The Nineteenth Byte

ASCII-only

12:02 AM

@HyperNeutrino ... use mine

Οurous

12:18 AM

Is there an SE for finding novels you read many years ago and only remember vague details of?

DJMcMayhem

@Οurous Lit perhaps, but you'd have to check if story-ID is on-topic first

Οurous

Ooh yeah they have a tag and a bunch of questions for that. So does scifi. Didn't know about that tag.

Probably gonna try scifi since it's in that domain and it's a bigger site.

Thanks

Anonymous

Basically every creative arts site (music, lit, sff, m&tv, others that I can't think of right now) allows ID questions

Veskah

12:35 AM

I think my mouse-wheel button has died in the past day. Which is annoying because I tab all the things

quartata

12:48 AM

so i think there was a CMC before asking for the longest word with alternating vowels/consonants and i suggested that could be made into a fun chat game where people had to match simple regexes

anyone want to try that

Veskah

.*

quartata

well thats boring but yeah sure

wed do it in sandbox or something not in here

Veskah

I was just being cheeky, lay one out. You'll get bites

quartata

3 players would suffice. the winner of a round would do the next regex

Οurous

@quartata ^Well clearly, since it could be quite silly\. What with the ability to force humiliate or fail\.$

You might need to restrict it to "there must be an infinite number of potential matches to said regex"

Mmmm. Or "you must be able to construct an infinite, non-repeating sequence, which matches the regex"

quartata

1:00 AM

im content with an honor rule that you have to have some matching word in mind when you do the regex. people dont go into contact and make up the letters as they go even though they could

maybe i should have suggested this in the sphinxs lair :p

Veskah

Hmm, you could run with that. "I'm thinking of a word, <clue>, <complex regex>"

quartata

the longest word is what appeals to me

Veskah

Oh, I was still in the mind of jibberish padding for some reason.

quartata

for instance i have a really simple one right here: .*z.*ed obviously zed matches, but im confident there are others. i dont have to know the winner

Veskah

Razzled

Actually Zombified is 2 better, but that was just an example so I'll stop thinking it over

quartata

1:08 AM

bedazzed ties

Tiebreaker would probably be who posts first

no using a dictionary of course, like all the other word games here

oops i misspelled haha bedazzled

Quintec

@quartata Zendo, but PPCG style

Jo King

@JoKing In any event, as have previously mentioned, we speak different languages; and more than likely view the world (including the "community" and "rules" therein) completely differently.

I wonder why this guy got banned from chat...

Quintec

Or maybe it's Contact PPCG style or both

Jo King

45 comments and counting

quartata

its kinda like zendo yeah. but with languages rather sets of numbers

Quintec

1:11 AM

@JoKing Lol why are we the only two that even try... because everyone else already knows it's a lost cause :P

quartata

well. reverse zendo. you know the rule

xnor

@Quintec I just downvoted it and moved on

Jo King

@Quintec I'm a masochist, I don't know about you

quartata

anyways does anyone want to actually play it lol

Quintec

@JoKing Fair

@quartata Create a chatroom for it lol I might as well

Veskah

1:13 AM

I would

quartata

hmm whats a good name

Veskah

Regdo? Zendex? Nerds doing nerd things?

Quintec

(reg|zen)(ex|do)

quartata

string + supremum = strupremum :P

Veskah

Oh man, someone's probably going to do gross things with capture groups

quartata

1:17 AM

nothing more advanced than BRE

Quintec

My regex skills are extremely poor

Jo King

@Veskah (.)(.) heh

Veskah

@JoKing Ayyyy

Quintec

.*lll.* fun thought

quartata

1:35 AM

sorry was afk

Strupremum

For playing the game Strupremum, where players compete to get ...

5

Veskah

Man, wish I could see part 2 of AoC without actually doing part 1

ASCII-only

@Veskah ...

@Veskah you need the stuff from part 1 for part 2

Veskah

I just want to see the prompt, yo.

Quintec

lol

Veskah

Had no real intention of doing it

ASCII-only

1:47 AM

@quartata use linux dictionary :P

@Veskah :|

@Veskah it literally takes an hour. max

Veskah

And?

