The APL Orchard

12:00 AM

:-)

12:19 AM

ModifyRegion ← {
    (board region)←⍵
    corner←2↑region
    size←1+(2↓region)-(2↑region)
    affected←size↑corner↓board
    (size↑corner↓board)←⍺⍺ affected
    board
}

fancy dancy

How do you split a string on spaces (or other chars) again

Adám

Did you try APLcart?

gamma_delta

yes

Adám

What did you search for?

gamma_delta

Oh

not hard enough obviously

Adám

I want to know so I can add your search terms for next time.

gamma_delta

12:26 AM

split spaces I think?

> Fast: A nested vector comprising simple character vectors constructed from the rows of Dm (which must be of depth 1) with trailing blank spaces removed

i'm sure this makes lots of sense if you are any better at apl than i

Adám

Well, that isn't the one you want. Also, why so specific? You wanted other chars too, no?

Anyway, I'll add "spaces".

gamma_delta

12:45 AM

⎕ ← {
    board ← 1000 1000 ⍴ 0
    ⍝ Dummy assignment thing to make it iterate over each command
    _ ← {
        opc ← ⊃⍵
        args ← 1↓⍵
        opc ≡ 'turnon' : board ⊢← {1} ModifyRegion board args
        opc ≡ 'turnoff' : board ⊢← {0} ModifyRegion board args
        opc ≡ 'toggle' : board ⊢← {⍵=0} ModifyRegion board args
        ⍬
    }¨ commands
    +/+/ board
}⍬

Howcome this won't update the board?

Adám

No sure. Did you try tracing through it?

Btw, for this kind of thing, I'd use a tradfn.

gamma_delta

i dont know how to do that because i wrote this in my dyalog script

not the workspace

Adám

Oh, right, you're really missing out on APL's interactive programming.

gamma_delta

Ihave a workspace open

Adám

∇sum←Process commands;board;command;opc;args
 board←1000 1000⍴0
 :For command :In commands
     opc←⊃command
     args←1↓command
     :Select opc
     :Case 'turnon'
         board←{1}ModifyRegion board args
     :Case 'turnoff'
         board←{0}ModifyRegion board args
     :Case 'toggle'
         board←{⍵=0}ModifyRegion board args
     :EndSelect
 :EndFor
 sum←+/+/board
∇

(No need for the ⊢← to update board here.)

gamma_delta

12:51 AM

Ok

and i can just type the carrots in the file?

Adám

Yes.

Also, if ModifyRegion took board as left argument and args as right argument, you could write board{1}ModifyRegion←args etc.

gamma_delta

Huh

oh well

Adám

Btw, {1} is 1⍨ and {⍵=0} is =∘0

gamma_delta

How do you pass in commands ?

Adám

ModifyRegion is a monadic operator, right?

gamma_delta

12:53 AM

it uh, it takes a fn on the left and a vec on the right

Adám

@gamma_delta After the definition, you'd simply say Process commands

gamma_delta

vec of (board region)

TryAPL

@Adám
VALUE ERROR: Undefined name: commands
      ⎕←Process commands
              ∧

gamma_delta

How come it knows what to pass in and what are local variables?

Adám

@gamma_delta Hold on, can I see ModifyRegion?

gamma_delta

12:53 AM

(Also that still doesn't work)

34 mins ago, by gamma_delta

ModifyRegion ← {
    (board region)←⍵
    corner←2↑region
    size←1+(2↓region)-(2↑region)
    affected←size↑corner↓board
    (size↑corner↓board)←⍺⍺ affected
    board
}

Adám

@gamma_delta The first line, with ∇ is a header line specifying that the argument is called commands.

