Re: [Bug-apl] IOTA

Hi, I'm playing with this definition and noticed that if the argument was scalar (if the term is correct) and more than 2 then it returns strange result i 1 ┌─┐ │1│ └─┘ i 2 ┌2──┐ │1 2│ └───┘ i 3 ┌2──┐ │┌2──┐ ┌2──┐│ ││1 2│ │1 3││ │└───┘ └───┘│ └∊──┘ i 4

Re: [Bug-apl] An other question about "⍶"

Thanks for bringing this up and for the solution. It is even more readable: at ← { ⍵+(⍴⍵)↑(-χ)↑⍺ } 88 at[3 2] s44 Best, Ala'a On Thu, May 19, 2016 at 6:04 PM, Juergen Sauermann wrote: > Hi Christian, > > correct. In GNU APL you cannot use values in defined

Re: [Bug-apl] Outer product with replicate error

Isn't it the same as using reshape instead? 3 0 2 ∘.⍴ 5 1 7 5 5 5 1 1 1 7 7 7 5 51 17 7 Best, Ala'a On Sat, May 14, 2016 at 10:31 PM, Xiao-Yong Jin wrote: > >> On May 14, 2016, at 7:51 AM, David Tran wrote: >> >> Hi, >> >>

Re: [Bug-apl] user defined functions using Unicode math chars

t; Hi Ala, > > the allowed characters in variable names are defined in the ISO standard and > √ is none of them. Unicode characters can be used inside strings, like in > > VAR ← '√' > > but not otherwise. > > /// Jürgen > > > > On 05/14/2016 12:27 PM, Ala'a Moham

[Bug-apl] user defined functions using Unicode math chars

Hi, I'm trying to define user functions using some unicode characters, but gnu-apl complains about the characters used not being from the defined acceptable set: √ ← {⍵ ⋆ ÷2} Unknown APL character: √ (U+221A) Non-APL character ∛ ← {⍵ ⋆ ÷3} Unknown APL character: ∛ (U+221B) Non-APL

Re: [Bug-apl] Supporting negative ranks for ⍤ operator

TryAPL is powered by Dyalog APL and shows the same results as GNU APL on the neg one case, as below: http://tryapl.org/#?a=%28+/%u2364%AF1%293%204%u2374%u2373100 Ala'a

Re: [Bug-apl] Spell corrector - APL

5 conan 4 apl -s -f fhist.apl 8901.96s user 5.78s system 99% cpu 2:28:38.61 total On Sat, Sep 10, 2016 at 12:02 PM, Ala'a Mohammad <amal...@gmail.com> wrote: > Thanks to all for the input, > > Replacing Find and Each OR with Match helped, now I'm parsing a 159K >

Re: [Bug-apl] Spell corrector - APL

desc 39 2⍴(⍪u),≢¨⊂⍨x[⍋x←u⍳w] > > Jay. > > On 12 September 2016 at 18:34, Ala'a Mohammad <amal...@gmail.com> wrote: >> >> Thanks for the alternative, I'd tried to run it, but got Rank Error >> >> RANK ERROR >> λ1[1] λ←⍵[⍒⍵[;2];] >> ^

Re: [Bug-apl] Spell corrector - APL

g the last line with this? It runs in about 1 minute on my > machine: > > desc 39 2⍴(⍪u),≢¨⊂⍨x[⍋x←u⍳w] > > Jay. > > On 11 September 2016 at 19:23, Ala'a Mohammad <amal...@gmail.com> wrote: >> >> Just an update as a reference, I'm now able to parse the big.txt file >>

Re: [Bug-apl] Spell corrector - APL

ntry 417 > world355 > project 286 > gutenberg262 > laws 233 > sir 176 > series 128 > sure 123 > sherlock 101 > ebook 85 > copyright 69 >

[Bug-apl] Spell corrector - APL

Hi, I'm trying to create simple spell corrector (Norvig at http://norvig.com/spell-correct.html) in APL. I tried but stumbled upon the frequency/count stage and could not move further. The stopper was either WS Full, or apl process killed. I'm assuming the main issue is 'lack of experience with

Re: [Bug-apl] Unique far too slow

Thanks to all! Now unique went from 2 min and 36 sec down to 10 sec, in the spellcheck script. Ala'a On Sat, Sep 17, 2016 at 4:43 PM, Juergen Sauermann wrote: > Hi Xtian, > > thanks, fixed in SVN 796. > > /// Jürgen > > > On 09/17/2016 05:12 AM, Christian Robert

[Bug-apl] Short circuiting expressions like OR and AND

Hi, Some languages support short circuiting evaluation for example in Python known([word]) or known(edits1(word)) or known(edits2(word)) or [word] Returns the first part ( 'or' is the delimiter) that return a True (not False of which is the empty {}, others are None 0 "" () []) Do I need to

Re: [Bug-apl] dynamic function not referencing global?

