Re: [Jprogramming] does mema handover to the gc mechanism, looping...

Jobs - bad assumption. Having said that, I don't want to discourage entrepreneurs, looking forward to your startup. Loops and resources. Henry is modest and I haven't seen any remarks indicating you have absorbed Henry's book - J for C Programmers https://www.jsoftware.com/help/jforc/content

Re: [Jprogramming] does mema handover to the gc mechanism, looping...

Maybe this is the time for me to pick up my work on the four main composition conjunctions. Actually, I don’t remember why we didn’t go on from where we got in May. @Henry, Ian, Art: Do you remember why we didn’t go on here? Is anything missing? I don’t remember there was anything we couldn’t agre

Re: [Jprogramming] NYCJUG today in an hour

You could join the "J Dynamic Functional" Meetup. On Tue, Dec 8, 2020 at 4:44 PM 'Rob Hodgkinson' via Programming < programm...@jsoftware.com> wrote: > Sorry to this group, had meant to send to Devon directly. > > > On 9 Dec 2020, at 8:43 am, 'Rob Hodgkinson' via Programming < > programm...@jsoft

Re: [Jprogramming] NYCJUG today in an hour

Sorry to this group, had meant to send to Devon directly. > On 9 Dec 2020, at 8:43 am, 'Rob Hodgkinson' via Programming > wrote: > > Sorry Devon, would have joined, but only just saw this notice/time now… too > late and have work tasks this morning. > > Is there a list that sends out for invi

Re: [Jprogramming] NYCJUG today in an hour

Sorry Devon, would have joined, but only just saw this notice/time now… too late and have work tasks this morning. Is there a list that sends out for invites / calendar ? Or is it always regular (eg 2nd Tue monthly or whatever ?)…/Rob > On 9 Dec 2020, at 7:23 am, Devon McCormick wrote: > >

Re: [Jprogramming] does mema handover to the gc mechanism, looping...

Yes Henry I know about those. I have a reasonable understanding of it but I lack the flying time in general solving real issues with J. I spent 45 minutes last night just absorbing the page on ranks, array, k-cells and framesit makes sense when you read it! I am never going to get a job worki

[Jprogramming] NYCJUG today in an hour

The materials for today's meeting are here: https://code.jsoftware.com/wiki/NYCJUG/2020-12-08 The link to join the meeting may be found here: https://www.meetup.com/J-Dynamic-Functional-Programming/events/rcnjwrybcqblb/ Hope to see some of you there! -- Devon McCormick, CFA Quantitative Consu

Re: [Jprogramming] does mema handover to the gc mechanism, looping...

Do you know about NuVoc and the ancillary pages pointed to below the primitive table?  There is a lot written about rank. Henry Rich On 12/8/2020 2:27 PM, emacstheviking wrote: Hauke, PERFECT! ,.psz &.> pqfname@(res&;)"0 i.ncols ┌───┐ │id │ ├───

Re: [Jprogramming] Writings of Keith Smillie

I just put all the files from the zip up here: http://sigapl.org/ArticlesKeithSmillie.php . Please take a look and let me know what you think. On Tue, Dec 8, 2020 at 1:29 PM Murray Eisenberg wrote: > Where is the zip file with Smillie’s files? > > > On8 Dec 2020 02:18:57 -0500, Devon McCormick

Re: [Jprogramming] does mema handover to the gc mechanism, looping...

Hauke, PERFECT! ,.psz &.> pqfname@(res&;)"0 i.ncols ┌───┐ │id │ ├───┤ │invoice_id │ ├───┤ │created│ ├───┤ │status │ ├───┤ │ce_survey_id │ ├───┤ │

Re: [Jprogramming] Writings of Keith Smillie

Where is the zip file with Smillie’s files? > On8 Dec 2020 02:18:57 -0500, Devon McCormick > wrote: > > These essays [of Keith Smillie] are pertinent today and most of the code > ought to work with an > obvious exception: the Windows-based GUI code circa J 4.01. > >

Re: [Jprogramming] does mema handover to the gc mechanism, looping...

Bingo Hauke, I was waiting patiently and you arrived. :D I will study those in great detail for sure. Thanks for your time, Sean On Tue, 8 Dec 2020 at 17:15, Hauke Rehr wrote: > Did I miss something or didn’t anyone answer the looping question yet? > > Without knowing much about what the names

Re: [Jprogramming] does mema handover to the gc mechanism, looping...

