S-expressions（S-表达式） S-expressions（S-表达式） The basic elements of s-expressions are lists and atoms. Lists are delimited by parentheses and can contain any number of whitespace-s...

The Story of Mac: A Just-So Story（Mac 的故事：只是一个故事） The Story of Mac: A Just-So Story（Mac 的故事：只是一个故事） Once upon a time, long ago, there was a company of Lisp programmers. It was ...

DEFMACRO DEFMACRO As you saw in Chapter 3, macros really are defined with **DEFMACRO** forms, though it stands—of course—for DEFine MACRO, not Definition for Mac. The basic sk...

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...

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...

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...

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...

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...

File Output File Output 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 opening ...