ( a ) (( C D ) A Z ) ( b ) ( X B C D ) ( c ) (...

Looping Looping Control constructs are the other main kind of looping constructs. Common Lisp’s looping facilities are—in addition to being quite powerful and flexible—an inter...

6.6 示例：函数构造器 (Example: Function Builders) 6.6 示例：函数构造器 (Example: Function Builders) Dylan 是 Common Lisp 与 Scheme 的混合物，有着 Pascal 一般的语法。它有着大量返回函数的函数：除了上一节我们所看过的 complement ，Dylan...

7.5 宏字符 (Macro Characters) 7.5 宏字符 (Macro Characters) 一个宏字符 (macro character)是获得 read 特别待遇的字符。比如小写的 a ，通常与小写 b 一样处理，但一个左括号就不同了: 它告诉 Lisp 开始读入一个列表。 一个宏字符或宏字符组合也称作 read-macro...

Good Object-Oriented Design Good Object-Oriented Design That’s about it for the main features of Common Lisp’s object system. If you have lots of experience with object-oriente...

File Output（文件输出） File Output（文件输出） To write data to a file, you need an output stream, which you obtain by calling OPEN with a :direction keyword argument of :output . When ...

宏 宏 许多其他 Lisps 允许您编写类似于 (def x 100) 定义值100 到x 上。在我们的 lisp 中，这会不起作用，因为它会尝试计算x 在环境中的存储为x 的任何值。在其他 Lisps 中，这些函数称为宏，当遇到它们时，它们会停止对其参数的计算，并对它们进行未计算的操作。它们让你编写看起来像普通函数调用的东西，但实际上做的是复杂而...