ASCII-only

@NathanMerrill ~~only because moderin programming languages are terrible~~

@Veskah just use other people's code maybe

github.com/petertseng

Veskah

Danke

Riker

@Mego false, MTV has banned ID questions, anime has banned them for a long time, music has banned music ID questions (but still has instrument along with pictures), gaming has cracked down with only real pictures/screencaps allowed

yeah SFF and lit still allow them, but they've had such a troubled and tortuous past I don't think it's fair to say "basically every creative arts site" without listing caveats

(I was on lit for the beta and around on mtv for the banning of ID)

Οurous

2:17 AM

I find myself frequently wishing for an operator that checks if the difference between something and something else is less than or equal to one. Not only in code golf, just in general. I seem to check for that a lot.

Riker

do you mean 0 < diff < 1? or just <1

Οurous

@Riker abs(diff)<=1

Shieru Asakoto

3:00 AM

I wonder why most of the languages don't have sth like a < n < b

That's so handy

especially when n is like Input.touches[0].position.x

Οurous

In most functional or C-like languages that would need to be special-cased heavily since either a < n or n < b would result in a boolean, since < :: a a -> Bool and it wouldn't make sense for it to have a different type sometimes.

Shieru Asakoto

So Python made it specifically?

or just like a syntactic sugar?

feersum

It is really not that difficult to parse it. That's not a real reason.

Οurous

@ShieruAsakoto Basically.

moonheart08

Thanks, GCC. You're the best.
It optimized away the entirety of the "make_kernel" function for TPT's atmos. Literally just loads a precomputed value

godbolt.org/z/h52iFN

altho it seems clang might do a better job than GCC at compacting the actual remains

feersum

3:16 AM

lol, was not expecting a vector instruction

moonheart08

ALWAYS expect a vector instruction :P

feersum

Is that actually even faster when it's only used once?

Οurous

@feersum The issue I was raising isn't with parsing, it's with knowing when < should be chained. What if I define an arbitrary comparison operator ?!?! :: a a -> Bool? What if I define int operator<(int n);?

moonheart08

@feersum I'm just impressed it vectorized the complex loop. It's literally a constant that's only computed once anyways.
What I find absolutely hilarious is how badly the otherwise good ICC fails at optimizing it.

feersum

@Οurous I assume you'd disallow non-boolean return values.

moonheart08

3:18 AM

@feersum I'm just impressed it vectorized the complex loop. It's literally a constant that's only computed once anyways.
What I find absolutely hilarious is how badly the otherwise good ICC fails at optimizing it.

MSVC fails in a similarly horrible manner

feersum

I imagine it's more along the lines of (1) converting loop to 9 MOVs (2) convert MOVs to use vector instructions, rather than actually vectorizing a loop.

Οurous

@moonheart08 My experience with MSVC ranges from "how did it do that?" to "why is this so slow?"

moonheart08

s/vectorized/executed at compile time/

feersum

The real test though, is to try making it a constexpr.

moonheart08

@Οurous unsuprised. MSVC is the mixed bag of mixed bags

feersum

3:20 AM

Ideally you should be able to have the data baked in at compile time without the copying step.

moonheart08

@feersum the REAL test is to rewrite The Powder Toy to actually use the GPU instead of it's massive software renderer

Οurous

@moonheart08 Native multi-gpu please

moonheart08

@Οurous CPU-bound shaders.

Οurous

@moonheart08 just add more threads it's easy and it'll make it faster :P (but seriously since we're talking about GPU rewrites)

feersum

Wait a minute, I just realized GCC is not doing a good job at all.

You use the variables i and j without initializing them.

moonheart08

3:23 AM

TPT has too much legacy C in it's graphics code to be touchable in the slightest

feersum

Therefore a better optimization would be to crash immediately.

5

moonheart08

@feersum doesn't the for loop entry init them?

feersum

Oops, I missed the one that initializes i.

moonheart08

That's still a star-worthy quote. Enjoy your minute of internet fame, stranger.

