I use an expression like this to update a column: (97 98 99) 2}&.|: i. 3 3
Sent from my Verizon, Samsung Galaxy smartphone -------- Original message --------From: Henry Rich <henryhr...@gmail.com> Date: 12/23/17 15:53 (GMT-05:00) To: programm...@jsoftware.com Subject: Re: [Jprogramming] Clearing a screen in jqt and the best way to replace a column Your solution is good. There is special code for most of it. See warnings at http://code.jsoftware.com/wiki/Vocabulary/SpecialCombinations#Whole-Array_Operations Another possibility is (($,)~ _2 */\ $) 0 2 1 3 |: > array Henry Rich On 12/23/2017 2:29 PM, Jimmy Gauvin wrote: > I was exploring the kind of problem lately and ended up with: > > (,.97 98 99) (,2)}"1 i. 3 3 > > Left rank never occurred to me. > > While we're playing with structures, is there a better way to unbox boxes > of arrays than the following: > > (2 2$2)<;._3 i.6 6 > ┌─────┬─────┬─────┐ > │0 1 │2 3 │ 4 5│ > │6 7 │8 9 │10 11│ > ├─────┼─────┼─────┤ > │12 13│14 15│16 17│ > │18 19│20 21│22 23│ > ├─────┼─────┼─────┤ > │24 25│26 27│28 29│ > │30 31│32 33│34 35│ > └─────┴─────┴─────┘ > > ,.&.>/ ,&.>/ (2 2$2)<;._3 i.6 6 > 0 1 2 3 4 5 > 6 7 8 9 10 11 > 12 13 14 15 16 17 > 18 19 20 21 22 23 > 24 25 26 27 28 29 > 30 31 32 33 34 35 > > maybe a tesselation inverse? > > > > On Sat, Dec 23, 2017 at 12:52 PM, Henry Rich <henryhr...@gmail.com> wrote: > >> To modify acolumn: >> >> 97 98 99 (2})"0 1 i. 3 3 >> >> 0 1 97 >> >> 3 4 98 >> >> 6 7 99 >> >> >> Henry Ric >> h >> > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm --- This email has been checked for viruses by AVG. http://www.avg.com ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