@gamma_delta Ah yes, that's a monadic operator.

gamma_delta

i have tested ModifyRegion and it works

Adám

I think I know what the problem is.

gamma_delta

do tell

Adám

what exactly is the structure of each command?

gamma_delta

12:56 AM

(opc x y x2 y2)

Adám

Hm.

gamma_delta

this generates them from a vec of strings like "turn on 0,0 through 999,999" and "toggle 0,0 through 999,0"

commands ← {
    splitted← ' ' split ⍵
    end ← ¯3↑splitted
    ∊ (∊¯3↓splitted) , (⍎¨ ',' split 1⊃end) , (⍎¨ ',' split 3⊃end)
}¨ input

Adám

Right.

Well, try Ctrl+Enter to trace into Process and then inspect values as you go along. Hovering your mouse over a name should give you a pop-up of its value, but you can also enter the name in the session.

gamma_delta

what is "the session"

Adám

Sorry, the REPL. The interactive, immediate execution, area

gamma_delta

1:01 AM

aha

for some reason ⊃command is getting only the first char

i probably want ⊃command[1] or something?

Adám

@gamma_delta Sounds like the commands don't have the exact structure you thought.

Maybe they are in fact (opc,x y x2 y2) and not (opc x y x2 y2)?

gamma_delta

ParseCommand 'turn on 10,10 to 20,20' is giving me what sure looks like an array of "turnon" 10 10 20 20

if i understand the box view at all?

... it's possible it's giving me like, a flat vector that is like ['t' 'u' 'r' 'n' 'o' 'n' 10 10 20 20]

Adám

Try ]display command

gamma_delta

I ... have no idea how to interpret that

     ]display ParseCommand 'turn on 10,10 to 20,20'
┌→───────────────────┐
↓┌→─────────────────┐│
││turnon 10 10 20 20││
│└+─────────────────┘│
└────────────────────┘

Adám

Yeah, that's a matrix containing a flat vector of mixed types (chars and nums).

Look at ]display -? for help.

But I've gotta go.

Bubbler

1:05 AM

It's pretty much expected because you have ∊ at the end

∊ (∊¯3↓splitted) , ... → (⊂∊¯3↓splitted), ∊...

gamma_delta

ok (?)

(⊂∊¯3↓splitted) , (⍎¨ ',' split 1⊃end) , (⍎¨ ',' split 3⊃end)

is what i've changed it to

playing around in the repl i think that's correct

aha it displays not 0

Bubbler

That would also do I guess

gamma_delta

YAY

thats the answer

man i love aoc

Bubbler

though you can ⍎ the things like 1,1 or 999,999 directly just fine

gamma_delta

Oh

huh

God day 7 looks disgusting

Bubbler

1:19 AM

Oh right that one...

gamma_delta

2:54 AM

help

i entered dyalog from wsl on accident and i can't fiugre out how to leave

Adám

Did you check APLcart?

gamma_delta

I just closed the terminal...

Adám

Or rather, what did you search for on APLcart?

gamma_delta

no i did not search aplcart

this is because it is late and i am stupid

Adám

Nah, you might not have thought it'd say how to leave.

gamma_delta

2:57 AM

That is also true

actually that is very true

i figured it would only have code snippets

Adám

But now, if you search for it, do you find what you're looking for?

@gamma_delta Yes, and APL can close itself under program control.

gamma_delta

that would be like a car's manual telling you how to not get a ticket when pulled over

@Adám I tried a lot of things, ]exit ]quit and with )

oh of course ⎕OFF

how ergonomic ⍨⍨⍨⍨

Adám

?

It happened to me as kid, the first time my father left me alone with an APL system, and I didn't know how to shut it down. I also tried all kinds of words. Eventually I started crying.

