"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."
目录
((Contents)
(Foreword ix)
(Preface xi)
((l.Toys) 2)
((2. Do It, Do It Again, and Again, and Again ...) 14)