The Nineteenth Byte

Aiden Chow

5:14 AM

doesnt this kinda seem like the sandbox: meta.stackexchange.com/questions/377768/…

or am i just going crazy

hyper-neutrino

5:32 AM

i would not at all be surprised if it's inspired by it

a couple of sites have their own sandbox already and i had a discussion about it with the cms at our last meeting

caird coinheringaahing

@AidenChow it's a better version, because it'll (should) be actively supported by SE, rather than some hacky workaround that we use

allxy

While helpful, it can't actually replace the sandbox without a lot of features that SE's probably not gonna implement :|

caird coinheringaahing

Idk, a lot of the features detailed in that post are either equivalent or better than existing Sandbox stuff

The only thing I dislike about it from a Sandbox PoV is

> Questions that are not approved by Reviewers will be auto-published after a defined period of inactivity, except for questions that have received a close vote or flag, or where a Reviewer has asked for major changes that were not made.

hyper-neutrino

i'm not a fan of it being restricted to people who have access to it as reviewers

unless that's something we can custom set

Unrelated String

...yeah for this to replace our sandbox it would definitely need some custom tuning

hyper-neutrino

5:46 AM

@cairdcoinheringaahing yeah i'm not a fan of that cuz it makes it not really practical for us to use sandbox for very WIP things that might take a long time to actually become usable or are purely ideas for a while

~~gonna make a bot that autoflags everything in the staging ground to prevent auto-posting~~

3

pxeger

@allxy now that's a good one

caird coinheringaahing

@hyper-neutrino I don't hate this, but I do prefer the Sandbox being open to all to review

PyGamer0

@pxeger and a kinda useful one :p

caird coinheringaahing

This is definitely doable. It will go on the system with a network-wide default and then would be customizable per site. — Yaakov Ellis ♦ 2 days ago

2

"This" being the inactive posting thing

hyper-neutrino

ah

pxeger

5:49 AM

We'd want it to be settable to "100 years" though

hyper-neutrino

perfect

pxeger

is that doable?

hyper-neutrino

i'd hope "disabled" is a valid setting lol

Unrelated String

set it to 5 years, forget it wasn't disabled, and face a dramatic crisis when the time comes

hyper-neutrino

there are a lot of things i wish SE let us set per-site that would make the site a lot better catered to small sites / weird sites like us that wouldn't even really require any new features

caird coinheringaahing

5:50 AM

@pxeger I suspect so. We have quite a few site specific settings that are "high enough to basically mean never"

hyper-neutrino

lol yeah isn't our autoprotect setting like 10000 answers or smth

allxy

@pxeger The year is 2122. Thousands of low-quality questions are flooding the gates of CGCC. We do not know how much longer we can survive...

6

caird coinheringaahing

@hyper-neutrino Yep, Shog absolutely hiked it up because of the Sandbox

and I think Catija increased it on main a while back as well

hyper-neutrino

yep

allxy

@pxeger Prefix operators already exist in Python, how hard would the postfix ones be to implement?

pxeger

5:53 AM

Postfix would be slightly harder than prefix, but for just a new statement it would work fine

caird coinheringaahing

Just add a __rop__ to all the type classes (where op changes for the postfix op name) :P

hyper-neutrino

if it's only usable as a statement and not an expression does it even matter which side the ++ is on

or is that not what you meant

pxeger

++a would be ambiguous with +(+a)

which, to be fair, is the same in C

caird coinheringaahing

To truly settle the debate, it should be ++a++ and both pre and post increment

8

allxy

@pxeger How does C sort that out?

hyper-neutrino

5:54 AM

i assume it just tries to do ++a if it's not illegal to

pxeger

@allxy C has ++ as a separate token

caird coinheringaahing

@cairdcoinheringaahing I just realised that one reading of this means that ++a++ would add 2 to a

pxeger

and return a+1?

caird coinheringaahing

...oh god, that's bad

hyper-neutrino

tio.run/##Sy4o0E1PTv7/PzOvRCE3MTNPQ1OhWqEotaS0KE/BUEFbW8HIWqH2/… nvm it just tries to do ++ and if it fails it just dies