It is called "off" for historical reasons, because you used to log off a remote system. APL wasn't an application; it was the "operating environment", so there was nothing you could "exit".

gamma_delta

huh

if i cried around my father he would yell at me to stop until i stopped

Adám

My father had left me there.

gamma_delta

3:08 AM

Anyways is there a good string map structure

other than namespaces, which i hear are kind of a hack

Adám

@gamma_delta The normal thing to do is to have two vectors, one with the keys and one with the values.

gamma_delta

Hm ok

Adám

Then you can write values[keys⍳key]

If you really want a keyed array, then there is the keyed class property.

gamma_delta

how do you left shift / right shift an array without rotating?

just creating extra zeroes and dropping things that fall off

Bubbler

That's exactly how you do it

gamma_delta

3:13 AM

... no how does one do that

Adám

⎕←1↓1 2 3 4,0

TryAPL

@Adám 2 3 4 0

Adám

@gamma_delta What did you search for on APLcart?

gamma_delta

... nothing

sorry i'm on a terrible connection rn

Adám

If you open APLcart in a tab, then you can keep it open. It doesn't need internet.

gamma_delta

3:26 AM

Shl←{(≢⍺)↑⍵↓⍺}

that works

Adám

@gamma_delta Only in one direction.

gamma_delta

Really?

it seems to work with negative rhs

(169 ⊤⍨ 16⍴2) Shl ¯1

for example

Adám

⋄ Shl←{(≢⍺)↑⍵↓⍺} ⋄ (⍳8) Shl 2 ⋄ (⍳8) Shl ¯2

TryAPL

@Adám
3 4 5 6 7 8 0 0
1 2 3 4 5 6 0 0

Adám

Surely, this isn't right.

@gamma_delta Btw, normal practice is that the main data goes on the right and the "parameter" goes on the left. (There are exceptions, though.)

gamma_delta

3:29 AM

... huh yeah

Adám

Maybe the most prominent exception is ÷

xpqz

8:04 AM

@Adám For me, the reason I found trains hard to parse is that they require a bigger 'lookahead' window to keep track of how function arguments "jump around". I'm still curious if others can take in the meaning of a 8-10 carriage train at a glance. I sure can't, and need to use the interpreter's help, or painstakingly draw it out on paper.

rak1507

@xpqz not at a glance but as fast as an equivalent dfn (or faster)

unless it's using a lot of operators, that can make it a bit harder

xpqz

I must be tacitlexic.

rak1507

f∘g∘h∘i - no stop just use a dfn instead

xpqz

@Miguel Great to hear. Did you find the indexing chapter was overwhelming due to the fact that the topic is complex (it is), or that it could have been explained in a better way?

@Adám Awesome. Happy to do a Phase2 one, too, if there's interest.

Miguel

8:25 AM

@xpqz Because the topic is complex 100%

rak1507

9:54 AM

@Adám not sure if it's my bad school internet, but it seems tryapl has slowed back down again (can someone else check?)

Adám

10:30 AM

@rak1507 How about now?

yep, that fixed it

⍨

lol

@Adám Is there a clockwork mechanism you have to wind up at regular intervals?

Adám

No, it just appears to slow down over a day or so, until it reaches an equilibrium with about a half-second of delay. Rebuilding the server temporarily fixes the issue. Mysterious.

rak1507

11:47 AM

@Adám weird

Miguel

11:57 AM

Wow

Adám

3:16 PM

@CharlesHoffmann Hi there. Interested in APL?

Hi @MrV

MrV

Hi @Adam, copy pasted the line in Dyalog and it returned 0.

Adám

I presumed you inserted your user name, right?

MrV

Sorry, I take it back haha it was 1

Did not notice the <User> haha

It was 1 after inserting the userna,me

Adám

OK, good.

How about ⎕NINFO'C:\Users\<user>\Documents\Dyalog APL-64 18.0 Unicode Files\UserCommand20.cache'

You might be able to use ⎕AN⎕R'<user>'⎕NINFO'C:\Users\',⎕AN,'\Documents\Dyalog APL-64 18.0 Unicode Files\UserCommand20.cache' to automatically insert and redact your name.

MrV

It returned the filename and created the UserCommand20.cache

gamma_delta

3:24 PM

Hi, I was asking about string maps here earlier

someone recommended a vec of keys and a vec of values

Adám

@MrV That shouldn't create it, just check if it exists.

@gamma_delta That was me!

gamma_delta

Problem is vals[keys⍳key] doesn't seem to work when key is a string

Adám

@gamma_delta Sorry, you need ⊂key if key is a simple string.

gamma_delta

OK, enclose key?