Οurous

@moonheart08 I'm conflicted because I both understand that position and love spending time unravelling and refactoring old C and hand-written assembler.

feersum

3:26 AM

Whoa, making it constexpr actually works.

godbolt.org/z/vmLsih

moonheart08

@Οurous So am i :D

@feersum Seriously? Make a PR pls am on a chromebook so i can't do it right now

feersum

I have no idea where this code is from.

moonheart08

/me gets link to air.cpp

github.com/ThePowderToy/The-Powder-Toy/blob/master/src/…

now you do

welcome to the legacy hell that is TPT, the coat eater is over there.

Parts of the code are so old and poorly written they don't even use C's builtin floor function. (opting for the +0.5 trick instead)

We have a rendering engine that's entirely in software, and yet we're trying to add controller support

Οurous

Pshhh we have hand-written assembler that hasn't been touched since it was added to version control 18 years ago, and was already older than that at the time. I mean I'm not sure if it's classical "legacy code" since as far as anyone can tell it works perfectly and hasn't needed to be changed.

moonheart08

Can't argue with that

Οurous

3:37 AM

I'm just hoping nobody wants it to be 64-bit at any point.

moonheart08

hahaha

TPT desperately needs optimized in a lot of places

Doorknob

3:58 AM

@Riker thanks!

Riker

@Doorknob I for one accept our new knobbed overlords

Veskah

4:08 AM

Strupremum went pretty gud

New Main Posts

5:28 AM

0

Q: Sino-Korean numerals

The Korean language has two sets of numerals, a native Korean numerals and Sino-Korean numerals. The native Korean numerals are mostly used for numbers under 100, such as age and time. The Sino-Korean numeral system, which is based on the Chinese numeral system as its name says, is used in most...

betseg

5:42 AM

@dzaima happened again :(

dzaima

6:08 AM

@betseg yep to me too. though mine does't work for tne 18 either (and i forgot to try my actual input :|)

betseg

my p2 program had an unnecessary loop that p1 needed but p2 didnt, i removed it and its fixed

dzaima

6:24 AM

oh found my mistake. reminder to self: don't ignore it when magic constants randomly appear

ASCII-only

8:14 AM

@moonheart08 how would it not fully be software

@feersum of course. But basically every single language still needs to specialcase it

@Veskah if you want it easier I have JS code you can practically paste into the console of your data page

Anush

10:31 AM

hi all

primo

howdy

Anush

today I am being driven mad by small things involving google sheets

e.g. how do you log into google sheets without just googling "google sheets"? From gmail for example if you click on the 9 dots in a square in the top right lots of google apps are listed but not sheets

feersum

@Anush sheets.google.com ?

lol I just guessed without even knowing it

Anush

@feersum and you are right! But am I being blind in not seeing it in the long list of apps you get from clicking on the square with 9 dots?

feersum

Who would want to do that anyway?

primo

10:36 AM

the settings bar -> more tools -> create shortcut

tick the open as window, and it will create a shortcut that opens as if it were an app

Anush

@feersum someone who wants to click their way to happiness :)

but fair enough

ok second thing that annoys me about google sheets... :)

I have to produce an excel spreadsheet with row height 100 and column width 25. But if you make the spreadsheet in google sheets and then download it as an excel spreadsheet you get numbers like 24.38 width.

So I now have to make it all in google sheets. Download it as excel, send it to someone who then changes the 24.38s to 25

grrr :)

primo

@Anush furthermore, after you've done that, it will appear in your chrome://apps/ tray

Anush

@primo oh even better, once you are in sheets and you click the 9 dots it gives you an option of adding the shortcut!

problem a) solved.. Thank you!

maybe there is a *.SE site where someone wants to find a fiendish way to get round my row height problem

if only I could change the row height in excel from the command line!

feersum

Have you tried regex?