@cairdcoinheringaahing and even better, it returns the value in between, not a or the final a + 2

Unrelated String

5:57 AM

2 mins ago, by pxeger

and return a+1?

allxy

Oh god, hyper

pxeger

...does Proton have a separate type for 1???

sympy

ah

apparently does

5:58 AM

ah

hyper-neutrino

keep in mind that proton was made several years ago back when i had literally zero knowledge of how to actually make programming languages

lyxal

It also has a type for Half as well

caird coinheringaahing

@allxy Also, One should be callable, and return... well, 1, when called

hyper-neutrino

i kinda want to make a new language sometime now that i've just finished a course that had us literally make a programming language :P

Unrelated String

nice

caird coinheringaahing

5:59 AM

> return postfix_operators[tree.token.content](tree.children[0], symlist)

PyGamer0

@allxy yeah thats why flax doesnt use sympy, i dont need a separate type for one lol

caird coinheringaahing

Proton settles the debate then, ++ is postfix

Unrelated String

i thought i was taking a course like that but it was just implementing a boneless lisp in java

caird coinheringaahing

@hyper-neutrino Are you planning on using the language here?

PyGamer0

@cairdcoinheringaahing Try it online!

hyper-neutrino

6:00 AM

@cairdcoinheringaahing wdym, the language that i plan to make or the one from the course

cuz the one from the course is just an extremely small subset of c++ lol

caird coinheringaahing

Yes

@hyper-neutrino Definitely use it then :P

hyper-neutrino

:p

yeah our assignments were like

caird coinheringaahing

It's already small, it'll do great here :P

hyper-neutrino

ಠ_ಠ

PyGamer0

@hyper-neutrino show the syntax :0

like fizzbuzz

hyper-neutrino

6:02 AM

procedures → procedure procedures
procedures → main
procedure → INT ID LPAREN params RPAREN LBRACE dcls statements RETURN expr SEMI RBRACE
main → INT WAIN LPAREN dcl COMMA dcl RPAREN LBRACE dcls statements RETURN expr SEMI RBRACE
params →
params → paramlist
paramlist → dcl
paramlist → dcl COMMA paramlist
type → INT
type → INT STAR
dcls →
dcls → dcls dcl BECOMES NUM SEMI
dcls → dcls dcl BECOMES NULL SEMI
dcl → type ID
statements →
statements → statements statement
statement → lvalue BECOMES expr SEMI

allxy

@hyper-neutrino Honestly it's not bad

hyper-neutrino

that's the parser specification

@allxy oh trust me it is :P

pxeger

BECOMES?

hyper-neutrino

BECOMES is = lol

anyway yeah i won't disclose much more in case policy or whatever but as you can see it's extremely limited

caird coinheringaahing

@hyper-neutrino For a second, I thought that was a sample piece of code in the language

hyper-neutrino

6:03 AM

lol

PyGamer0

^^

allxy

@cairdcoinheringaahing Lol, same

caird coinheringaahing

Even the most cursed languages don't replace ( and ) with LPAREN and RPAREN :P

hyper-neutrino

well

thanks for the idea

PyGamer0

oh no

caird coinheringaahing

6:05 AM

print lparen quote Hello, World! quote comma end equals quote \n quote rparen

hyper-neutrino

github.com/hyper-neutrino/postfix-lang

IN PARSE COPY 3 SWAP MODULO 110 GOTO SWAP SKIP SWAP SWITCH PROCESS 3 RECIPROCAL MULTIPLY FLOOR 9 GOTO PROCESS "LUCKY\N" SWAP "UNLUCKY\N" SWAP SWITCH POP 0 GOTO PROCESS

allxy

JAVA?

hyper-neutrino

yes

Unrelated String

add an operator that isn't :: but just the literal text T_PAAMAYIM_NEKUDOTAYIM

hyper-neutrino

java was once my primary language

allxy

6:07 AM

@UnrelatedString ^^

#redundancy

hyper-neutrino

what does that mean lmao

caird coinheringaahing

lol, ADDITIVE_INVERSE :P

617

Q: PHP expects T_PAAMAYIM_NEKUDOTAYIM?

