The Nineteenth Byte

ATaco

00:25

Gug, we got our redesign, never thought I'd see the day.

s/Gug/huh

New Main Posts

0

Q: Obfuscate the "Hello, world!" program

Create a "Hello, world!" program which is heavily obfuscated. You can use whichever language you want, so long as it has a common "Hello, world!" program which is clearly identifiable as a "Hello, world!" program (e.g., you can't use Brainfuck.) To qualify, your answer must: Contain the non-ob...

Anonymous

CMC: given a, b, c, and x, output the value in the sequence {a+c*i | i >= 0 and a+c*i < b} that is closest to x. If two values are equally close, output either or both.

ATaco

I'm... not particularly sure what I should be doing for that.

Anonymous

Find the value in numpy.arange(a,b,c) that is closest to x

Anonymous

The more I tried to make it clear, the worse it got lol

ATaco

00:36

I think the bigger problem is my maths skills

Anonymous

numpy.arange is just Python's range except it works with floats

ATaco

So is it for (var i=a; i <= b; i += c)?

Anonymous

< b but yeah

ATaco

01:17

Funky, 51 bytes. (a,b,c,x)=>ifx<a a elseifx>b-c b-c elsex/c//1*c+a%c

By no means optimal, but should be accurate

Dennis

01:46

@Mego Fixed.

Dennis

01:57

Fancy new chat footer is fancy.

Anonymous

02:26

@Dennis Danke

Conor O'Brien

02:41

I can get used to the green :D

gparyani

Quick caching check (homepage onebox):

Bugged.

primo

03:41

@Anush i've updated my answer, although I'd still like to reduce it by a factor of log(n)

dkudriavtsev

I like the new chat color

but I don't like the lack of privileges

I'm Mendeleev btw if anyone remembers me

New Sandboxed Posts

04:15

0

A: Sandbox for Proposed Challenges

Cumbersome IO format cops-and-robbers The cops' task is to write a program in language A to solve (task about integer lists 1) and a program in language B to solve (task about integer lists 2). The second program must be able to use the output of the first program. Others could golf your progra...

New Main Posts

04:53

0

Q: Print the phrase "And she said, 'But that's his.'" using only the alphabet

Print the phrase "And she said, 'But that's his.'" using only the alphabet. No punctuation or non-alphabetic characters whatsoever. You can use whatever programming language you want. Spaces are allowed. Shortest program wins.

code-golf restricted-source

Dennis

Vim/Neovim Arbitrary Code Execution via Modelines

Reminds me of the Office macro malware. (Is that still a thing?)

Downgoat

06:16

looks like both logos now show :P so if you couldn't decide which one you like....

primo

06:36

@Downgoat are you sure you don't have a userscript active?

Andras Deak

06:46

@Catija yeah, thanks. I was wondering about an alleged fart notification :)

bb94

07:01

I'm figuring out how to do the print the phase with only the alphabet challenge in Perl 6

I know I can use ord and chr, but the problem is how to get the appropriate ASCII codes

Adám

@bb94 Who says it is possible?

bb94

Who says it isn't?

I doubt it, though, now that I think about it, since you'd need semicolons to separate statements

Hmm, maybe you can use and instead

yep, it works

Adám

@bb94 Maybe some built-in constants you can use?

bb94

Yes, there are pi, e, and tau, plus some subs such as floor or exp

Seems you can use the chars method too

Shieru Asakoto

Wow the layout of the chatroom changed too

bb94

07:10

flip is also another option

https://tio.run/##K0gtyjH7/7@gKDOvRCE5owiIE4uKFQoyFSoUUv//BwA
Managed to print the quotation mark

bb94

07:30

you can also use chop to reduce string length by one so you can get the right number of chars for chars

feersum

07:44

Why "coding challenges" in the site name?

It's not really meaningful enough to describe anything.

But it still can be attractive to people having "challenges" with homework.