Anush

.xlsx is a binary format sadly

unless there is a good library to read it

hmmm.. openpyxl can at least load it

(Python)

maybe I should set a challenge to make an xlsx file with row height exactly 100 according to Excel :)

H.PWiz

10:57 AM

Does anyone know why I'm not getting what I want here in perl 6. I want to be able to print the next number in a seq, after some number that I know. For example, (without the ».say) I would expect this to print 11

primo

@Anush .xlsx is actually just a zip file

Anush

@primo ah interesting

primo

@H.PWiz tio.run/##K0gtyjH7/9/wUcMyLVtbQwM7Lb3ixMr//wE

as to why yours doesn't work, i honestly don't know :p

@JoKing might be able to tell you

ASCII-only

@H.PWiz tio.run/##K0gtyjH7/1/D8FHDMi1bW0ODw9O19IoTKzUP7QZR//8DAA

Wait

That's not what you want nvm

H.PWiz

@primo Nice, didn't know about using > like that

ASCII-only

11:08 AM

@H.PWiz note that that is still the greater than operator

Iirc

H.PWiz

I see it's actually on the tips page

ASCII-only

@H.PWiz wait, why would that work

Would it not print 10

This kinda works? tio.run/##K0gtyjH7/99Qx1BHS1vrUcOyapV4OyNDNTWVeL3ixMra//8B

H.PWiz

It uses two arguments, if there are two *s. Like in fibonacci

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Non-unique Matrix Diagonals code-golfmatrixarithmeticnumber Challenge: Given a matrix input, determine the amount of diagonals with duplicated numbers. So if we have a matrix like this: [[aa,ab,ac,ad,ae,af], [ba,bb,bc,bd,be,bf], [ca,cb,cc,cd,ce,cf], [da,db,dc,dd,de,df]] All diagonals wou...

ASCII-only

@H.PWiz I thought that doesn't work in the stop condition, but idk

H.PWiz

11:18 AM

@ASCII-only primo has already provided an answer.

@ASCII-only apparently it does

ASCII-only

@H.PWiz wait, what do you even want to do

Just print the next element?

H.PWiz

Yes

Imagine my seq is more unpredicatable

ASCII-only

Then why did you even include the hyperoperator in the first place >_>

H.PWiz

I can't remember why I put that in. Just to show that the list was terminating before it should, maybe

ASCII-only

@Anush there is...

@Anush yes. No offenders, but IIRC it's pre-installed on newer Chromes, if not just get it from the web store

Anush

11:26 AM

@ASCII-only Did you mean to reply to me?

ASCII-only

@Anush you don't even need a program... Select all the rows you want to change. Right click. Row height. Same for columns

@Anush yes

Also, *offense

Anush

@ASCII-only So in google sheets, the row heights are in pixels but in excel they are in points. There is no way to specify row height in points in sheets that I can see

ASCII-only

@Anush iirc they are pixels in excel too

Anush

@ASCII-only the default is points. quora.com/…

ASCII-only

@Anush have you tried typing "10pt" in Google sheets

Anush

11:28 AM

@ASCII-only even worse.. in sheets the column width is in pixels but in excel it's some function of a character width

@ASCII-only Yes that doesn't appear to be valid syntax in sheets

it is in libreoffice however

H.PWiz

I can print the 1000 digits after the decimal point of e in 26 chars of perl 6 :)

ASCII-only

@H.PWiz :|

Anush

@ASCII-only so I can set the row height but not the column width correctly in libreoffice and I can set neither correctly in google sheets

which is a total pain

primo

@H.PWiz takes me 27 :(

Anush

I was wondering if I could set them using python which has a module for editing xlsx files it seems

H.PWiz

11:32 AM

@primo It used to for me as well. Still using integer arithmetic

primo

@ASCII-only the ~v^ format string is a great tip, saved me bytes in a few challenges, so thanks for that

ASCII-only

11:46 AM

@primo wait, what

@primo where's this from

primo

11:59 AM

@ASCII-only you left a comment on a lisp answer suggesting ~v^

ASCII-only

12:11 PM

@primo oh, finally found it. Chances are, like all smart golfs, I found it on anagol

Or... Well... Just taken from the previous revision actually

primo

another one that's helped a lot is (format(condition)"~d"n)

if condition is false, it won't output anything

(format(> n 0)"~d"n)
(format t"~v^~d"n n)

works out the same in this case

ASCII-only

:O that's smart

New Sandboxed Posts

12:35 PM

0

A: Sandbox for Proposed Challenges

Subtract the Folded Matrix code-golfmatrixarithmeticnumberinteger Challenge: Given an NxN matrix where N >= 2 and one of eight distinct 'folding options', output a 2D array/list with the subtracted values. The eight folding options are: left-to-right; right-to-left; top-to-bottom; bottom-to-t...