... what if i have some single-char strings and some many-char strings

Adám

Yes, because you want to look for a scalar in a vector.

@gamma_delta That should just work.

gamma_delta

3:25 PM

ok

MrV

...oh, Maybe after I reinstalled(the 10th time) my dyalog, maybe that created the file. It was not there previously

Adám

@gamma_delta If you write it as vals[keys⍳⊆key] then it works both for key being simple and nested (e.g. for multiple keys you want the value for)

Note the ⊆ rather than ⊂

⊆ is "enclose if simple".

@MrV So now, do user commands like ]box work?

MrV

No

@Adam

Adám

:-(

Still the same errors?

MrV

yeah the same

FILE ACCESS ERROR: C:/Users/<user>/Documents/: Unable to read directory status

Adám

3:30 PM

It really looks like Dyalog doesn't have permissions to your documents folder. Can you try ⎕A⎕NPUT'C:/Users/',⎕AN,'/Documents/testfile.txt'

And then ⊃⎕NGET'C:/Users/',⎕AN,'/Documents/testfile.txt' to see if you get the alphabet.

MrV

It works, I am getting the alphabets. no problem there.

Adám

Hm.

Can you try ⎕CY'salt' ⋄ enableSALT

MrV

@Adám DOMAIN ERROR: Name not copied

↑

getting this error

Adám

OK, you might want a clear workspace first. Try:

)load salt
enableSALT

MrV

Ok done. After the second command getting: SALT already reacts to Editor events

Adám

3:36 PM

Can you do ]ureset now?

MrV

No. Same error as before.

Adám

Hm, after that error, what does ⎕JSON⎕DMX give? (It'll be very long.)

MrV

{"Category":"Native files","DM":["FILE ACCESS ERROR","Dir[11] files←1 3 2 0 6 ⎕NINFO ⎕OPT 1∊path","
∧"],"EM":"FILE ACCESS ERROR","EN":19,"ENX":93,"HelpURL":"https://help.dyalog.com/dmx/18.0/Nativefiles/93","Internal
Location":["pff.c",4117],"Message":"C:/Users/<User>/Documents/: Unable to read directory status","OSError":[1,0,""],"
Vendor":"Dyalog"}

@Adám

Adám

Thanks. Give me a min to look into that.

MrV

Ok. Thank you for your time.

Adám

3:50 PM

@MrV Try running ⎕SE.SALTUtils.(⎕FX'[pe] 2\b'⎕R'& 19'⊢⎕NR'Dir') and then try ]box again.

MrV

@Adam I get this:VALUE ERROR: No result was provided when the context expected one
locateIn[8] files←'a'Dir path←dir ClassFolder name⊣files←,⊂''

@Adam I get this error after trying ]box

Adám

Hm, ok, now close APL and open it again (because I messed with the system), and then try: ≢1⊃1 3 2 0 6 ⎕NINFO ⎕OPT 1⊢'C:/Users/',⎕AN,'/Documents/*'

@MrV I trashed your message because it revealed your name.

MrV

Thank you.

no worries

Adám

FYI, I'm discussing with a colleague.

@MrV What is ⎕AN⎕R'<user>'⍠1⎕SE.SALT.Set'cmddir'

MrV

4:05 PM

I get this: C:\Users\<user>\Documents\\MyUCMDs;C:\Program Files\Dyalog\Dyalog APL-64 18.0 Unicode\SALT\spice

Adám

OK, let's try ⎕SE.SALT.Set'cmddir C:\Program Files\Dyalog\Dyalog APL-64 18.0 Unicode\SALT\spice'

MrV

C:\Users\<user>\Documents\\MyUCMDs;C:\Program Files\Dyalog\Dyalog APL-64 18.0 Unicode\SALT\spice

@Adám

Adám

Right, now try ]ureset

MrV

@Adám It WORKS!

I tried ]box @Adám

Should I try ]ureset, @Adám

?

