SICP 2.36 2.37 2.38 2.39

为什么80%的码农都做不了架构师？>>>   

2.36

(map car seqs)
(map cdr seqs)

2.37

(lambda (x) (dot-product x v))
cons
'()
(lambda (x) (map (lambda (y) (dot-product x y)) cols))

2.38

3/2
1/6
(1 (2 (3 '())))
((('() 1) 2) 3)
(op a b) == (op b a)

2.39

(append y (list x)
(cons y x)

 

转载于:https://my.oschina.net/guzhou/blog/732523