Neil

09:18

@Veskah Pea Pea See Gee

Adám

@Neil Pee Pee Sea Ghee

noɥʇʎԀʎzɐɹƆ

09:44

the Wolfram language has a builtin for Cheesecake

primo

is it a unit of measurement?

perhaps something like kJ/g

Adám

afaict, the only thing it knows about cheesecake is nutritional values for a handful of varieties.

Fatalize

I have to say that the header looks much better with more varied code and that fade out effect

Adám

Am I the only one who thinks the fade is upside down (i.e. the green should become more pronounced towards the bottom)?

Fatalize

I still think it's lazy as I said on meta, but I appreciate those new changes

@Adám I think it would look weird cause we read top to bottom

Adám

09:50

@Fatalize So? It'd fade in, and merge nicer into the SE bar.

noɥʇʎԀʎzɐɹƆ

@Adám and the mass :P

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Print the total length of all "quoted" characters code.golf Rules In this challenge, I'm going to redefine the definition of "quotes" a bit. Quotation marks (AKA quotes) are any identical characters used in pairs in various writing systems to set off direct speech, a quotation, or a phrase. ...

0

A: Sandbox for Proposed Challenges

Gitify a graph code-golfgraph Given a undirected connected graph, create a git repository with a commit graph that is isomorphic to the input graph. META: This is just a rough idea: I first should think about what kind of graphs can actually be represented in a git repository. (the input for...

noɥʇʎԀʎzɐɹƆ

Hmm, what are the fundamental forms of computation? I can think of the lambda calculus (Wolfram), the datastream (Unix pipes), and the RAM machine (C) off the top of my head.

the darwinist (genetic algorithm) could be one

Adám

@noɥʇʎԀʎzɐɹƆ How about analog computation?

noɥʇʎԀʎzɐɹƆ

@Adám there is no one discrete kind of analog computation

Adám

09:56

@noɥʇʎԀʎzɐɹƆ And there are for datastream and RAM?

noɥʇʎԀʎzɐɹƆ

but I guess, if we're sorting by data transfer type, analog could be realtime

@Adám RAM is elucidated by C and data stream by unix pipes, what elucidates analog computation?

Adám

Neuro-connections.

noɥʇʎԀʎzɐɹƆ

I don't see any common thread linking the flight computer, the neural net, and the human brain.

neural nets don't work the same way the brain does

CUDA or FPGA could be responsible for massively parallel floating point

noɥʇʎԀʎzɐɹƆ

10:09

@Dennis would GraalPython be eligible for addition to TiO? (it's an implementation of Python on the Graal JVM, letting it interface with other languages easily)

on the other hand, I can't think of a reason why one would want to use graalpython for code golf

Also perhaps Wolfram Language (Natural Language) should be added; wolfram alpha queries can be wrapped as a Wolfram language query

feersum

What does Wolfram have to do with lambda calculus?

Seems more Lispy to me.

noɥʇʎԀʎzɐɹƆ

x => x

UndefinedVariable[NonexistentAttributeBlah] => UndefinedVariable[NonexistentAttributeBlah]

but I agree, what is the difference between a lisp and Wolfram?

Erik the Outgolfer

10:34

@Adám not sure we have enough code for that... :D (also, Lisa is a human too... and the design would literally look like the 90s and possibly be unbearable)

also, we should really unlock, feature, unfeature and then lock this...

Adám

@EriktheOutgolfer I don't understand. It'd take exactly the same amount of text as now.

Erik the Outgolfer

@Adám hm, it looks like hiding left nav doesn't show a background anymore

feersum

@ArBo I thought I had already deleted that bounty (the date restriction is too old now). But since you asked, I wrote a shorter answer using regex.

Adám

@EriktheOutgolfer What‽

Erik the Outgolfer

10:49

@Adám if I remember correctly, hiding the left navigation used to show the theme's background at the sides

looks like that's not the case anymore though

so instead I'm going to say that reversing the fading could make it look like there's an end :P

Adám

@EriktheOutgolfer Sure, the end of the top bar.

