Re:I got the J language working on OpenBSD
by maximus-decimus on Sunday September 12, 2021 @07:03PM
(#28505897)
J is also way harder to learn in my opinion due to it having many times more operators. K2 and Q also have official books.
There's also a wealth of documentation and books on J: J for C Programmers: https://www.jsoftware.com/help/jforc/contents.htm
Learning J: https://www.jsoftware.com/help/learning/contents.htm
And the New Vocabulary "Nuvoc" on the wiki: https://code.jsoftware.com/wiki/NuVoc
Edit: spelling.