Knowing that J/APL developers and users are thorough I should have looked more carefully! Thank you, Martin.
On Sat, Dec 23, 2017 at 9:27 AM, Martin Kreuzer <[email protected]> wrote: > ... and the Dictionary in the Notes section of ($.) says: > "Sparse literal and boxed arrays not yet implemented. " > -M > > At 2017-12-23 13:35, you wrote: > > Hi all, >> Why can't I box sparse arrays? I was exploring sparse arrays after it >> came >> up on the mailing list and was surprised to get a nonce error when I tried >> to box a sparse error. Using the example given on the dictionary entry >> for >> $. to demonstrate the issue: >> >> ] d=: (?. 3 4$2) * ?. 3 4$100 >> 0 56 0 6 >> 85 0 0 96 >> 0 0 33 0 >> ] s=: $. d >> 0 1 │ 56 >> 0 3 │ 6 >> 1 0 │ 85 >> 1 3 │ 96 >> 2 2 │ 33 >> s ; d >> |nonce error >> | s ;d >> <s >> |nonce error >> | <s >> <d >> ┌───────────┠│ 0 56 0 6│ >> │85 0 0 96│ >> │ 0 0 33 0│ >> └───────────┘ >> >> I could not find any mention of this nonce error in the dictionary. >> Please >> let me know if I have overlooked something obvious. And I am curious how >> Roger Stokes managed to box sparse arrays in his LJ book. >> >> Thanks, >> Vijay. >> ---------------------------------------------------------------------- >> For information about J forums see http://www.jsoftware.com/forums.htm >> > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > -- Vijay Lulla, Ph.D. Assistant Professor, Dept. of Geography, IUPUI 425 University Blvd, CA-207C. Indianapolis, IN-46202 [email protected] <http://vijaylulla.com> http://vijaylulla.com ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