Does anyone have a T_PAAMAYIM_NEKUDOTAYIM?

hyper-neutrino

wtf

caird coinheringaahing

It's PHP, what do you expect?

hyper-neutrino

what language is that

or does it not actually mean anything

Unrelated String

6:09 AM

hebrew

pxeger

obligatory phpsadness.com

hyper-neutrino

ah

caird coinheringaahing

> F BIT_FLIP: Pops the top of the stack, flips all bits, and pushes the result onto the stack. Only works on numbers. For example, 7 F will return 0 because 7 = 111, 000 = 0. 10 F will return 5 because 10 = 1010, 0101 = 5

hyper, I do not like this

hyper-neutrino

why not :P

pxeger

so F F is not an identity lol

caird coinheringaahing

6:11 AM

For starters, you'd expect this to be self-inverse, but 7 F F is 1 :P

allxy

Oh god it's on TIO

caird coinheringaahing

(I'm guessing it's 1, I don't actually know)

Unrelated String

oh is that what that is

caird coinheringaahing

hyper, explain

allxy

Wrong link

tio.run/##K8gvLsn5/99cwU3BTe//fwA

hyper-neutrino

6:12 AM

the TIO version isn't updated

or i never implemented the short form of bit flip

@cairdcoinheringaahing is there something wrong with that

pxeger

no worry, I'll just add it to ATO

hyper-neutrino

please don't

allxy

Please don't

pxeger

I'm sure it's a really valuable use of my time and disk space

allxy

Save your server

caird coinheringaahing

6:13 AM

@hyper-neutrino F doesn't change the stack size

allxy

I̷̢̻̼̖̲̒̀̈́̽̕Ṫ̵̢̧̡͈̻͗͝͠͠ ̵͚͙̻̣̣̀̋̓̀̓B̴̥̞̠̻͔̿͂̿͘͝Ë̵̢̩̠͚͚́̈̒̎̒G̵̦̖̦̜͓̔̑̌͒͝I̸̻̞̹̼̤͆̄̄͐̚Ň̴̪͓̤͉͈̂̏͆̈́S̷̰͙̞̥̱͊̅̆͘͘

caird coinheringaahing

*eye twitches*

why is it a float?

hyper-neutrino

¯\_(ツ)_/¯

your guess is as good as mine

allxy

@cairdcoinheringaahing Just did that lol

hyper-neutrino

@cairdcoinheringaahing isn't the link you sent me just hello world

caird coinheringaahing

6:14 AM

You made it :P

@hyper-neutrino Ah whoops

I meant the one that allxy sent

hyper-neutrino

ah

anyway if you want even more cursedness just look at the positron source code

it attempts to build the parse tree token-by-token

i think that's LL0?

allxy

You meant proton, right?

hyper-neutrino

no i meant positron

allxy

Oh great, another one

caird coinheringaahing

unsurprisingly, hyper-neutrino likes naming languages after subatomic particles

allxy

6:17 AM

Lol ikr

hyper-neutrino

i forget how to define functions

allxy

@cairdcoinheringaahing Not entirely

caird coinheringaahing

Branch is actually a cool language :P

pxeger

> final commit

lmfao

allxy

Lol

caird coinheringaahing

6:18 AM

@cairdcoinheringaahing And I'm not just saying that cause I helped name it :P

hyper-neutrino

it's also really cursed

allxy

It's gonna be worse than last time, isn't it

hyper-neutrino

tio.run/##K8gvziwpys/7/…

pxeger

@hyper-neutrino IIRC, it's also got an online interpreter with no sandbox, despite being handwritten C

hyper-neutrino

@pxeger i'm pretty sure i killed that

but you are correct

allxy

6:20 AM

@pxeger If it's on hyper's server, it won't have survived the crashes

pxeger

I remember spending an afternoon trying to find a memory corruption bug, because I was I sure there would be a way to get ACE

