The Nineteenth Byte

ASCII-only

03:00

@Maltysen nvm public domain one

inspect element -> play button -> nearest .mp3 link

Anonymous

@ASCII-only Or just wget

Maltysen

ahh

Riker

TIL

MHTML

MHTML, short for MIME Encapsulation of Aggregate HTML Documents, is a web page archive format used to combine in a single document the HTML code and its companion resources that are otherwise represented by external links (such as images, Flash animations, Java applets, and audio files). The content of an MHTML file is encoded as if it were an HTML e-mail message, using the MIME type multipart/related. The first part of the file is an e-mail header. The second part is normally encoded HTML. Subsequent parts are additional resources identified by their original URLs and encoded in base64. This format...

tl;dr; single file webpage

ASCII-only

@Riker this is what happens when you save a page with most browsers

well it's an option at least

Riker

@ASCII-only not enabled by default in chrome

apparently

Pavel

03:10

Destructible Lemon

do we have a ccg koth thing?

Riker

@Pavel imgur blocked

use stack.imgur?

or nvm, I got it

@Pavel is that a mhtml?

Pavel

Think so

Riker

not for me

ASCII-only

@Riker ~~yes~~ maybe not

ATaco

03:11

Neat, I managed to fit Funky on a webpage.

ASCII-only

@ATaco it's called TIO

ATaco

TIO is serverside, this is clientside.

Destructible Lemon

should i make a ccg style koth?

Riker

@ASCII-only I just get a html + some files

@DestructibleLemon ccg?

en.wikipedia.org/wiki/Collectible_card_game?

ASCII-only

@Riker yeah nvm it's a flag

Riker

03:14

ya

ASCII-only

i just have it on all the time :P

Riker

lol

ASCII-only

@Riker yes

Destructible Lemon

@Riker sort of

Riker

I don't mess with my chrome

@DestructibleLemon if you can do it well then sure

hard to do tho?

Destructible Lemon

03:14

c for customizable really

ASCII-only

<- has all experimental js features enabled

Riker

lol

Pavel

Why would you not enable an expermintal js feature

Destructible Lemon

@Riker well i mean it shouldn't have any physics or anything so it should be pretty quick

ASCII-only

@Pavel i know right

Pavel

03:17

Scratch that. s/js//

ASCII-only

well for production you wouldn't want it enabled

but for all other purposes why not right

Pavel

D:

Riker

@Pavel that's what they said about --disable-anti-segfault-mechanisms

3

MD XF

How, with 6k views, has this not gotten closed for not having an objective winning criterion?

Pavel

@MDXF By having an objective winning criterion, methinks.

MD XF

03:20

Where?

Pavel

It's tagged code-golf

Riker

and atomic code golf

MD XF

And atomic-code-golf

Riker

so ^^^ shoudn't be there?

MD XF

which is an entirely different thing

Riker

03:21

@MDXF if he was new or just inexperienced at the time of posting

MD XF

Regardless, none of the answers have byte counts nor step counts. The question doesn't state it and it is unclear anyway

Riker

@MDXF not at all, it's just a subset

HyperNeutrino

It's tagged with two different conflicting winning criteria and none of the submissions seem to cater to either.

Riker

@MDXF didn't use to be policy

Pavel

It's an old question.¯\_(ツ)_/¯

Riker

03:21

@HyperNeutrino not conflicting really, atomic code golf is really just a subset

MD XF

Regardless, shouldn't it be closed? The mods have closed/locked/deleted old stuff before

HyperNeutrino

Well, that's true.

MD XF

@Riker code-golf is bytes, atomic-code-golf disregards bytes and only cares about steps

Riker

code-golf can be imagined as "shortest code to solve a task"

atomic code golf is the same but not with bytes

HyperNeutrino

I think it depends on how you define the atomicness; if you define it correctly I think code-golf is just more specific atomic-code-golf

Riker

03:23

code-golf is just generally bytes, and is so for the purposes of this wiki

@HyperNeutrino yes

MD XF

@HyperNeutrino I agree

Riker

@HyperNeutrino also, yes, the challenge doens't explicitly specific atom definitions, but I think "operations" works here

not sure though

I wouldn't VTRO, but not VTCing

HyperNeutrino

yeah I'm going with that too

MD XF

Someone pls pay attention to my new cool thing

Pavel

@MDXF 0/10 no docs

#include <string.h>
#include "string.h"

2

ಠ_ಠ

ATaco

03:48

Have a client-based Funky interpreter.

ATaco

04:19

Bugs: Infinite loops crash the browser, Stores global variables between executions.