Hi, I previously had similar cases, but could not understand them. since they are worknig for functions, but not lambdas, and assumed that is the case. Now, after reading "This is normal APL and holds for all niladic functions and not only for niladic lambdas.", I'm more confused. if I'm not

Re: [Bug-apl] Assertion failed in 'equal'

On Tue, Oct 18, 2016 at 3:42 PM, Jay Foad wrote: > ⍋⍋'GNUAPL' Great! Thanks.

[Bug-apl] partial enclose stack trace SF

Hi, Playing with partial enclose (formally enclose with axis) as follows gave me the following segfault A←2 3 4⍴⍳24 A 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 ⊂[3 2 2]A SEGMENTATION FAULT

Re: [Bug-apl] dynamic function not referencing global?

On Wed, Oct 26, 2016 at 6:55 PM, Juergen Sauermann wrote: > ⎕FX 'Z→time' 'Z←⎕TS' Hi Jurgen, I assume you meant: ⎕FX 'Z←time' 'Z←⎕TS' not ⎕FX 'Z→time' 'Z←⎕TS' which gives value error Regards, Ala'a

[Bug-apl] Assertion failed in 'equal'

I was trying to assign order to a word letters for example 'zach' is 312, I got it finally, for example for 'maine' abc←'abcdefghijklmnopqrstuvwxyz' 1+(⌽⍳5)[(⍋abc⍳'maine')] 4 1 3 5 2 But I got the following failing assertion and wanted to check if something related to my code or the

Re: [Bug-apl] Assertion failed in 'equal'

X > > you might consider using something like > > 0 ⌈ 26 ⌊ ¯97 + ⎕UCS XXX > > which will decrease your execution time from O((⍴A)×(⍴B)) down to O(⍴B). > > /// Jürgen > > > > On 10/16/2016 04:51 PM, Ala'a Mohammad wrote: > > I was trying to assign order

[Bug-apl] rational experimental feature: 'float' issue

Hi, I was playing with the sum of the series 1/3, 1/9, 1/27 ..etc (1÷3⋆⍳x), and found that If I'm using the rationals experimental feature (⎕ps ← 1 0), then it the following were found: 1) 1÷3⋆⍳5 1÷3 1÷9 1÷27 1÷81 1÷243 +/1÷3⋆⍳39 2026277576509488133÷4052555153018976267

Re: [Bug-apl] rational experimental feature: 'float' issue

0.67 3×1÷3 1 5×1÷3 1.7 6×1÷3 2 1×1÷2 0.5 2×1÷2 1 Regards, Ala'a On Mon, Aug 14, 2017 at 11:12 PM, Ala'a Mohammad <amal...@gmail.com> wrote: > Hi, > > I was playing with the sum of the series 1/3, 1/9, 1/27 ..etc > (1÷3⋆⍳x), and found

Re: [Bug-apl] Rational Numbers

Hi Jürgen, I was playing with experimental support for rational numbers and found that result was converted to float while using dyadic maximum, minimum, even though I did not use the monadic + (1÷3) ⌈ (3÷4) 0.75 (1÷3) ⌊ (3÷4) 0.33 Is this the intended display? Also by

Re: [Bug-apl] Rational Numbers

Hi Jürgen, Thanks go to you for the prompt response. I do really appreciate it. Regards, Ala'a On Sat, Aug 12, 2017 at 12:26 AM, Juergen Sauermann <juergen.sauerm...@t-online.de> wrote: > Hi Ala'a, > > thanks, fixed in SVN 993. > > /// Jürgen > > > On 08/11/2017

Re: [Bug-apl] Help with APL expression

Hi, Another two ways, Not as compact or optimized, but generate the same output 1) G groups, C categories, and S strings G←(⍴∪C)⍴⊂⍬ ◊ C {G[⍺]←⊂(⊃G[⍺]),⊂⍵}¨S ◊ G I forgot how to suppress the middle output or in a function ∇ groups ← categories group items groups ← (⍴∪categories)⍴⊂⍬

Re: [Bug-apl] Help with APL expression

Oops, the second solution should be (1+c[x]) ⊂ s[x←⍋c] Ala'a On Fri, Jul 7, 2017 at 1:38 AM, Ala'a Mohammad <amal...@gmail.com> wrote: > Hi, > Another two ways, Not as compact or optimized, but generate the same output > 1) > G groups, C categories, and S strings > > G

[Bug-apl] E in number printing style (scientific notation)

Hi, Is it possible to control when the interpreter uses the 'E' or display the number without it? I know of quad print precision, but it did not affect the printing of notation used for displaying these numbers when I played with it. I'm asking this because on one side I understand that this