Erik the Outgolfer

@Adám I meant an end to code golf, but eh, to each their own :D

feersum

It's worse, you get terminated almost at the beginning.

ArBo

11:06

@feersum props to you, pretty sure I can't beat that :P

Adám

Is it just me or does the source for our new meta favicon have a gold medal, but the rendering on the browser tab is silver?

Erik the Outgolfer

yep, the meta favicon is always greyscale

Adám

@EriktheOutgolfer How does that work? The html source just links to that file, and afaik, you can use filters (CSS) on the favicon.

<link rel="shortcut icon" href="https://cdn.sstatic.net/Sites/codegolfmeta/img/favicon.ico?v=e8a524ccc54e">

feersum

Augh how do I make an inline code formatted section that begins with a `

Adám

@feersum In chat or in a post?

feersum

11:13

Post

Adám

@feersum Use <code>…</code>

feersum

@Adám Doesn't work.

(Would have been a disappointly non-arcane solution anyway)

Adám

@feersum Alternatively, use backtick,backtick,space,backtick,more text,backtick,backtick.

dzaima

@feersum works for me

feersum

@dzaima I'm guessing you used only one backtick and not two.

dzaima

11:16

@feersum ah yeah, then things get weird

Adám

@feersum Wait, do you need two leading backticks?

Fatalize

I'm lost in my Firefox tabs, I don't recognize the PPCG tabs anymore

dzaima

it looks it's more like `h`i that causes problems

feersum

@Adám Nope, double backticks and space worked great, thanks.

Adám

@feersum For full control, you can use <code>&grave;…</code>

dzaima

11:22

is there any case when enough backticks aren't good enough?

Adám

@dzaima Dunno. It seems that the number of outer, space-delimited backticks just has to be different from all backtick-runs in the code. E.g. ` ```text`` ` works fine, i.e. renders as ```text``

Shaggy

@Adám You can include multiple images of differing in a single favicon - the one you see when you visit the link directly is the 32*32 one but the one used in your browser's tabs is the 16*16 one.

Adám

@Shaggy Ah, you're right.

dzaima

11:40

CMC: given a string, backtick escape it the shortest way possible in a post. examples: "a" → "`a`", "`a`" → "`` `a` ``", "a`b`c" → "``a`b`c``", "` `` ````z" → "``` ` `` ````z```"

Adám

@dzaima Wouldn't "`a`" → "`\`a\``" be shorter?

dzaima

@Adám doesn't show up correctly for me

Adám

@dzaima Oh, right, "in a post", not in chat.

@dzaima That's actually a decent main challenge, methinks.

dzaima

hm yeah

Luis Mendo

Thoughts / votes?

1

Q: Change color of visited links

With the new site design, unvisited links are green, whereas visited links are black: The black color for visited links makes them look almost as if there is no link. There's still the underline, but the main visual hint of a link, which is the color, is gone. In addition, aesthetically the ...

discussion feature-request

@KevinCruijssen Thanks! I moved it there

Kevin Cruijssen

12:07

@LuisMendo I saw it indeed. Already upvoted your answer. :)

J. Sallé

12:20

@LuisMendo that links to a 404. I wanna upvote it >.>

Adám

2

A: Congratulations! Your site design is now live!

With the new site design, unvisited links are green, whereas visited links are very dark green, almost black: The almost black color for visited links makes them look as if there is no link. There's still the underline, but the main visual hint of a link, which is the color, is gone. In addi...

Geobits

@flawr Well holy shit

J. Sallé

@Adám thanks

Geobits

They changed the name the wrong way :(

Adám

@Geobits How so?

John Dvorak

12:25

Congratulations on the new design

Geobits

@Adám Eh, I just don't like it. If you're going to change it, making it less clunky would have been a good idea. It's just as awkward now, just different for different's sake as far as I can tell.