New Main Posts

1:09 PM

4

Q: How many syllables in that number?

I'd love to take a number and know how many syllables are in it, when spoken in English. Let's limit this to positive integers which are less than one thousand. I'm British, so we're going to follow the hundreds column with an 'and' when there are any non-zero digits after it. The Challenge ...

code-golf

New Sandboxed Posts

1:37 PM

0

A: Sandbox for Proposed Challenges

Path Rerouting grid graph-theory code-golf Given a grid of directions and a start and end position, determine the minimum number of substitutions in the direction grid that needs to be made to complete the path between the two points. The grid is doubly-cylindrical. This is clearer given an exam...

primo

alright, i'm done with lisp

the rest of the challenges i'd rather not do

ASCII-only

O_o that was fast

primo

the roman to arabics are quite short too... i should probably do that one also

maybe also sierpinski

ASCII-only

And then there's me

Still 10 bytes behind you in lisp divisors

primo

1:53 PM

it's the same trick i used in J, surprisingly

ASCII-only

Huh

primo

the problem with dotimes is that your looping variable starts at 0

ASCII-only

Yes

primo

so don't use mod. there's other mathematical functions that can serve the same role

ASCII-only

Oh, I must have been overthinking >_>

ASCII-only

2:14 PM

Ok. Turns out I'm to bad at math to figure it out

feersum

Websites are always refusing my credit cards for no good reason.

So I think I need to buy some bitcoins instead.

primo

(=(mod n i)0) == (=(gcd n i)i)

feersum

What's a good way to buy them (without a credit card!)

primo

... or trading other digital currency? ;)

ASCII-only

@primo :| of course, the functions related to factors

feersum

2:17 PM

I can trade other digital curriencies if it doesn't bottom out with a credit card :P

ASCII-only

@feersum ~~get a crapton of specialised cryptocurrency mining cards~~

feersum

One possible answer would be if you can trade a gift card for them.

primo

also, am i the only one who keeps misspelling coerce?

i suck at markup

Luis felipe De jesus Munoz

2:32 PM

0

A: Sandbox for Proposed Challenges

Working time This is actually helpfull =D Given as an input Start Date YYYY-MM-DD HH:mm:ss End Date YYYY-MM-DD HH:mm:ss List of Holidays [YYYY-MM-DD, YYYY-MM-DD, ...] Your task is to output the amount of working time between the two first dates. (You may output the total seconds or any ot...

New Sandboxed Posts

I don't like sand. It's coarse and rough and irritating and it gets everywhere.

Geobits

3:46 PM

I love this question at The Workplace: workplace.stackexchange.com/q/124711/25589

10

Post Left Garf Hunter

Would anyone like to play strupremum? I've been itching to play it.

quartata

im here

0 '

@PostLeftGarfHunter I'd be interested

AdmBorkBork

@Geobits That person has a promising career change ahead of them.

Geobits

4:02 PM

Yeah, I clicked into it expecting it to be the usual bitchy griping, but was pleasantly surprised

Poke

was that in hnq

Geobits

Yeah, but with only +6 at the time I saw it. Must be a slow day at TW

Poke

hmm i didn't see it earlier when i was browsing. unlucker

My friend just had a kid and made a joke that Dominos wanted to hire his wife because she is so good at delivering. I commented that I'd be upset if it took 9 months for my pizza to arrive.

I hope he doesn't get mad

Geobits

Get enough women to do the pregnancy in parallel, and you can have a baby in a matter of days

4

Pro tip: Make sure you have everyone's agreement, or nobody's going to be happy about this

Dennis

That introduces a lot of race conditions...

5

Geobits

4:11 PM

Eh, those can be worked out post-release

That's what the big companies do, right?

Poke

I think I saw a relevant hnq the other day but I can't find it now

Geobits

Probably the mage-power one on Worldbuilding. Saw it this morning.

Poke

yeah that one sounds right

Pavel

4:37 PM

what one?

J. Sallé

Almighty diamond people, can someone give this guy write access to this room, please? @Dennis @Mego @DJMcMayhem

DJMcMayhem

On it

J. Sallé

Thanks :D

DJMcMayhem

Actually I can't for whatever reason. It says his chat account doesn't exist?