caird coinheringaahing

@allxy Proton 2: Subatomic Boogaloo

6

hyper-neutrino

i don't believe it is capable of causing harm since it has too few features to have ACE and it has manual memory and operation counting and commits suicide after enough resources are used

anyway in case you hadn't lost all faith in me yet, here's some positron code

tio.run/##K8gvziwpys/7/…

pxeger

is that @ like Mathematica

caird coinheringaahing

@hyper-neutrino Bash meets Mathematica :P

hyper-neutrino

6:21 AM

yes

except you can't call functions without it

for some reason?

allxy

@pxeger Probably not, coming from hyper.

It's probably the soul-corruption operator

pxeger

I think the soul-corruption operator would be hyper-neutrino himself

caird coinheringaahing

I need to finish the spec for Mixology :/

hyper-neutrino

oh fun fact

@ is also the index operator: tio.run/##K8gvziwpys/7/z9RwVYh2lBHwUhHwTiWi6ugKDOvxCHRwfD/fwA

pxeger

also the same as Mathematica

hyper-neutrino

6:23 AM

oh really?

see i am good at making languages

caird coinheringaahing

No

allxy

And K I think

^^

caird coinheringaahing

Mathematica uses list[[index]]

allxy

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pxeger

oh

hyper-neutrino

6:24 AM

tbh i think i achieved most of the goals i had in mind when making proton

tio.run/##KyjKL8nP@/@/oCgzr0RDQ0NbU0FNwVhTw0RT8/9/AA

even though it has a lot of weird bugs i can't figure out and is overall terribly scuffed

caird coinheringaahing

@hyper-neutrino I think that level of function application is the direct antithesis to Rutger lol :P

Functions taking more than one argument? Nonsense!

hyper-neutrino

lol

pro tip when making coding languages

if you don't want to write a parser just make people write code in ASTs

and call it a "feature"

caird coinheringaahing

@hyper-neutrino even better, if you don't want to write an interpreter, just make people code in the language your language is written in :P

hyper-neutrino

big brain moment

caird coinheringaahing

That's a long line of code: codegolf.stackexchange.com/a/206781/66833

Actually, I have no idea why that works. I overwrite the variable containing the loop during the loop ಠ_ಠ

hyper-neutrino

6:30 AM

lmao what

caird coinheringaahing

Yeah, I have the main loop in the i variable, then immediately overwrite it:

> i=i[{s=Array[Str[$x]];e=Each[$s];e=e[@i]

The e=e[@i] creates a variable i as the iteration variable

allxy

Rutger is so cursed

At least proton looks usable on the surface and is for basic stuff

caird coinheringaahing

Rutger is usable :P

It just doesn't want to be :P

allxy

Lol

CMC: Use Mirror

PyGamer0

6:46 AM

CMP: What should dyadic pq do?

caird coinheringaahing

What does monadic pq do?

pxeger

palindromise? (because it's a visual palindrome)

PyGamer0

wait i mean p and q separatly

pxeger

or horizontal mirror or something

caird coinheringaahing

I'm sat in Geneva airport at the moment, and idk why or how, but my laptop is connected to eduroam wifi O.o

PyGamer0

6:51 AM

CMP: What should p and q do (both dyadically)?

caird coinheringaahing

What do they do monadically? That's the best way to pick a functionality

Unrelated String

just give up on q like jelly did

PyGamer0

@cairdcoinheringaahing flax is fixed arity

caird coinheringaahing

@UnrelatedString Even my fork doesn't have a command for q :P

PyGamer0

@UnrelatedString ok lol

what about q for quotient after division?

wait thats just integer division oof

hyper-neutrino

6:54 AM

make q the quantum command

given two arguments it creates a superposition of the two

pxeger

or, more practically, pick one of the two at random

caird coinheringaahing

Random choice

PyGamer0

how many random choices do i need

i got a monadic one already

caird coinheringaahing

Random choice between the two arguments isn't a bad option if you're struggling to fill out dyads

