The Little Schemer

Name: The Little Schemer
Availability: InStock
Rating: 9.2 (159 reviews)
ISBN: 9787121317255

出版社

出版时间

2017-07-01

ISBN

9787121317255

评分

★★★★★

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书籍介绍

这不是一本教你写程序的书，而是一场精心设计的对话——作者用一问一答的方式，牵着读者的手，把递归这一计算的核心机制一点点逼出来。它真正的价值不在于让你学会 Scheme，而在于重塑你对

作者简介

Daniel P. Friedman，是美国印第安那大学计算机科学系的教授。Matthias Felleisen是美国莱斯大学计算机科学系的教授。同时，他们使用Scheme来教授计算及编程课程的经验超过了25年，发表了100多篇论文，出版了3部Scheme相关书籍。

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精彩摘录

"... (and ...) 和 (or ...) 都不能被定义成像 (cond ...) 那样的功能, 尽管(and ...) 和 (or ...) 可以通过 (cond ...)表达式的方式表示出来:"
"Scheme(或 Lisp) 中的 pair, 其两个元素是含义不同但相关的对象."
"从现在开始, 我们将使用等宽字体来表述一个原子."
"The Five Rules The Law of Car: the primitive car is defined only for non-empty lists The Law of Cdr: the primitive cdr is defined only for non-empty lists.The cdr of any non-empty list is always another list. The Law of Cons: The primitive cons takes two arguments. The second argument to cons must b"
"The First Commandment: Always ask null? as the first question in expressing any function. The Second Commandment: Use cons to build lists. The Third Commandment: When building a list, describe the first typical element,and then cons is onto the natural recursion. The Fourth Commandment: Always chang"
"First: When recurring on a list of atomes, lat, ask two questions about it: (null? lat) and else. When recurring on a number, n, ask two questions about it: (zero? n) and else. Second: When building a value with +,always use 0 fro the value of the terminating line, for adding 0 does not change the v"
"When recurring on a list of S-expressions, l, ask three question about it: (null? l), (atom? (car l)), and else. Simplify only after the function correct."
"The First Commandment (preliminery) Always ask null? as the first question in expressing any function."