Re: [Jprogramming] Adding constants to intervals

2019-11-21 Thread 'Jim Russell' via Programming
Ahah! Thanks! > On Nov 21, 2019, at 3:34 PM, Henry Rich wrote: > > > on unboxed is like ]"0, but when you use &.> then you have the inverse of > > which is <, not like ]"0 at all. In your test you should have written (]"0) > instead of ]"0 . > > I meant dyadic ];.0 as in > >(,.1 4) ];.0

Re: [Jprogramming] Adding constants to intervals

2019-11-21 Thread Henry Rich
> on unboxed is like ]"0, but when you use &.> then you have the inverse of > which is <, not like ]"0 at all. In your test you should have written (]"0) instead of ]"0 . I meant dyadic ];.0 as in    (,.1 4) ];.0 'abcdefgh' bcde as an alternative to (1+i. 4) { 'abcdefgh' Henry Rich On 11/21

Re: [Jprogramming] Adding constants to intervals

2019-11-21 Thread 'Jim Russell' via Programming
Nice. But trying to understand, (thanks to dissect): dissect '10 20 30 (+ i.)&.> 3 2 4' cannot be replaced by dissect '10 20 30 (+ i.)&. ]"0 (3 2 4)' . And (again thanks to dissect) , did everyone else understand what dissect '];.0(3 2 4)' did? (I still have no clue what that has to do

Re: [Jprogramming] J and data structures

2019-11-21 Thread Raul Miller
On Thu, Nov 21, 2019 at 7:44 AM 'Rob Hodgkinson' via Programming wrote: > Raul, I fear you have strayed off path again so as you inferred, I provide a > very brief background to this. I did not know, and I felt I had to convey the ideas you were suggesting to me, to find out what you were talkin

Re: [Jprogramming] Explicit vs tacit with assignment

2019-11-21 Thread Jose Mario Quintana
"By all means break the rules, and break them beautifully, deliberately and well." Bringhurst, Robert (2005). The Elements of Typographic Style PS. I try to keep that in mind when writing (particularly in J). On Thu, Nov 21, 2019 at 4:26 AM R.E. Boss wrote: > AMEN. > > When you try to uphold

Re: [Jprogramming] J and data structures

2019-11-21 Thread Jimmy Gauvin
@Rob Have you considered using FPGA boards to boost your throughput ? On Thu, Nov 21, 2019 at 8:44 AM Vijay Lulla wrote: > Rob, > Can you please send me the paper too? I would like to read it. > Thanks in advance, > Vijay. > > > --

Re: [Jprogramming] J and data structures

2019-11-21 Thread Vijay Lulla
Rob, Can you please send me the paper too? I would like to read it. Thanks in advance, Vijay. On Tue, Nov 19, 2019 at 8:02 PM 'Rob Hodgkinson' via Programming < programm...@jsoftware.com> wrote: > Devon, my previous reply also brought to mind a very good example you > request below … > > In kdb+

Re: [Jprogramming] J and data structures

2019-11-21 Thread 'Rob Hodgkinson' via Programming
Raul, I fear you have strayed off path again so as you inferred, I provide a very brief background to this. I am speaking from direct experience as I have specialised in the matching engine space since 1992 when I co-wrote the first commercial in memory matching engine (called X-Stream). This i

Re: [Jprogramming] Explicit vs tacit with assignment

2019-11-21 Thread R.E. Boss
AMEN. When you try to uphold the rules of a language (which is done only by older people), you are fighting a lost battle. R.E. Boss > -Oorspronkelijk bericht- > Van: Programming > Namens Henry Rich > Verzonden: donderdag 21 november 2019 04:02 > Aan: programm...@jsoftware.com > Ond