Veskah

Now it's different and official though

Adám

@Geobits I think "Code Golf & competitive programming" would have been better. You?

competitive programming also covers [tips]

Geobits

@Veskah Yeah. But why? lol

@Adám I'd rather have kept it the same, or significantly shortened it, personally. Not that my opinion probably matters much any more :)

Although it does appear I technically still own this room :D

Veskah

@Geobits That's not important :^)

Code Golf & Code Bowling & Code Popularity Contests

CGCBCPC

AdmBorkBork

12:40

@Geobits Aww, don't say that. Your opinion matters now just as much as it did previously.

Geobits

Just to be clear, that's not at all, right?

AdmBorkBork

I can neither confirm nor deny that statement. >.>

Geobits

13:04

My opinion of that statement is conflicted.

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

I'm not able to find a challenge which will return as an integer how many days until Christmas based on an input like DDDD-MM-YY. So... How many days until Christmas? Work out the number of full days until Christmas based on today's date based on the Western Christianity date source. Write a p...

flawr

@Geobits please no cursing, we say sacred manure

@Geobits yes I agree :/

@Geobits how's life?

how are the minibits?

@LuisMendo updooted

Geobits

13:20

Minibits is doing great. Microbits is almost done forming :)

You?

Skidsdev

13:33

@Geobits what's next, nanobits? ;)

Veskah

Picobits soon, Stalker

Geobits

I may just stop here :)

Dennis

14:07

@Geobits The new name is officially Code Golf

Dennis

14:25

@noɥʇʎԀʎzɐɹƆ In any case GraalVM itself looks like an interesting addition. The polyglot launcher, e.g., seems handy.

@noɥʇʎԀʎzɐɹƆ I'm not sure how I would do that. I doubt the Wolfram|Alpha implementation is freely available.

Geobits

14:39

@Dennis In that case, the site's design (especially the title banner) is confusing :P

Dennis

The banner is the only place where the subtitle appears, but yeah, it doesn't seem to have the desired effect...

AdmBorkBork

CGCCSE. What's so confusing about that? ;-)

Geobits

Well, I also saw the recent thread about the name change and the top line (which agrees with the most upvoted answer) is conflicting as well: This site is now "Code Golf & Coding Challenges"

I'm just gonna start calling it Code Sport instead :P

CS is a perfectly distinct acronym that couldn't possibly cause any confusion.

5

AdmBorkBork

Code Golf, Coding Challenges, and a partridge in a pear tree.

2

Veskah

@Geobits Code Sport, the most Dangerous Game

flawr

15:06

@Geobits oh microbits is still in beta?

a spaghetto

green

flawr

@Geobits I'm fine. Not involved in nanophysics yet:)

@aspaghetto blue

John Dvorak

Compressed Code Creation Competition, or C4 in short

Geobits

@flawr Launch date is set for August, according to the latest press release.

flawr

@Geobits you know what it is like, right before the deadline they will postpone it again

Geobits

15:16

Hopefully not. I've been anticipating the release for some time now.

flawr

well I hope for the best:)

how old is minibits now?

is the python phase over?

AdmBorkBork

Your hat is green.

flawr

yeah the darn design is messing up everything

Geobits

@flawr 12 now, and nope lol

gparyani

15:47

Let me try again; was it just caching the last time?

Nope, still bugged

John Dvorak

@gparyani shows me "code gold & coding challenges" in white

Luis Mendo

@flawr Thank yoo!

gparyani

@JohnDvorak Probably browser caching; mine shows like this:

@JohnDvorak Out of curiosity, does this message show an old logo?

John Dvorak

shouldiblamecaching.com

It shows me the new logo as well

Adám

@JohnDvorak That site is notoriously unreliable!

gparyani

15:51

@JohnDvorak Screenshot please?