Destructible Lemon

04:33

should my ccg thingy have a health metre as the main win condition?

betseg

07:28

Alphabet -> pqrs

Roman republic -> spqr

> #define isnumliteral(s) (str_only_contains(s,"012345678L.") && isdigit(s[0]))

9?

Neil

07:59

@ATaco you do know that's already happened to you right?

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Character Shifted Quine Write a quine that outputs itself shifted around by one character, which is still a valid quine. For example. if your code is: i%$;P# it would output: %$;P#i which in turn would output: $;P#i% and so on: ;P#i%$ P#i%$; #i%$;P Until it outputs the original form:...

Neil

10:21

@ASCII-only You can sleep soundly, Charcoal is outgolfing Jelly again... for now...

Conor O'Brien

10:57

0

A: A Fragile Quine

ES8, 2B(!!) "" logs "". Yes, two quotation marks. Removing either yields a SyntaxError.

Do we have a consensus on quines, yet? I've forgotten

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Calculate the damage I code-golf A little bit of background I was working on a program to store data and process calculations for a DnD campaign I'm running. Whilst working on this program I had to write a method to calcualte the damage from a weapon, given the rolls the player got and it got ...

caird coinheringaahing

11:19

@ConorO'Brien Yeah, they have to consist of an encoder and a decoder IIRC, so that one's invalid

dzaima

trying to do uniform random ordering in SOGL's gonna be hard for this..

ASCII-only

12:26

@Neil hmm i need a character for filter

Conor O'Brien

is phi available?

HyperNeutrino

@ASCII-only maybe the unicode block character that looks like a sieve of some sort? like the characters that look like a whole block

ASCII-only

@ConorO'Brien lowercase? no

@HyperNeutrino :| they don't look like sieves to me

they look more like meshes

HyperNeutrino

¯\_(ツ)_/¯ idk someone used them once for filter

@ASCII-only works too :P

Neil

@ASCII-only ≟

hmm, that looked better in character map

or one of ¦ǁ‖↝⇝∥≈≂≻ perhaps

Mr. Xcoder

12:33

⇝ seems suited for filtering

user202729

Anyone know what does the (,) and += means in the part Gamma_0(p) += (Gamma_0(p), (... after the part define Gamma_0(N) in encyclopediaofmath.org/index.php/Thompson-McKay_series ?

(working for next oeis)

HyperNeutrino

I'm guessing that (x, y) is just an ordered pair.

user202729

What about += ?

HyperNeutrino

Good question. I'm trying to figure that out.

Eric Tressler

let me look

ASCII-only

12:39

@Neil first few are separator and mirror already (or they look to similar)

Eric Tressler

they are defining X+ (notation)

Conor O'Brien

@ASCII-only uppercase?

Neil

good point, I'd forgotten what they were

Eric Tressler

@user202729 You can see later that they make reference to $\gamma_0(p)+$

@user202729 and that isn't an ordered pair, I think those are angle brackets. That would be the group generated by those two objects

user202729

So the (,) is group with element added?

Probably, the font resolution is too low.

Eric Tressler

12:42

You can see in the definition of $\gamma_0(p)$ that that matrix is not an element of $\gamma_0(p)$; they're extending $\gamma_0(p)$ to $\gamma_0(p)+$ by adding that matrix and taking the closure (under the group operation).

user202729

Ok thanks. I was confused by += in programming.

HyperNeutrino

ohhh that makes sense :P yeah I was confused by the programming meaning of += as well

Eric Tressler

no problem

ATaco

Latex makes mobile users sad

J. Salle

God, it's way too early to be mathing so hard, guys

HyperNeutrino

12:45

@J.Salle "early" is relative

2

user202729

If they use superscript + it would makes more sense. Anyway the last answer on oeis was also posted by mine so I can't post the next one.

HyperNeutrino

oh yeah that too..rip

J. Salle

@HyperNeutrino indeed it is

user202729

@HyperNeutrino So you post the next one.

HyperNeutrino

@user202729 I'll try to get a solution. You've seen the comment on your post with the mathematica code already, right?

oh yeah ofc

you even replied to it, duh. whoops :P

user202729

12:47

Although there are formula for generating function, it is not nice to blindly implement it without understanding what is the sequence.

HyperNeutrino

Yes. I typically don't like taking formulas off of OEIS because then I don't really get what's going on.

user202729

Looking again at the formula, TeX format the + to be nearer to the ) and further to the = .

HyperNeutrino

Hm interesting.

Mr. Xcoder

@HyperNeutrino Have you seen my comment here?

HyperNeutrino

Oh apparently I accidentally dismissed the notification. No just saw it, thanks.

fixed

Mr. Xcoder

12:57

@HyperNeutrino I think adding a +3 after the x should fix 8t BTW, but that doesn't mean I can prove it.