[Bug-apl] Assertion failed

Hi, I'm trying to edit a function but got the following trace == Assertion failed: items in Function: at in file: ../Simple_string.hh:276 Call stack: -- Stack

Re: [Bug-apl] Assertion failed

for Elias to look into. Seems like some >> Simple_string is corrupted. >> >> /// Jürgen >> >> >> On 07/30/2017 09:40 PM, Ala'a Mohammad wrote: >> >> Hi, >> >> I'm trying to edit a function but got the following trace >> >> >

[Bug-apl] Positive sum displayed as neg fraction

Hi, An example where the display is showing 'neg' when the number is positive. ⎕ps ← 1 0 +/2÷⍳1 ¯227306580757051271÷18407405366253039616 ⍎⍕+/2÷⍳1 ¯0.01234864861 ⍝ or ¯227306580757051271÷18407405366253039616 ¯0.01234864861 ++/2÷⍳1 5.778191391

Re: [Bug-apl] Assertion failed

Hi, I do not know if this is the same cause, but the assertion seems to be the same in a new session do the following - write an incorrect name like 'x.y' - edit a function like 'z' - save the function - edit the z function again, and you get the failed assertion I'm running the latest APL

Re: [Bug-apl] Assertion failed

do_Assert(char const*, char const*, char const*, int) SI stack: == terminate called after throwing an instance of 'ErrorCode' Process apl aborted On Mon, Aug 28, 2017 at 10:10

Re: exercise 2019/03

Using a separate function for rounding (from Dyalog book with re formatting), thus usable in other contexts. ∇R← N round V;S ⍝ N: number of decimals ⍝ V: value to be rounded S←10⋆N ⍝ Scale R←(⌊.5+V×S)÷S ⍝ Result ∇R←gdist M; G;F;S;P ⍝ R: Result ⍝ M: numerical grades G ← 'ABCDF' ⍝ G:

Re: Linear Algebra assistance

Hi, This may be related: https://www.dyalog.com/blog/2015/01/cholesky-decomposition/ HiH. Regards, Ala'a On Wed, Apr 29, 2020 at 12:24 AM Rowan Cannaday wrote: > Is anybody familiar with the QR algorithm, or the notation used in Golub & > Van Loan's book "Matrix Computations"? > > I am

Re: Linear Algebra assistance

plicitly > performed, some authors, for instance Watkins,[8] > <https://en.m.wikipedia.org/wiki/QR_algorithm#cite_note-8> suggested > changing its name to *Francis algorithm"* > > *https://en.wikipedia.org/wiki/QR_algorithm > <https://en.wikipedia.org/wiki/QR_algorith

Re: sparse vector 'without' returns ⍬ with sufficiently large vector

Hi, Sorry, I did not dive very deep, but it seems that the Tilde ~ with zero (0) is the point where it choke. If other values substituted, then it generate output. this works 0~⍨?⍳3600 but for example this does not work 0~⍨?⍳3601 HiH regards, On Thu, Apr 30, 2020 at 10:41 PM Dr. Jürgen

Re: sparse vector 'without' returns ⍬ with sufficiently large vector

Hi, I suspect It has something to do with Zero value. Kacper example also produce output when Zero is replaced with other values. HiH Regards, On Thu, Apr 30, 2020 at 11:12 PM Kacper Gutowski wrote: > On Thu, Apr 30, 2020 at 08:14:46PM +0200, Dr. Jürgen Sauermann wrote: > >Could you please

Re: exercise 2019/02

Hi, or in other way, not elegant but I assume from the light testing it is working ∇r←grade marks code←'FDCCBBAA' r← code[⌊(4+marks)÷5] grade 10 10⍴⍳100 FF FF FF FF FF FF FD CC BB AA HiH Regards,

Re: Absolute limits of rank 2 bool matrix size in GNU APL?

Hi there! You may find something helpful/useful in a previous discussion about the similar program https://lists.gnu.org/archive/html/bug-apl/2016-09/msg00026.html Hope it helps. Regards, Ala'a On Tue, Dec 28, 2021 at 11:09 PM Blake McBride wrote: > Hi Jürgen, > > First, to be sure you know

Re: Unexpectedly offline

Wish you full recovery Jürgen! On Sun, Jan 22, 2023 at 5:07 PM Dr. Jürgen Sauermann < mail@jürgen-sauermann.de> wrote: > Gentlemen, > > I am sorry for not responding earlier to any emails to bug-apl@gnu.org. > > I was unexpectedly taken offline after new year and I am > now online again,

Re: Getting started with APL

Hi Garjola, The people had already mentioned the books and gave suggestions which are very useful. I'd like to mention the following tripping points (which I fall for), to keep in mind which minimize confusion: - Gnu APL is in implementation of ISO/IEC 13751:2001 (and is neither APL\360 nor