John Dvorak

Hold on; booting GIMP

J. Sallé

@JohnDvorak had to highlight this message to see the brackets and the site's name. I thought it was just the medal for a while there.

@Adám well they DO say the advice may be invalid due to caching

John Dvorak

Adám

@J.Sallé Sure, but that clause may since have changed.

John Dvorak

White on yellow isn't quite readable, mind you...

Dennis

15:57

@gparyani Are you using any user scripts or extensions?

gparyani

@Dennis SOUP, but I tried disabling that to no avail

Tried clearing my browser cache, using a different browser, clearing my system's temporary files, but nothing worked.

John Dvorak

does CTRL+F5 help?

Dennis

Might be a CDN issue then.

John Dvorak

might be a proxy-side cache, too. By the ISP, perhaps?

gparyani

Could be a CDN caching issue, where it's serving me an older one (i.e. its cache hasn't updated yet)

dzaima

16:00

@gparyani it's definitely caching somewhere - the logo shows the old one for me, but adding a single ? gives the correct image

Adám

@gparyani FWIW, I also see that as Programming Puzzles & Code Golf in blue.

@dzaima Ah, same here.

J. Sallé

@JohnDvorak this is what I meant by highlight

gparyani

Ah, yes, no one loads it with a question mark, so the CDN went and loaded it live

ThePlasmaRailgun

16:50

I made a really obnoxious Hello World: gist.github.com/ThePlasmaRailgun/…

See if you can figure out the method it uses

I'll be honest, if you're mathematically inclined and lucky it might be pretty obvious

New Main Posts

0

Q: Find all divisors of n divisible by 2

Steps to solve this problem: 1) If number is odd, return 0 as there are no divisors divisible by 2. 2) If number is even, find all numbers from 1 to n/2 that are divisible by 2 To do step two 3) Check if all numbers from 1 to sqrt(n/2) is divisible by n/2, if it is divisible by 2, increase the...

number-theory

J. Sallé

^ Can't VTC anymore :c

AdmBorkBork

17:10

Yeah, the rep levels got updated as part of the site design.

J. Sallé

Yeah yeah, I'm aware. That just means I'll need to post more answers, I guess

AdmBorkBork

Post all the answers!

Adám

17:25

@AdmBorkBork Congrats on being the first to use the new name against an off-topic newcomer. Unfortunately, the new name and subtitle didn't scare them.

AdmBorkBork

Hehe, thanks, I think.

ThePlasmaRailgun

Nice one

ThePlasmaRailgun

17:43

What do you guys think of my abomination of a Hello World program?

Veskah

It sure is

ThePlasmaRailgun

HAHA

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Matchmaker, Matchmaker, make me a match I accidentally removed the base version of R on my computer, so I need to re-create the functionality of the functions. I'm prioritizing the ones I use most in golfing, of course. My first challenge is to implement R's match function. Input: x, a possib...

New Main Posts

18:12

0

Q: Radiation hardened+counting quine

Create a quine. The catch: Your quine must be radiation-hardened, to the highest degree. That is to say, removing N (defined later) characters from its source must still leave it a quine. If you remove N characters, the quine should decide not to be a quine and print itself, plus N copies of the ...

code-challenge quine radiation-hardening

DJMcMayhem

18:51

@Geobits Clive Staples?

Beta Decay

19:04

I can't believe it actually happened, we got a site design... What are we going to moan about now?

AdmBorkBork

The colors or the acronym. Take your pick and stake your claim.

dzaima

@BetaDecay well there's still almost every item here

flawr

19:27

@BetaDecay well isn't it obvious? we complain about the design itself!

flawr

19:59

@BetaDecay How are you btw? Haven't seen you here in a while

AdmBorkBork

Our new design is getting all the old timers out of the woodwork.

J. Sallé

It's probably the smell of freshly released graphical bugs that has roused them

flawr

...like the undead from their graves

AdmBorkBork

Those are two very different smells ...

flawr

1.) you misunderstood something 2.) how the heck do you know?