I'm not sure what to make of that

J. Sallé

@DJMcMayhem Damn, I'll talk to him. Thanks anyway

Dennis

4:41 PM

I assume they have to have logged into chat at some point.

J. Sallé

Yeah he literally just created his account, I forgot chat accounts are separate entities

Okay he's just made his chat account now, can you try again please?

DJMcMayhem

Done

J. Sallé

Thanks <3

New Sandboxed Posts

6:15 PM

0

A: Sandbox for Proposed Challenges

Is it Valid Modified UTF-8? code-golf string decision UTF-8 is a relatively simple way to encode Unicode codepoints in a variable-width format such that it doesn't easily confuse code that isn't Unicode aware. UTF-8 overview Bytes in the range of 0-0x7F, inclusive, are normally valid Bytes...

New Main Posts

6:49 PM

1

Q: Standardize the Samples (Compute the z-Score)

Given a list of floating point numbers, standardize it. Details A list \$x_1,x_2,\ldots,x_n\$ is standardized if the mean of all values is 0, and the standard deviation is 1. One way to compute this is by first computing the mean \$\mu\$ and the standard deviation \$\sigma\$ as $$ \mu = \frac1...

code-golf math array-manipulation arithmetic statistics

FlipTack

7:43 PM

I'm aware the way I've scored this is quite terrible, anyone suggest a better way? Maybe golf the source and get its byte count?

ASCII-only

8:00 PM

@FlipTack what's the limit of the value in one RAM unit (?)

FlipTack

@ASCII-only 999, making it 10 bytes minimum

I think sticking with the source is best, after all it's just a bit of fun

ASCII-only

*10 bits

FlipTack

ofc, spelling mistake

**brain fart

ASCII-only

Wonder if this should go on TIO

Can't output letters do in not sure if it's worth it

FlipTack

yeah, it's just a really simple example of assembly language invented to teach students with

ASCII-only

8:10 PM

@FlipTack it's not slow though. There's something called a run button >_>

@FlipTack but... Yeah. This is your only option if you don't want to go into exotic storage counting formatd

AdmBorkBork

8:25 PM

Huh. No one has yet answered that question in PowerShell.

Post Left Garf Hunter

CO- is an endofunctor on the category of category theory terms

quartata

8:40 PM

wow. i m so pleased that so many people enjoy my little word game. i would enjoy it even more if you woulf pay me $50.00 to play please.

Cows quack

i hope you like zimbabwean dollars

quartata

50 USD, any condition

no bills. coins only

Pavel

@quartata I dislike the ban on look(ahea|behin)ds

ETHproductions

@quartata I hope you like 5000 pennies

quartata

yes i would. as the previous post implies

AdmBorkBork

8:44 PM

@Pavel I see what you did there.

DJMcMayhem

TIL: Community can wear a hat

Erik the Outgolfer

there's more than enough spam on SE... ;-)

AdmBorkBork

But not enough on Cooking

Erik the Outgolfer

so... if there are x spam posts, there are (x+1) too many :P

lirtosiast

@FlipTack The number of chars in the source isn't as fun to golf as the number of instructions (since labels and other interesting things are never optimal). I think it should be scored as either 2 or 3 bytes per instruction, with the understanding that it's really the binary or decimal of the instruction numbers.

Zacharý

10:25 PM

Hey, Ð!

@AdmBorkBork LOL.

ETHproductions

ý hello there

Jo King

@H.PWiz I think the && is evaluated first. So the *.say ends up as the condition. For example, Try it online!

xnor

10:55 PM

Is there a nice way in Python to make integer arithmetic bounded, like how large floats become inf, so that calculations like 2**2**100 don't hang the program?

This isn't for golfing, libraries are fine.

Erik the Outgolfer

so, you want to make some sort of fool-proof program?

xnor

Yes, but only fool-proof against huge numbers

Erik the Outgolfer

hm... sounds a bit challenging...

because you want to check that before you eval

xnor

exactly

i think i could do it with some checks on the exponent and base, but that seems like a hacky solution

Erik the Outgolfer