K7 Tutorial

Post by justinsaccount » Mon, Apr 15, 2019, 8:04 PM UTC

    x: 3 4 5 6 7 8 9 10
    y: 100 200 300 400

    ?[x;3;y] / replace what's in position 3 by y
  3 4 5 100 200 300 400 6 7 8 9 10

Post by justinsaccount » Mon, Apr 15, 2019, 8:10 PM UTC

tmcb wrote: post #22

justinsaccount wrote: post #21

This a typo? x: 3 4 5 6 7 8 9 10 y: 100 200 300 400 ?[x;3;y] / replace what's in position 3 by y 3 4 5 100 200 300 400 6 7 8 9 10

Looks like the comment is zero-indexed as well. I wouldn't consider that a typo.

  3 4 5 100 200 300 400 7 8 9 10

  ?[x;3;y] / insert y at position 3
  ?[x;3 4;y] / replace what's in position 3 by y

Post by justinsaccount » Mon, Apr 15, 2019, 8:15 PM UTC

tmcb wrote: post #24

justinsaccount wrote: post #23

Earlier quoted context omitted.

Pretty sure the output should be 3 4 5 100 200 300 400 7 8 9 10 Otherwise that is not replacing, that is inserting. Weird, I tried it on http://johnearnest.github.io/ok/index.html and that agrees with the doc.. kinda confusing. Seems like it should be ?[x;3;y] / insert y at position 3 ?[x;3 4;y] / replace what's in position 3 by y

I see. In that case, the output is right and the comment is misleading.

Post by tluyben2 » Mon, Apr 15, 2019, 8:38 PM UTC

avmich wrote: post #19

lolc wrote: post #3

"Customer shall not, directly or indirectly, and shall not authorize any third party to: (i) decompile, disassemble, reverse engineer, or otherwise attempt to derive the source code of, reconstruct, or discover any hidden or underlying elements of the Software" Looks like I don't want to spend the effort learning it.

Just in case you want to look at the sources of something similar, here is a good one: https://github.com/JohnEarnest/ok

Post by yiyus » Mon, Apr 15, 2019, 8:48 PM UTC

max_ wrote: post #26

Does anyone understand if this is fully compatible with Kdb+? been learning q & it would be nice to add vanilla K7 to the list