Adám

20:13

Don't you all worry, all the issues with the new design will be taken care of in the next 6-8 weeks.

AdmBorkBork

@flawr No reason. me.me/i/…

flawr

hehe

Well I have to admit, I have no idea about graphical bugs, but I know what skulls smell like. But I cannot have you ask why.

J. Sallé

Human skulls?

flawr

Certainly not snake skulls

AdmBorkBork

See, that's an instance where punctuation is important. "Certainly not! Snake skulls." vs "Certainly not snake skulls!"

Beta Decay

20:21

@flawr I'm good, coming to the end of my first year at uni

flawr

@AdmBorkBork you're doing physics, right?

Beta Decay

Yeah, Physics with Astronomy

flawr

@AdmBorkBork the lack of punctuation may or may not have been intentional

AdmBorkBork

I haven't been in uni for 14 years... I think you're having trouble with pings today.

And by "today" I mean "in general."

flawr

@BetaDecay ah right:)

ThePlasmaRailgun

20:27

Anyone willing to help with some C golfing?

Beta Decay

It's been a while since I've used anything other than Python, sorry haha

flawr

@ThePlasmaRailgun can you translate it to Haskell? then I migh thelp

ThePlasmaRailgun

I don't know haskell at all, sorry

Adám

@ThePlasmaRailgun Dyalog APL is mostly written in C…

ThePlasmaRailgun

Hmmmm

That's cool

flawr

20:37

@ThePlasmaRailgun the this would be a good opportunity to learn it =P

ThePlasmaRailgun

I'm not interested in learning a new language atm

Adám

@ThePlasmaRailgun ditto ^

ThePlasmaRailgun

But I definitely want to learn APL at some point

Adám

@ThePlasmaRailgun We're ready whenever you are. I promise it won't feel like learning "yet another programming language".

flawr

@Adám Do you know J?

Adám

20:41

@flawr A little. I post simple J answers here and there.

flawr

How close is it actually to APL?

Adám

@flawr The simplest expressions can be transliterated character-by-character, some APL primitives are two-char "symbols" in J. The array model is almost the same. The general parsing rules are basically identical.

@flawr See e.g. here that APL's +/ (BHCodes ∊ Selected) / BHAmounts is +/ (BHCodes e. Selected) # BHAmounts in J.

flawr

Ah I see. I was asking because I just recently started going through an APL tutorial, but I never continued since then because I was intimidated by the use of all those symbols.

In the meantime I learned that J is a thing, but haven't looked into it any deeper.

J. Sallé

Evil squiggles strike again ⍨

Adám

@flawr Interesting. Which tutorial, if I may ask? Also, what was it about the symbols that intimidated you?

Andras Deak

20:49

he is scared of abstract formulae

;)

flawr

@Adám I think I found it on the dyalog website, let me check

Adám

@flawr Uh oh, that one.

Andras Deak

wow, this new style is getting crazy, even flawr's hat has changed colour

flawr

@AndrasDeak yeah everything non-ascii is scärÿ

Adám

@flawr Are you also afraid of traditional mathematics?

flawr

20:51

@Adám this one

Andras Deak

does that also imply a transition from Santa Claus to St. Patrick?

@flawr I didn't ask anything :P

Adám

@flawr That ping was for me.

flawr

6 hours ago, by flawr

yeah the darn design is messing up everything

Adám

@flawr Yeah, for some reason, some people like it. *shudders*

flawr

@AndrasDeak be grateful that you still got an answer, not everyone gets this opportunity

Andras Deak

20:52

:')

Adám

@AndrasDeak Yeah, let's teach you APL!

flawr

@Adám I have to say I didn't particularly like it, but I figured it is on the dyalog website, it must be good.

Andras Deak

@Adám was I that bad?

flawr

@AndrasDeak I only know St. Andras

@Adám ... the more I learn about it:P

@Adám can you recommend another one?

