Racket Man Wanna Learn Datetype and Cases

无意中，想到了 [ racket ][1] ，scheme家族中一员，那么亲切，lovely.

Welcome to Racket v6.9.
> (/ 66 2)
33
> (/ 52.44 0.834493)
62.840551089104395
> (/ 52.44 0.834493)-62
62.840551089104395
-62
> (- (/ 52.44 0.834493) 62)
0.8405510891043946
> (* (- (/ 52.44 0.834493) 62) 360)
302.59839207758205
> exit;
#<procedure:exit>
> (exit)

复习列表:

1. [ datetype ][2]
2. [ cases ][3]
3. [ First Interpreter From EOPL ][4]
4. [ The Second Interpreter from one ][5]
5. [ The third Interpreter with proc feature ][6]
6. [ the fourth Interpreter with traceproc feature ][7]
7. [ The fifth Interpreter with letrec feature ][8] Read the EOPL book

Deadline: 2017-06-30 [1]:http://racket-lang.org/ [2]:http://jueqingsizhe66.github.io/blog/2016/02/19/the-implementation-of-define-datetype/ [3]:http://jueqingsizhe66.github.io/blog/2016/02/23/casesde-zuo-yong/ [4]:http://jueqingsizhe66.github.io/blog/2016/02/25/first-interpreter-from-eopl/ [5]:http://jueqingsizhe66.github.io/blog/2016/02/27/the-second-interpreter-from-one/ [6]:http://jueqingsizhe66.github.io/blog/2016/02/27/the-third-interpreter-implementing-proc/ [7]:http://jueqingsizhe66.github.io/blog/2016/02/27/the-fourth-interpreter-about-the-traceproc/ [8]:http://jueqingsizhe66.github.io/blog/2016/02/28/the-fifth-interpreter-with-the-implementation-of-letrec-important/