2 Commits

Author	SHA1	Message	Date
AlexKnauth	af2c22f542	Add error message specifications	2015-08-14 21:42:21 -05:00
AlexKnauth	a58c2e317f	add define-new-subtype ... inspired by haskell newtypes http://www.mail-archive.com/racket-users@googlegroups.com/msg27118.html https://www.haskell.org/tutorial/moretypes.html	2015-07-30 01:39:06 -04:00