HyperNeutrino

It only needs to be +1

wait no

Mr. Xcoder

@HyperNeutrino Fails for 1.

And 2.

HyperNeutrino

As long as it works for 1 and 2 it should work for the remainder (which didn't fail originally anyway)

Mr. Xcoder

Actually +2 suffices I think.

HyperNeutrino

well +3 works too :P too lazy to change it again

Mr. Xcoder

12:59

Any idea how to prove it is (in?/-)valid?

HyperNeutrino

it works for 1 and 2 and for any other number the largest base you'll need is x-1 which will give a positive integer in the second-from-the-right digit and a 1 as the last digit

ASCII-only

@ConorO'Brien yes that's available

Mr. Xcoder

@HyperNeutrino Yup it is 11 for all integers other than 1 and 2 right?

HyperNeutrino

Yes. That's the maximal base possible.

Mr. Xcoder

I got it...

HyperNeutrino

13:02

I guess the only reason it fails for 1 and 2 if you don't add 2 is because you can't use base 0 or 1. :P

(is base 0 a thing o_O) <-- doubt it

ASCII-only

@HyperNeutrino no it isn't

HyperNeutrino

ok good

ASCII-only

balanced ternary kinda counts but mostly doesn't

HyperNeutrino

ok

Mr. Xcoder

I hate the fact that Python does not have a base conversion built-in.

But funnily it has the reverse...

Oh missed that one... Up for a bit of Jelly?

ASCII-only

13:09

@Mr.Xcoder :| i know right

HyperNeutrino

brb

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Triangles of Hexagons code-golf ascii-art Suppose an infinite tiling of hexagons composed of | and /\ characters. Given input n > 0, output a triangular portion of that tiling as depicted in the below examples, anchored with a _: n=1 \_/ n=2 \/ \/ \_/ n=3 \ | / \/ \/ \_/ n=4 \/ \ / \/...

ASCII-only

13:41

@Neil hmm so what exactly fails

New Main Posts

2

Q: Does it oscillate periodically?

Challenge Given a list, determine if grouping the list into runs of increasing and decreasing elements will result in a list of equal-sized lists. In other words, "turning points" of the list are spaced out evenly. Example Here's an example: 0, 3, 7, 5, 2, 3, 6 0, 3, 7 increases, 7, 5, 2 dec...

ASCII-only

13:58

@ConorO'Brien ok so why phi

Neil

@ASCII-only it was a python error

ASCII-only

@Neil would you mind linking to a failing one

Neil

File "/opt/charcoal/charcoal.py", line 3485, in Map
iterable[:] = result
File "/opt/charcoal/charcoal.py", line 432, in __setitem__
self.charcoal.PutAt(self[i], self.xs[i], self.ys[i])
File "/opt/charcoal/charcoal.py", line 796, in PutAt
self.Put(string)
File "/opt/charcoal/charcoal.py", line 808, in Put
line = self.lines[y_index]
IndexError: list index out of range

ASCII-only

oh :|

Neil

Try it online!

ASCII-only

14:05

:D I've fixed it, now I just need to decide on a character for filter

AdmBorkBork

TIL PowerShell has a stack system for locations. E.g., pushd c:\foo changes directories to c:\foo and pushes it onto the stack, then you can do stuff there then pushd c:\bar to get to c:\bar, do stuff there, and popd to automatically go back to c:\foo

Erik the Outgolfer

@AdmBorkBork but I think that's in batch too

AdmBorkBork

Could be. I'm not super-duper familiar with the deep insides of batch

@EriktheOutgolfer The one time I did try golfing in BATCH, I came up with 63 bytes after golfing suggestions. Neil had a 43 byte solution and golfed it down to 35.

Pavel

14:26

Why batch when you can PowerShell instead?

@AdmBorkBork bash has this too.

AdmBorkBork

Because PowerShell requires .NET, so if you're on an old machine, you'll need to use batch files.

Pavel

198

Q: How do I use pushd and popd commands?

What are the practical uses of both pushd and popd when there is an advantage of using these two commands over cd and cd -? EDIT: I'm looking for some practical examples of uses for both of these commands or reasons for keeping stack with directories (when you have tab completion, cd -, aliases ...

shell cd-command pushd

@AdmBorkBork yeah I'd go with installing MinGW and use bash.

Conor O'Brien

@ASCII-only "philter"

AdmBorkBork

14:45

@Pavel Yeah. I can see it actually being rather useful in PowerShell, because you can treat the Registry (or the Certificate Store, or ...) like a folder structure.

mınxomaτ

TIL github supports spoilers: gist.github.com/turbo/f56c07cd3f3716de1dffba4c4b645342

Pavel

The use case I thought of was having a script where you CD somewhere and then need to CD back to the original location at the end.