Adám

No, it should all work now, but you might want to make it permanent: ⎕SE.SALT.Set'cmddir C:\Program Files\Dyalog\Dyalog APL-64 18.0 Unicode\SALT\spice -p'

MrV

4:11 PM

Okay. done

Any thoughts on what happened?

@Adám

Adám

Yes, there's something in your documents folder that has restricted access. So when Dyalog tries to find any custom user commands you might have there, Windows refuses.

MrV

hmmm okay.

Thank you for your extraordinary support. And I feel like I am indebted to you now. I will definitely try to give back to this community in return.

Adám

So now we told APL to not even go look for any custom commands.

@MrV No worries. It is my job :-)

MrV

@Adám interesting stuff.

haha

Okay then, bye. See you again later.

Adám

See you around, and don't hesitate to ask for anything again.

@MrV (You're still allowed to give back to the community, of course.)

gamma_delta

4:25 PM

It still won;t work (the scuffed hashmap thing)

ExecCommand ← {
    (kwires vwires) ← ⍺
    opc ← ⊃⍵
    args ← 1↓⍵

    'LIT'≡opc : ⊃args
    'COPY'≡opc : vwires[kwires⍳args;]
    'AND'≡opc : ∧/{vwires[kwires⍳⊂⍵;]}¨args
    'OR'≡opc : ∨/{vwires[kwires⍳⊂⍵;]}¨args
    'LSHIFT'≡opc : vwires[kwires⍳⊂⊃args;] Shl 2⊃args
    'RSHIFT'≡opc : vwires[kwires⍳⊂⊃args;] Shr 2⊃args
    'NOT'≡opc : ~ vwires[kwires⍳args;]
    ⎕←'Unknown opcode "',opc,'"'
}

this is what I have

Adám

@gamma_delta (It isn't a hashmap, just a map.)

gamma_delta

mhm

⍵ is a vector like ['AND' 'ab' 'cd'] or ['RSHIFT' 'ab' 3]

Adám

You should be able to write {vwires[kwires⍳⊂⍵;]}¨args as vwires[kwires⍳args;]

gamma_delta

it fails on the NOT case, it doesn't seem to believe that the single boxed string is in kwires

Adám

Maybe it isn't? Insert a line before the NOT case that says ⎕←args∊kwires

TryAPL

4:29 PM

@Adám
VALUE ERROR: Undefined name: kwires
      ⎕←args∊kwires
           ∧

Adám

@TryAPL I wasn't talking to you.

gamma_delta

well uh now there's a problem elsewhere

after i did your change removing the ¨

Adám

Wait, is vwires a matrix?

gamma_delta

yeah

it's a 16xN matrix

or like uh, 16 across N down

where N is 26^2 + 26

cause it has one entry for every letter pair plus each letter

Adám

Aha, then no, you can't remove ¨ the way I said.

gamma_delta

4:31 PM

Dang

Adám

Sorry, I missed the ;

(There are other ways to do it, but that's not the issue right now.)

gamma_delta

yeah i'm fully aware this is such a bad way to do this

Adám

@gamma_delta So what happens now?

gamma_delta

index error again

'NOT'≡opc : ~ vwires[kwires⍳args;]

Oh also your debug print prints 0

⎕←args∊kwires

that one

TryAPL

@gamma_delta
VALUE ERROR: Undefined name: kwires
      ⎕←args∊kwires
           ∧

gamma_delta

4:33 PM

shut up tryapl

Adám

Aha, so args really isn't in kwires.

gamma_delta

guess not

Adám

You might want to trace through and inspect your values.

gamma_delta

huh

it thinks it has a space surrounding it

like it's seeing " lk " and not "lk"

i think

Adám

Maybe it is enclosed one time too many? Do you have ]boxing on?

gamma_delta

4:38 PM

... im running this as a script

I should probably stop doing that

Adám

Yeah, interactive coding is much better.

gamma_delta

aha

Adám

?

gamma_delta

for some reason, only in the not case, it's being boxed

Adám

Well, I can't see your ⍵s so it is kind of hard to tell what's going on.