PyGamer0

well ok

what about p?

pxeger

6:57 AM

given that quit has no return value, you could just make q a dyadic quit which ignores its arguments

even though it should logically be a nilad

caird coinheringaahing

@PyGamer0 That should pick, at random, one of its arguments :P

PyGamer0

or just append :P :P

ok then p is pick

and q is dyadic quit whatever that is

caird coinheringaahing

dyadic quit is just "quit execution", but where it ignores the arguments provided

PyGamer0

ok

    "q": attrdict(arity=2, call=lambda w, x: exit(0)),

wait i have 50 quicks what

and i think i added a fold-fixedpoint and scan-fixedpoint

i can overload a lot on fold and scan ....

Unrelated String

oh yeah what does your fold do on monads

caird coinheringaahing

7:12 AM

I suspect its the same as my fork: <monad>/ is the same as ,<monad>¥/

PyGamer0

@cairdcoinheringaahing well i decided to change it

caird coinheringaahing

I'm heartbroken :P

PyGamer0

@UnrelatedString it does the same thing as k now

Unrelated String

i'm almost thinking an option could be to just consume until it hits a dyad, and compose all the monads along the way onto the right

caird coinheringaahing

@UnrelatedString So DMMM/ would be DMMMʋ/?

PyGamer0

7:14 AM

@UnrelatedString +AJKHFAKJHFAJKFHᐣ´ should do the same thing

Unrelated String

yep

not sure how useful it would be exactly

caird coinheringaahing

That's disgusting, I love it

Unrelated String

but it is an idea

@cairdcoinheringaahing er, i actually meant DMMMƊ¥/, but that might be more useful

caird coinheringaahing

That does the same thing

Unrelated String

er

DMMMƊ}¥/

caird coinheringaahing

7:16 AM

Oh that's worse :P

Unrelated String

much worse

it would pretty much just be a shitty way of mapping the monad[s] over everything but the first element before the fold

versus your interpretation actually inserting something into the fold

caird coinheringaahing

DMMMʋ/ basically allows for "run-time" post processing of the fold, DMMMƊ}¥/ just ^^ yeah

@UnrelatedString Tbh, that's not exactly an easy thing to do. I think Ḣ;MMMƊ€ƊD/ is the shortest

Unrelated String

to compensate for it being useful, the monads should run in reverse order :P

caird coinheringaahing

Random order, randomised between each step of the fold :P

PyGamer0

example for flax's fixedpoint scan: =``W8

exact copy of the k version =\\&8

graffe

7:34 AM

CMQ In python if I want to convert “278.000” to the int 278, do I really have to do int(float(“278.000”)). ?

lyxal

No

Just int("278.000) should work, no?

Aiden Chow

^

no actually it doesnt

wait

hmm

thats interesting

graffe

@lyxal sadly not

PyGamer0

maybe strip the .000?

graffe

int("278.000")

ValueError: invalid literal for int() with base 10: '278.000'

Aiden Chow

7:38 AM

@PyGamer0 tried that, its the same byte count

wait actually strip returns a string, so it would be longer

int("278.000".strip(".0")) longer than int(float("278.000"))

i dont see a shorter way atm sadly

PyGamer0

9
0 1 2 3 4 5 6 7 8
36
1 2 2 3 3 3 4 4 4 4 5 5 5 5 5 6 6 6 6 6 6 7 7 7 7 7 7 7 8 8 8 8 8 8 8 8

i implemented k's monadic & in C lol

Aiden Chow

how do i do a markdown table without the header

best i can do is
||||
|:-:|:-:|:-:|
|stuff|more stuff|even more stuff|

but it leaves a gray line on top

graffe

8:06 AM

@AidenChow thanks for trying!