Adám

@flawr No, we just keep all kinds of unmaintained stuff.

J. Sallé

20:55

@flawr @Adám holy heck I never knew there was an apl tutorial written in comic sans. What a crime.

Adám

@flawr Depends on which format you prefer. The TryAPL tutorials are pretty good. I also gave a bunch of lessons in chat, geared for ~~PPCGers~~ CGCCers.

@J.Sallé Don't look at it for too long, or you may never recover.

J. Sallé

Yeah I already closed the page. That was a terrifying experience.

flawr

@Adám oh that is nice, thanks a lot!

Adám

@flawr There's also the amazing Mastering Dyalog APL book if you like to read. It has exercises too.

J. Sallé

Personally, I recommend going through the chat lessons and referring to Mastering Dyalog APL when you have to

Adám

20:59

@flawr But really, the right way (imho) is to take a stroll in the APL Orchard for a personalised introduction, and then go off exploring with the interpreter. APL is supposed to be interactive (it was from day 1).

ThePlasmaRailgun

Damn, did you guys see the programming language cops and robbers one?

184

Q: The Programming Language Quiz

Congratulations to Dennis who won both the cops' and the robbers' challenge! Calvin's Hobbies has already delivered on his promise and wrote this challenge for Dennis for winning the robbers' challenge. Notice: This challenge is closed for further cop answers as of 2015-09-01 02:00:00 U...

code-golf hello-world obfuscation cops-and-robbers

There's a programming language that would be bullshit in that challenge:

esolangs.org/wiki/Incident

flawr

@Adám I appreciate that, I can't say when but at some point I'll have to take the time to get started:)

Adám

@flawr Whenever you're ready :-)

flawr

@Adám It's amazing to see how much work you put into that!!

Adám

> There are three things a man must do before his life is done: Write two lines in APL and make the buggers run — Stan Kelly-Bootle

@flawr Thanks. It was fun too. I really miss it, but I ended up teaching pretty much everything I know that could fit into the chat lesson format. (Although I unintentionally skipped one primitive.)

ThePlasmaRailgun

21:05

From the incident language wiki article:

Incident is a language created by User:ais523 for the CALESYTA 2016 contest. The goals of the language were to make an interesting puzzle for programmers (trying to figure out how to write anything at all in the language is decidedly nontrivial, although once you know the tricks the language is viably possible to write by hand); and to create a language which would allow programs to obey almost arbitrary restrictions on what can appear in the source (e.g. bans on certain characters, polyglotting with some other language, valid as an image / executab…

That would be a whole different level in any sort of challenge with source-restrictions

Here's a cat program


    |\ /|
    /"^"\
    (0 0)
    \_*_/_________
      (          _^^,
      (_________) ( )
cat    |||   |||   "
       ||^   ||^
       ^^    ^^

Ah, thanks

New Main Posts

21:30

-1

Q: Very Evil Integers

An evil mad scientist has managed, through extensive experimentation, to devise a machine that can twist the very bits of an integer around! He calls this the "weave" operation, and along with the ability to increase and decrease his integers, he would like to know the fastest way to get from one...

number code-challenge optimized-output

noɥʇʎԀʎzɐɹƆ

21:41

@Dennis graalvm has really high performance interlanguage interop; When I modified a JS class to become a C struct, it reduced CPU usage. (GraalVM used 3x more memory than V8 on my microbenchmark though.)

In general, a "self-optimizing AST" that comes with a free JIT is a cool idea. Truffle let's you specify the language in terms of an AST, Graal gives you the JIT for free.

@Dennis https://tio.run/##y00syUjNTSzJTE78/z88PyetKDHXMacgIzFaqSAzuaS0KFUhP00hUaEcKKUU@/8/AA errors

dzaima

@noɥʇʎԀʎzɐɹƆ TIO doesn't give code access to internet

noɥʇʎԀʎzɐɹƆ

@dzaima dennis could whitelist wolframalpha api for the wolframalpha language type

Dennis

@noɥʇʎԀʎzɐɹƆ Once the API I'm working on goes live, user code will be confined to a private networking namespace. No internet access whatsoever.