Can you give an example of a NOT case ⍵?

gamma_delta

4:45 PM

hang on i got this i think

ok this should be it

Ok now i have some new problems love that

Adám

:-)

gamma_delta

i know what it is though, i need to box all the single chars too

Adám

Box or ravel (and box)?

gamma_delta

... um

So the problem is it can't find 'a' in a vector for some reason

or actually 'x'

args = ('x' 5), and i'm doing kwires⍳⊂⊃args

and that's returning out of bounds

Adám

Try with args←(,'x')5

gamma_delta

4:53 PM

yeah i need to like, map , over the letters when making the array i guess?

Adám

If they are single characters, then yes ,¨ will do.

gamma_delta

new and exciting errors

Adám

Enjoy the ride!

gamma_delta

Oh that's just great

i misunderstood the problem statement

i need to handle variables /and/ numbers on both sides

wauugh

Ugh

APL is a terrible language for this problem

i might skip it

Kamila Szewczyk

5:10 PM

solving stuff in APL is sometimes five stages of grief for me

APL is absolutely trash for some problems, and really good for others

don't bother with APL if it doesn't work, at least that's my stance

rak1507

can't get better by giving up

here's my solution if you wanna see @gamma_delta github.com/rak1507/Advent-Of-Code-APL/blob/main/2015/…

awagga

I don't think I've ran into a problem that didn't have a decent solution in APL, some problems definitely take some clever and roundabout approaches, though.

There's always your local Dzaima if you need a better perspective on something :)

rak1507

haha true

dzaima

for me, things that are better not made in arraylangs are things that take lots of control flow. but, since that has a prerequisite of having lots of code in general, it takes quite a bit of complexity to reach that

gamma_delta

5:26 PM

How can I check how many of a set of substrings are in a string?

i dont think i understand ¨

my thought was '\\' '\"'∊¨'"\"msoytqimx\\tbklqz" but i get length errors?

rak1507

5:47 PM

¨ is like 'zipwith' in other languages, it iterates through both arguments

you may want ∊¨⊂ ?

oh, also ∊ won't do what you want there

⍷ may be more useful

⋄ '\\' '\"' ⍷¨⊂ '"\"msoytqimx\\tbklqz"'

TryAPL

@rak1507
┌─────────────────────────────────────────┬─────────────────────────────────────────┐
│0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0│0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0│
└─────────────────────────────────────────┴─────────────────────────────────────────┘

gamma_delta

hm ok

rak1507

there's a secret weapon for this question

tio.run/##SyzI0U2pTMzJT9dNzkksLs5M/v//Ud9Ur2B/v///AQ visit this link for a spoiler

gamma_delta

6:06 PM

Is it "use regex"

i swear day 5 was also "just use regex"

@rak1507 i dont understand what any of that means

OH

THAT'S CHEATING OH MY GOD i love it

HAHAHAahaha oh my god hahahaha

rak1507

6:28 PM

:)

gamma_delta

8:06 PM

re: that, it doesn't like the \xXX escapes

Adám

@gamma_delta ⎕←'\x42'⎕R'\l&'⊢⎕A

TryAPL

@Adám AbCDEFGHIJKLMNOPQRSTUVWXYZ

gamma_delta

what does that do?

Adám

Lowercases "B"s.

Or were you talking about ⎕JSON?

gamma_delta

yeah ⎕JSON

⎕←⎕JSON'"\x22"'

TryAPL

8:10 PM

@gamma_delta
DOMAIN ERROR: JSON import: invalid string at offset 3 (⎕IO=1)
      ⎕←⎕JSON'"\x22"'
      ∧

Adám

⎕←⎕JSON⍠'Dialect' 'JSON5'⊢'"A\x42C"'

TryAPL

@Adám ABC

Adám

\x escapes are not in the JSON spec.

gamma_delta

... really

huh

Adám

gamma_delta

8:11 PM

nice

Adám

However, JSON5 does:

