Many years ago, hmmm, I think it around 1979, I wrote a basic program that
could deal bridge hands with constraints. The idea was that you were
looking at a known hand, so let's say your partner opens 1 spade and you
are bidding 5 card majors. I would take the cards you were looking at,
take them
Haha. I think / was reduce in APL.
On Wed, Sep 5, 2018, 14:52 'Pascal Jasmin' via Programming <
programm...@jsoftware.com> wrote:
> the wikipage mislabels the / operator as map as well (it is in fact a
> reduce operator)
>
> The functional map function replaces a "for each" loop. Rank is very
Your example used i rather than i. when you created the verb. If this is a
cut and paste, that would be significant.
On Sat, Jul 7, 2018, 14:08 Skip Cave wrote:
> I have a tacit verb that finds the sum of the factorials of the odd
> integers from 1 to 2n - 1:
>
> +/!>:2*i.1
>
> 1
>
> +/!>:2*i.2
ssh can be run without pty allocation, the remote command can just be run
under pipes, for openssh, the option is -T if I read the manual pages
correctly. The real question is whether the program you want to run
remotely needs a pty (Or the signal processing changes you can get from the
pry). Cert
I have attempted to install the beta on an android phone that had never
before had J installed on it. Then I tried using it and was stymied. I
can't load or save anything. For example, I have an ijs file I want to use
from downloads. Soon as I do the load and then hit ".." To walk the tree J
fail
> 5 8 2 13 7
> 0 8 11 10 1
> 7 14 11 12 13
> 9 8 10 14 1
> 6 5 3 1 10
>
>NB. the sum (1 15 p. i.5) + the matrix
>NB. maps items to items, which are
>NB. scalars + rows
>NB. which is again mapped item to item
>NB. because + has rank 0
t; Raul
>
>
> On Wed, Feb 28, 2018 at 6:37 AM, bill lam wrote:
> > I suspect ="2 and *."2 are the same as that without rank conjunction
> > because = and *. are rank 0
> >
> > On Feb 28, 2018 2:18 PM, "Nick S" wrote:
> >
> > Someone plea
Maybe the steel straight edge was some hundreds of meters long? An
interesting point about this is that back when I worked in a machine shop
for a summer we would commonly set keyway cuts by eye and one of the master
machinists proved to me that it was possible to do so within 0.001" on 1"
cold ro
Someone please tell me if I understand this:
If I have a list of 5x5 tables, that is, a thing with a shape of n 5 5
where n is anything from 1 to 30, That is, the shape of the table might be
(5 5 or 2 5 5 or 3 5 5 etc.) and I want to compare it against a single 5x5
thing in 5x5 groups, the proper
Never mind, I see my mistake. I was assembling my square array one way and
using it another. Sorry to bother everyone.
On Thu, Feb 22, 2018 at 6:24 AM, Nick S wrote:
> I am trying to print a bingo card. The expression I am using is simple.
> My result is unexpected:
>
>
&
I am trying to print a bingo card. The expression I am using is simple.
My result is unexpected:
|:((<' B '),(<' I '),(< ' N '),(<' G '),(<' O ')),. 3&": L:0 <"0(1 16 31
46 61)+(5?15),.(5?15),.(5?15),.(5?15),.(5?15)
┌───┬───┬───┬───┬───┐
│ B │ I │ N │ G │ O │
├───┼───┼───┼───┼───┤
│ 2│ 16│ 4
3{.5*20+i.199-19
100 105 110
_3{.5*20+i.199-19
985 990 995
+/5*20+i.199-19
98550
<.999%5
199
Is where you get 199 from, and 20*5 is 100, so that is how you get the
range. It is simpler to just multiply the shortened range by 5 and sum it
than to filter it.
If you are trying to impress people wi
Hmm, is it better, in general to code that as
*./ reply = 'yes'
or
*/ reply = yes
or
reply -: 'yes'
or maybe
(<,tolower reply) e. (,'y');'ye';'yes'
I know, my actual question is,
When I work with booleans I always try to use and and and or to maintain
boolean results.
I have noticed in o
I see that the regular expression support is achieved by calling an
external library.
