
Oh, interesting. I wrote (and/c exact-integer? (between/c 1 2))
and the contract “expected” message said the simpler (integer-in 1 2)
. I wonder if the contract itself was optimized like that or just the message. I’m guessing the former.

Looks awesome

What do I do to use it?

Today I downloaded the Racket 6.11 package for Mac. When I double-click on DrRacket, it does not start. I see the following in the system logs: Nov 4 14:22:11 gris com.apple.xpc.launchd[1] (com.apple.xpc.launchd.oneshot.0x10000007.DrRacket[1053]): Service exited with abnormal code: 1
Nov 4 14:22:27 gris com.apple.xpc.launchd[1] (org.racket-lang.DrRacket.16768[1060]): Service exited with abnormal code: 1
Have others seen this? FWIW, earlier today I installed the latest macOS security update.

If I run racket
from the command line, that (seems to) work fine.

@eeide what about racket -l drracket
on the command line?