I actually have a list of these strings so I need the ridiculous [*map(int,map(float(L))]

Aiden Chow

@graffe i think you meant [*map(int,map(float,L))] if im not mistaken

graffe

@AidenChow yes, sorry

it's still ridiculous though :)

Neil

8:29 AM

@allxy I think that's a node from an unloaded document (e.g. frame removed)

allxy

8:44 AM

Interesting and kinda cursed :P

Neil

9:15 AM

@allxy am I missing something or does ({\u006cog}=console);\u006c('\x5b\x2e\x6c\x46') work?

pxeger

@Neil console contains l

allxy

That's ... cursed

TIL

({\u006cog}=conso\u006ce);\u006cog('\x5b\x2e\x6c\x46') works though

But wow that's cursed.

Is JS java now or something?

pxeger

and wtf it literally only works with identifiers

Neil

@allxy should I post that as a crack?

allxy

If you want, sure

Neil

9:23 AM

@RadvylfPrograms ... it's actually a minor plot point in OotP?

allxy

Yeah, umbridge, although doesn't fantastic beasts (the book) postdate OotP?

PyGamer0

Mar 10 at 16:01, by PyGamer0

does flax count in the "array languages" category :P

Neil

@allxy apparently the reference in HP isn't to FB

allxy

@Neil with(conso\u006ce)\u006cog('\x5b\56\x6c\x46') for 45

Neil

@allxy bah, I've closed the window now

allxy

9:29 AM

Oh well :P

Neil

oh I found in my recent upvotes

@RadvylfPrograms only half? slacker

allxy

9:48 AM

Chrome's navigator.userAgent is cursed

'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.36'

Hmm yes

lyxal

12:56 PM

Just been watching gameplay of Patrick's Parabox and holy frick my brain is hurt right now because recursion and cloning

also, I like how VS Code just decided to add coloured brackets in the latest insiders build

PyGamer0

wdym?

rainbow parenthesis?

lyxal

PyGamer0

oh taht

@lyxal are there only 3 colors?

lyxal

yes

PyGamer0

ok

i am forking an existing vim plugin for rainbow parenthesis

Bgil Midol

1:39 PM

CMQ: Online interpreter for HQ9+?

Bubbler

Run any valid solution for the HQ9+ challenge

Bgil Midol

but i need it to ignore invalid chars

Bubbler

Then no

Bgil Midol

1:54 PM

uh

Why can I not write echo*:/2 3 in J?

PyGamer0

@BgilMidol what are you trying to do

and what is the error?

Bgil Midol

2 to the power of 3

PyGamer0

ok

@BgilMidol *: called dyadically is NAND

you should probably get the reference card

Bgil Midol

2:09 PM

whats nand

lyxal

Not AND

Bgil Midol

oh

how do i reduce by pow?

lyxal

^/

taken from jsoftware.com/books/pdf/brief.pdf

PyGamer0

@BgilMidol here is the reference card: code.jsoftware.com/wiki/…

Bubbler

code.jsoftware.com/wiki/NuVoc

graffe

2:57 PM

CMQ given a bipartite graph I can find a maximum cardinality matching using Hopcroft-Karp. But how can I find two different maximum cardinality matchings?

Radvylf Programs

3:49 PM

@Neil Oh, yeah, I think I remember that now. It's been like 8 years since I read the books

Steffan

lol
Wordle 294 2/6

⬜🟨🟨⬜🟩
🟩🟩🟩🟩🟩

ophact

nerdlegame 80 5/6

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pxeger

Wordle 294 3/6

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Radvylf Programs

4:05 PM

Today's wordle word seems very odd

I'm two guesses in and the letters I have have me stumped

Steffan

lol

Radvylf Programs

Wait no it's just a very typical english word lol

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pxeger

Questions have been really slow recently

Radvylf Programs

Yeah, they have. I've been trying to think of one for a while now, I think CGCC just has a collective lack of ideas lol

Plus some of our main question askers have been busy doing other stuff recently

PyGamer0

@RadvylfPrograms i think i have an idea

but idk if its a duplicate

New Posts

4:13 PM

0

Q: Optimally break a string into words

Given a string, like potatocarrot, break it into the smallest number of substrings possible. These substrings can consist either be a single character, or one of a list of words passed as input. For example, if [carrot, potato] was the input, the optimal way to break the string up would be [potat...