For those of us digital archaeologists running back-levels of J, it would be nice to have a robust test for a given version of J or later which tolerates versions down to 4.01, say.
What represents best-practice? The best I can come up with is: jversion=: 3 : 0 ". 'j.' -.~ '/' taketo 9!:14'' ) which reliably returns a 3-digit integer, permitting (say): if. 900 <: jversion'' do. … A candidate for stdlib? ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm