[racket] structural program comparison tool in Racket

Yin Wang wrote at 09/14/2012 10:48 PM:
> "We are not afraid that students would try to tune their work to the
> similarity tester. We reckon if they can do that they can also do the
> exercise."
>    

Threat: industrious student makes program that accepts input of one 
correct program and yields N equivalent programs, with random benign 
mutations and formatting tweaks; sells equivalent programs to N lazy 
students. :)


Neil V.