I've got a copy that I bought new while in grad school (back in the '70s). I read and reread it; it's a lot of fun. Unfortunately, I kept in in my grad student

I've got a copy that I bought new while in grad school (back in the '70s). I read and reread it; it's a lot of fun. Unfortunately, I kept in in my grad student office in the CS building, so to protect it and my other CS books from wandering off I stamped my name with bright ink on a number of the pages. The name stamps probably ruined its value as a collector's item :( ... One thing I remember from it was his fascination with APL and with the even more off-beat language TRAC. TRAC is a Turing complete macro language first implemented as an interactive programming environment[1]. [1] http://hopl.info/showlanguage2.prx?exp=276 http://hopl.info/showlanguage2.prx?exp=276