Human Folly about “J”

Ioj (jsoftware.com):
An implementation of #J in J itself. #array-languages
on 02025-12-14
Render (github.com):
some math code in #J dealing with quadratics
on 02022-05-26
(jsoftware.com):
Elijah Stone (#moon-child, moon-chilled on GH)’s notes on rank and transpose in #J. #APL
on 02022-05-26
Subroutine performance in J (sam-falvo.github.io):
Subroutine calling in #J version 701b (from 2014) takes about 1400 ns on a 3.4 GHz amd64 box, and 14000 ns on a Galaxy Tab 3, because it’s apparently using string interpretation. #performance
on 02019-02-15