The APL Orchard - 2021-07-03

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RGS

00:14

@user1027871 you should be able to post messages in this chatroom now.

Welcome to the APL Orchard :D

Peilonrayz

00:43

If you have any further problems with user1027871's write permissions feel free to ping me :) I may not be around for a while tho D:

hyper-neutrino

I am here now if anyone needs anything.

7 hours later…

Razetime

07:58

Are there any APL linting tools?

3 hours later…

RGS

10:57

@Razetime dzaima/paste?

Razetime

11:14

that's just a storage/presentations space right

I'm talking about static code checking

RGS

I was mentioning dzaima/paste because I thought you could take a peek at the code there, but I confused linting with syntax highlighting

Razetime

ah

I'd taken a peek already for aplgolf

dzaima

@Razetime there is barely anything for static APL parsing, which is very much required to be able to analyze anything at all

Razetime

hm interesting

so first there needs to be one of that

dzaima

11:35

@Razetime but that's impossible if you're using ⍺⍺/⍵⍵, ⍎, namespaces, or reading globals. (fwiw, Dyalog has a compiler, which does need static parsing, but it doesn't do anything if the things listed (and some others) are used)

Kamila Szewczyk

11:48

@Adám the C comment expression is broken

      '/*'∘(≠\⍷∨¯1⌽∘⌽⍷∘⌽) 'a /* world */ b c'
┌→────────────────────────────────┐
│0 0 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0│
└~────────────────────────────────┘
      '/*'∘(≠\⍷∨¯1⌽∘⌽⍷∘⌽) 'a /* world */'
┌→────────────────────────┐
│1 1 0 0 0 0 0 0 0 0 0 0 0│
└~────────────────────────┘

Razetime

12:33

@dzaima i suppose that can sorta be ignored

how do other languages with an eval function do it, then?

Kamila Szewczyk

12:45

they mark eval as a severe linter error :')

Razetime

13:34

neat

dzaima

13:44

@Razetime depending on the language, eval might not actually completely thrash all ability to statically parse - the type of a variable doesn't usually change its usage

(and, fwiw, i do plan on experimenting with some static analysis for BQN at some point)

Razetime

14:28

@dzaima yes please, I need more places to steal from

2 hours later…

user3821550

16:41

Can the scope of ⎕RL be limited within a Dyalog Class namespace, so reproducible numbers are generated on each call without being effected by use of Roll etc outside of the class?

dzaima

@user3821550 does just adding ⎕RL←1 in the namespace not work?

rak1507

yeah, and then you can access ? from inside the namespace with ns.?

just tested it and it does work

user3821550

I have set ⎕RL to 1 1 within the top function in the class namespace, (which is being being run by MiServer) but on each call from MiServer, I don't get the same results. I will give ns.? a try. Thanks

dzaima

16:56

you have to set it within the namespace itself, not a function in it

alternatively, you could do something like this

user3821550

17:17

Setting ⎕RL to 1 1 in the class script and using ##.? appears to do the trick. Many thanks.

dzaima

don't see why ##. would be needed

2 hours later…

Kamila Szewczyk

18:54

i posted a writeup on metaprogramming in APL, it's probably a bit lame but i like it: palaiologos.rocks/posts/dx-rewrite

RGS

19:35

@KamilaSzewczyk Reading it, but I like the colour scheme

Is it correct to say that it is (inspired by?) the Dracula theme?

Kamila Szewczyk

sort of

RGS

first paragraph “and then move onto implementing it C or C++∙" → “and then move onto implementing it in C or C++”

Kamila Szewczyk

oh - i missed it :P
i'll fix that soon

RGS

The sentence “We check if this token '⍝'=” seems a bit odd to me. I think there is a word missing..?

woo, love the footnote functionality that allows you to jump back to where the footnote is

Kamila Szewczyk

@RGS i mixed APL code with an english sentence

it's meant to say "if this token is '⍝'"

RGS

19:42

@KamilaSzewczyk that I understand, but I would still expect something more in there. Something like “We check if this token is '⍝'” or “We check if this token is ='⍝'”

but hey, feel free to ignore wtv I say; I'm just trying to be helpful ○/

“We take find the index in the table”

Kamila Szewczyk

should be fixed now

it seems like i accidentally messed up the stylesheets and firefox refuses to tell me what's wrong

RGS

@KamilaSzewczyk What's messed up?

Tangent; when you write “I also decided to borrow Adam Brudzewsky’s range function and translate the tradfn alternant from the dfns workspace into a more sane and modern version:”, what are you saying you rewrote?

Kamila Szewczyk

i took Adam's range function nearly verbatim

and I copied+pasted the alternant code and turned it into a dfn.

RGS

If you are talking about alt, it is actually a dfn: dfns.dyalog.com/c_alt.htm

Kamila Szewczyk

the algorithm, variable names, etc.. are still the same

RGS

19:48

That is why it is called the dfns workspace :P

Kamila Szewczyk

oh, well.

dfns.dyalog.com/n_alt.htm

this was a tradfn

RGS

Cool blog post!

I liked the domain extension through unicode characters. I do have a question; how does 60⌶ tokenise series of unicode characters?

Are they split up by the tokeniser?

Kamila Szewczyk

@RGS i tried to add APL386 to the pre code blocks, but the font was proportional for some reason...?

@RGS yes

      60⌶'⍭√⍢⍛⍙…⍗φ⍁ΦΦ⌂'
┌─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┐
│⍭│√│⍢│⍛│⍙│…│⍗│φ│⍁│Φ│Φ│⌂│
└─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┘

RGS

@KamilaSzewczyk I wish I could help, but unless you ask me to test specific things, I'm afraid I won't be able to help much.

Kamila Szewczyk

you can take a peek in the devtools if you feel like it

RGS

19:53

@KamilaSzewczyk Right, I figured I could've just opened the interpreter instead of bothering you 🙃🙃

Kamila Szewczyk

user image

RGS

yeah, I also have Fira Code; I also took a peak at "all fonts in the page" and APL 386 doesn't show up in there.

And also the stylesheets that are loaded for the page don't have any matches for the search "apl"

Kamila Szewczyk

I removed it a second ago

because it didn't work

interestingly enough, this problem occurs only with APL386

RGS

So any other font works well?

Where are you loading the font from? Is it local or are you using some sort of CDN or wtv those things are called

Kamila Szewczyk

i put it in my static folder

and i load it using @font-face { ...

that being said it's late for me already and i'll be heading to sleep.

⍤/

RGS

19:58

Bye, thanks for sharing the blog post ○/

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