> Any character may be escaped. If the character is in the Basic Latin or Latin-1 Supplement Unicode character ranges (U+0000 through U+00FF), then it may be represented as a four-character sequence: a reverse solidus, followed by the lower case letter x, followed by two hexadecimal digits that encode the character’s code point. A reverse solidus followed by the lower case letter x must be followed by two hexadecimal digits.

rak1507

8:31 PM

@gamma_delta yes, I had the same issue

Adám

Announcement: rogerhui.rip

4

Roger Hui's Celebration of Life - October 30, 2021 at 2:00 pm

►

rak1507

interesting thing: 1⎕JSON⍠'Dialect' 'JSON5'⊢'""'

@Adám thanks, maybe that should be pinned?

Adám

There's a link from the memorial page to the video.

@rak1507 What's interesting about it? Happens that APL and JS agree on that.

rak1507

@Adám just interesting that it mixes single and double quotes, didn't know it could do that

it means JSON5 isn't backwards compatible with regular JSON, I thought it just added things (like \x escapes)

Adám

JS(ON5) allows it, so we choose the most appropriate.

rak1507

8:36 PM

yeah, not complaining, just surprised me

Adám

JSON5 is just a larger subset of ES5 than JSON is.

@rak1507 When we generate JSON5, we include a lot of nice touches:

      ⎕JSON⍠'Compact'0⊢⎕SE.SALT.SALT_Data
{
  "LastWriteTime": "(unavailable)",
  "SourceFile": "C:\\d\\SVN\\salt\\trunk\\core\\SALT.dyalog",
  "Version": 0
}
      ⎕JSON⍠'Compact'0⍠'Dialect' 'JSON5'⊢⎕SE.SALT.SALT_Data
{
  LastWriteTime: "(unavailable)",
  SourceFile: "C:\\d\\SVN\\salt\\trunk\\core\\SALT.dyalog",
  Version: 0,
}

rak1507

unfortunately it makes my problem 8 aoc solution slightly less nice

Adám

Notice the trailing , after the last member, and the lack of quotes around member names.

rak1507

because I have to use ⎕JSON⍠'Dialect' 'JSON5' for part 1, and ⎕JSON for part 2

dzaima

@rak1507 well, adding \x escapes is also not backwards-compatible the same way as quotes - code generating it won't generate valid JSON

Adám

8:39 PM

@rak1507 You have to generate JSON?

rak1507

@dzaima generating \x escapes no, but I assumed JSON5 would always output backwards compatible things and just allow reading more

@Adám yes

well, you have to 'escape' characters in a string

Adám

@rak1507 No, if you ask for JSON5, we'll use all the tools to make the output as nice as possible.

dzaima

@rak1507 JSON5 defines what is valid syntax, not what to always output or read

rak1507

@Adám makes sense

@dzaima fair enough

dzaima

a valid JSON5 outputter would be a regular JSON outoutter

what's the point of an extended JSON if nothing can output it

rak1507

8:42 PM

well the main benefit to me is being able to read in more things not to output it

Adám

Heh, though it is called ⎕JSON, it can actually generate JS: ⎕←⎕JSON (⊂'10%3')(⊂'!``')

TryAPL

@Adám [10%3,!``]

Adám

I made a little library:

      js.Eval ⎕JSON (⊂'10%3')(⊂'!``')
┌─┬──────┐
│1│┌────┐│
│ ││true││
│ │└────┘│
└─┴──────┘

Miguel

Hey everone! how are you doing?

Adám

8:57 PM

Hi Miguel. I'm good. Getting ready to go offline.

gamma_delta

ugh this is gonna be a p a i n

i need a weighted graph

rak1507

ah, that question

there are some handy things in dfns.dyalog.com/n_contents.htm

or you could probably do dumb bruteforce as it's pretty small

gamma_delta

i'm thinking about the data structure actually ... oh here's an idea

a matrix for vals, and then a key showing which row/column each is at

like a multiplication table

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