Adám

@Dennis Ooh, so we'll be able to run a local server?

Dennis

Networking inside a sandbox is the goal, yes.

Adám

21:54

@Dennis What else do you have in the works? Graphical results? Interactivity? 🤤︎

Time it Online?

Dennis

I'm currently just working on the backend, but it will support interactivity. Frontend support will come later.

Time It Online is really difficult with shared resources. My Hello World tests take between 330 and 530 seconds, on an otherwise idle droplet.

Adám

@Dennis Cool, oh, and if you have not noticed (I guess you're getting emails from Dyalog), the competition's answer checking mechanism — powered by TIO — is running very well.

Dennis

Glad to hear that. :)

noɥʇʎԀʎzɐɹƆ

@Dennis have you looked at autoscaling? Perhaps Upcloud or ExtraVM or BuyVM would suit you.

BuyVM and ExtraVM have high-performance servers. BuyVM has excellent burst capacity.

code challenge idea: A turing complete programming language that supports IO, where for every possible State Machine the programming language can express, there is exactly one source text string for.

Dennis

Burst capacity is the problem. I need constant resources for reliable timings.

noɥʇʎԀʎzɐɹƆ

22:08

BuyVM gives you constant resources

Dennis

You just said it bursts.

noɥʇʎԀʎzɐɹƆ

When you use max out cpu for too long and another customer on the same node complains, they dock down your performance.

Hmmm

Have you seen Scaleway?

Dennis

I probably need a dedicated server to do this well.

@noɥʇʎԀʎzɐɹƆ They look like a cheapo VM reseller.

I might be able to time stuff on a local machine. It might take a while to be able to time something, but that would be true anyway. For timing, only one request could be run at once per machine.

dkudriavtsev

The new design does not have automatic byte counting :/

FrownyFrog

that was a userscript thing

noɥʇʎԀʎzɐɹƆ

22:39

@Dennis Scaleway has their own datacenter, they're part of Online.NET. Check out the Baremetal offerings.

Kimsufi has cheap, dedicated servers.

it's part of ovh

Dennis

They're ancient though, so no modern CPU instructions.

Adám

Do you guys think it is intentional that meta and main have slightly different GoL boards? Wouldn't it be cool if meta was one generation before main?

Andras Deak

22:53

seems accidental enough

Stephen

@SriotchilismO'Zaic Sorry for the random reply, couldn't ping you directly, but thanks for making this challenge, I finally used that language for something lol

Adám

Does responding far back in time actually ping?

Andras Deak

directed replies do

Stephen

yeah that's why I found his last chat and replied to it

Andras Deak

non-directed replies can only be directed at chat.stackexchange.com/rooms/pingable/240

Riker

23:06

is it just me or does our new favicon look vaguely reminiscent of the python logo when small?

Andras Deak

for what it's worth I don't see it :)

Riker

I mean it's not but it looks similar when small at first glance

like on the tab name

Andras Deak

your icon is much less ugly than the python logo, even when tiny

Riker

lol

Luis Mendo

23:35

@Riker I also thought that

@AndrasDeak and that :-D

Andras Deak

:D

Luis Mendo

@Adám I don't think it's intentional. Meta has the old version, before they introduced the Glider and the R-Pentomino. They probably just forgot to update the GoL board in meta

Andras Deak

Hmm? They are there but shifted by two rows or so?

Luis Mendo

Oh, sorry. I'm totally wrong

Too late here :-)

Andras Deak

Hehe, same ;) Good night!

Luis Mendo

23:40

Good night!

Adám

CMC: Find a GoL world that will evolve to the main or meta footer in the next generation.

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