Raul, I'm sure you credit me with far more intelligence than I really have :) Currently I am striving to write a proof-of-concept game in Pure J with call outs to SDL2. However, I am beginning to think that for anything more, it might be better to have a C "app" that then loads up jlib. I want J t

Re: [Jprogramming] does mema handover to the gc mechanism, looping...

Henry, I know where the mines are. I wasn't planning anything so rash, merely posing some idle questions. My code has already used, mema and memf, as well as memr and ic without issue. Sean. On Tue, 8 Dec 2020 at 16:42, Henry Rich wrote: > Don't even think about fooling with J memory blocks.

Re: [Jprogramming] does mema handover to the gc mechanism, looping...

Did I miss something or didn’t anyone answer the looping question yet? Without knowing much about what the names involved are doing, I think it ought to be pqfname@(res&;)"0 i. ncols which will have the shape (shape of i. ncols)×(shape of whatever pqfname res;0 returns) Am 08.12.20 um 14:34 schri

Re: [Jprogramming] does mema handover to the gc mechanism, looping...

That's just the beginning.  You picked a line with a comment: what are all the other lines doing? Valid blocks have many flags and many implied dependencies. Henry Rich On 12/8/2020 11:54 AM, Raul Miller wrote: Stuff like https://github.com/jsoftware/jsource/blob/master/jsrc/cc.c#L366 ? Than

Re: [Jprogramming] does mema handover to the gc mechanism, looping...

Stuff like https://github.com/jsoftware/jsource/blob/master/jsrc/cc.c#L366 ? Thanks, -- Raul On Tue, Dec 8, 2020 at 11:42 AM Henry Rich wrote: > > Don't even think about fooling with J memory blocks. Use mema, memr, > memw, memf, memu. Anything else will crash. > > Henry Rich > > On 12/8/202

Re: [Jprogramming] does mema handover to the gc mechanism, looping...

Don't even think about fooling with J memory blocks.  Use mema, memr, memw, memf, memu.  Anything else will crash. Henry Rich On 12/8/2020 11:37 AM, Raul Miller wrote: I would classify that as possible, but maybe not in the way that you are envisioning. (1) There's a header that J's array mec

Re: [Jprogramming] does mema handover to the gc mechanism, looping...

I would classify that as possible, but maybe not in the way that you are envisioning. (1) There's a header that J's array mechanism would need in front of that string (in older versions of J -- the newer versions support aliasing into arrays, but require a J array to alias -- I haven't studied eno

Re: [Jprogramming] does mema handover to the gc mechanism, looping...

Is it even possible then "introduce" a new managed (ie auto garbage collected reference counted) string variable given some C pointer to a string? On Tue, 8 Dec 2020 at 15:48, bill lam wrote: > mema memf are exactly the same as malloc and free in c. > > memr involves memory copy, no alias. >

Re: [Jprogramming] does mema handover to the gc mechanism, looping...

OK, that at least solved that point. Thanks Bill. On Tue, 8 Dec 2020 at 15:48, bill lam wrote: > mema memf are exactly the same as malloc and free in c. > > memr involves memory copy, no alias. > > On Tue, Dec 8, 2020, 9:34 PM emacstheviking wrote: > > > Apologies for the length of this email

Re: [Jprogramming] does mema handover to the gc mechanism, looping...

mema memf are exactly the same as malloc and free in c. memr involves memory copy, no alias. On Tue, Dec 8, 2020, 9:34 PM emacstheviking wrote: > Apologies for the length of this email but my brain has thrown one again... > > I am currently working on a wrapper for Postgres using libpq-fe. It's

[Jprogramming] does mema handover to the gc mechanism, looping...

Apologies for the length of this email but my brain has thrown one again... I am currently working on a wrapper for Postgres using libpq-fe. It's working but in need of some higher level functions to make result sets easier to work with and feel more J-like. Once the query is executed, all result

Re: [Jprogramming] Seeking advice on structures

Thanks Devon. Most helpful. I am a seasoned C/C++ programmer but a total newbie with J. I've surprised myself thus far by getting a working SDL2 and Postgres (libpq) wrapper up and running but they are more FFI code than idiomatic J. I am having the same sorts of thoughts as I did when I first lea