Emacs Lisp和Common Lisp之间的主要区别是什么？ [英] What are the major differences between Emacs Lisp and Common Lisp?

问题描述

我想学习lisp语言，因为我的编辑器是emacs，我更喜欢emacs lisp。

任何人都可以给我一些建议来学习lisp，emacs lisp，或共同的lisp？

这两者之间的主要区别是什么？

解决方案

有很多交叉，特别是在初学者层面，所以无论哪一个开始，都将转移到另一个。

一些主要区别： / p>

• elisp传统上使用动态范围规则; Common Lisp使用词汇范围规则。使用动态范围，一个函数可以访问在调用函数中声明的局部变量，并且一般都没有使用。 Emacs有一个模拟词汇范围的 lexical-let 表单，并且emacs的最新版本在逐个函数的基础上允许可选的词法作用域。




• elisp没有关闭，这使得组合功能和currying困难。有一个应用部分功能类似于currying工作。请注意，在Emacs 24中引入的 lexical-let 表单可以通过词汇作用域生成闭包。




• 随着时间的推移，很多常见的Lisp库不能在elisp中使用。一个子集由elisp c> c




• elisp不提供尾调用优化。

I want to learn the lisp language, since my editor is emacs, I prefer emacs lisp.

Can anyone give me some suggestions to learn lisp, emacs lisp, or common lisp?

What are the major differences between those two?

解决方案

There's quite a bit of crossover, especially at the beginner level, so whichever you start with will mostly transfer to the other.

Some of the major differences:

• elisp has traditionally used dynamic scoping rules; Common Lisp uses lexical scoping rules. With dynamic scoping, a function can access local variables declared in calling functions and has generally fallen out of favor. Emacs has a lexical-let form that simulates lexical scoping and recent versions of emacs allow optional lexical scoping on a function-by-function basis.

• elisp doesn't have closures, which makes composing functions and currying difficult. There's a apply-partially function that works similarly to currying. Note that the lexical-let form introduced in Emacs 24 makes it possible to produce closures via lexical scoping.

• Much of the Common Lisp library that has been built up over time isn't available in elisp. A subset is provided by the elisp cl package

• elisp doesn't do tail-call optimization.

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