I have used J a lot on my Android phone and just installed J on an Amazon
Fire, which basically runs Android with a payment system that is slightly
different, but since J has no in-app purchases it does not matte
x27;)
> adbecfagbhciajbkclambncoapbqcrasbtcu
>
> Did you try two ranks?
>
> Henry Rich
>
>
>
> On 1/8/2018 11:26 AM, Nick S wrote:
>
>> I want to shuffle arrays, such that I pair them, a member of 1 with a
>> member of the next, as:
>>
>> &#
I want to shuffle arrays, such that I pair them, a member of 1 with a
member of the next, as:
'abc' ,"_1 'def'
ad
be
cf
,'abc' ,"_1 'def'
adbecf
But what I want to do is to:
so the same sort of pairing with this as a right argument:
6 3 $ 'defghijklmnopqrstu'
Now, honestly, I had
Great suggestion. I actually played with it for quite a while last night,
got it all working. The solver can solve any puzzle I throw at it,
including those that barely have enough definition to hold together. I can
imagine puzzles it can't solve but those would have to be constructed to be
unso
With jqt, I might try to dissect the prompt program to see exactly what it
is doing and if it is applicable. With emacs, well, the code for the mode
is probably written in lisp, so you can hack on that just like anything
else to get it to do what you want. If not, there is source somewhere.
On T
ou want to use a stop-on-error script or adverse to
> regain control -- http://www.jsoftware.com/help/dictionary/dx000.htm
> or http://www.jsoftware.com/help/dictionary/d312.htm
>
> Ultimately... what you're talking about is a bit ugly and whatever you
> choose is going to have some
Well, exit'' takes J down completely.
I have read through most of the foreigns again, and through doc, and I
searched the messages from this forum for a bit. Either I can't find the
right search string or it has not been discussed since I have begun
following this. I just can't find an answer.
ject: Re: [Jprogramming] Error with select? Maybe someone can
> >> explain this to me.
> >>
> >> 'e' e. ,'e'
> >> 1
> >> The character was found in the list.
> >>
> >> (<'e') e. <,'e'
> &g
I worried about that, but the read is completing. I think that "within a
script" would mean that if I had immediate code in an ijs file I can't
pause the load to read from the keyboard.
I understand the point, and the fix worked. But I thought I had tested for
rank mismatch when I did this:
(
The very first thing I wrote in the post that started this thread was:
I have a 3d array that is the formatted output of a table. I capture
> snapshots of it at different points in my processing, in a rank 3 array. I
> want to flip between pages to see how the processing progresses. I thought
> I
I am using jqt on windows. Specifically:
9!:12 ''
6
9!:14''
j806/j64avx/windows/beta-3/commercial/www.jsoftware.com/2017-04-10T18:03:23
I stop and start the jqt program. Then I select my project but I do not
load any of the programs into the workspace. I highlight and select the
seltest
"it" is nor what "working" would look like...
>
> We can guess, and sometimes maybe get it right, but we can also guess
> and get it wrong.
>
> Thanks,
>
> --
> Raul
>
>
> On Sun, Dec 24, 2017 at 4:09 AM, Nick S wrote:
> > OK, so basically
Using two transpositions was my first thought. I came to J from years of
dabbling with APL (first use was inn 1970ish on the 360/65 at the UofF
where they ran APL for two hours at lunch..instead of their homegrown
timesharing system, nd then on an 8K IBM 1130.
So, in a way I miss the APL syntax.
fewer operators. Maybe what I am doing is optimum.
On Sat, Dec 23, 2017 at 12:52 PM, Henry Rich wrote:
> To modify acolumn:
>
> 97 98 99 (2})"0 1 i. 3 3
>
> 0 1 97
>
> 3 4 98
>
> 6 7 99
>
>
> Henry Rich
>
>
>
>
> On 12/23/2017 12:48 PM, Nick S w
I have a 3d array that is the formatted output of a table. I capture
snapshots of it at different points in my processing, in a rank 3 array. I
want to flip between pages to see how the processing progresses. I thought
I would clear the screen, then display the output, that being one of the
stacke
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