Adám

Blatant advertisement:

in APL, 1 min ago, by Feeds

About to watch the latest webinar from @dyalogapl - Code Golf Competition Discussion and Results... 11am/4pm EDT/UK

Tweeted by BPBAPLer on October 26, 2017 at 2:29 PM

AdmBorkBork

15:00

@mınxomaτ "Example or something." A+, would click again.

New Sandboxed Posts

15:26

0

A: Sandbox for Proposed Challenges

code-golf Given an email address, the result of a transformation applied to that email address, and a second email address, return the output of the same transformation applied to the second email address. The email addresses will all have the following structure: A string of positive length c...

New Main Posts

0

Q: Make an n-Juggler

I've been really interested with integer sequences that follow the property recently, so here's another question about these sequences. A periodic sequence with the above property is an n-Juggler if and only if it has n unique different values. For example the following sequence is a 2 jugg...

code-golf math sequence

Pavel

CMC: Given an int array, count the number of of times the number changes. e.g. [1 1 1 2 2 5 5 5 5 17 3] => [1 1 1 2 2 5 5 5 5 17 3] => 4

Mr. Xcoder

@Pavel Test case request: [2 2 2]

Pavel

@Mr.Xcoder 0

Mr. Xcoder

@Pavel Jelly, 4 bytes ŒgL’

@Pavel Jelly, 3 bytes ITL

Wheat Wizard

15:40

@Pavel Haskell, 39 bytes

Pavel

C#: n=>{int?i=0,a=n?[0];n.ForEach(x=>{i+=x==a?0:1;a=x;})}

Mr. Xcoder

\o/ Hey look ASCII-only is shorter than Unicode!

Pavel

More test case: [] => 0

Mr. Xcoder

Mine passes.

AdmBorkBork

@Pavel Dangit

Mr. Xcoder

15:43

Heh rip Powershell.

Pavel

If that case could be ignored int?i=0,a=n?[0] would become int i=0,a=n[0], so it costs me a byte.

Wheat Wizard

@Pavel Haskell 35 bytes

AdmBorkBork

23 bytes to handle []

Pavel

Ouch

AdmBorkBork

@Pavel PowerShell, 58 bytes

Pavel

15:46

@AdmBorkBork Did I forget how arrays work or is borked? tio.run/##K8gvTy0qzkjNyfn/…

Mr. Xcoder

Fun fact: My longer Jelly answer does not handle [], while the 3-byter does.

Pavel

I also tried without commas and it errored

So I assume I got the array syntax correctly

caird coinheringaahing

CMP: What is the golfiest production language (not counting J and APL or their variants)

Pavel

@cairdcoinheringaahing Perl

HyperNeutrino

Probably Perl which according to my friend (same one who insists Proton is a golfing language) says is pretty much just a golfing language :P

AdmBorkBork

15:48

@Pavel Oh, durr. Clumsy error. 52 bytes

caird coinheringaahing

Python can be quite golfy

Mr. Xcoder

@cairdcoinheringaahing gs2 :PPP

HyperNeutrino

> production language

Mr. Xcoder

@cairdcoinheringaahing JS beats Python usually

Pavel

@cairdcoinheringaahing Not as much as perl

AdmBorkBork

15:48

$args[0] is $null if you take input via param()

Mr. Xcoder

@HyperNeutrino Hence :PPP

HyperNeutrino

:P

caird coinheringaahing

@Mr.Xcoder Clearly the answer is Jelly

Mr. Xcoder

Haskell is golfy as well, sometimes.

HyperNeutrino

@cairdcoinheringaahing no clearly it's unary

AdmBorkBork

15:49

@cairdcoinheringaahing I'd say Perl as well

Mr. Xcoder

If you want ungolfy, then the answer is definitely Java.

caird coinheringaahing

@AdmBorkBork PowerShell isn't happy with you :P

Mr. Xcoder

@cairdcoinheringaahing Other than Perl, Mathematica's built-ins are very golfy sometimes.m

AdmBorkBork

Perl usually beats PowerShell, so /shrug

In general, PowerShell is roughly on par with Python or JavaScript, usually only a byte or two behind.

Mr. Xcoder

Oh god I hate Mathematica answers with explanations containing ¯\_(ツ)_/¯ so much...

Pavel

15:50

Perl usually beats production languages

caird coinheringaahing

@Mr.Xcoder That's the same explanation for some of the answers in JHT :P

Pavel

Ruby is also golfy by virtue of stealing a bunch of features from Perl.

caird coinheringaahing

Why does this work??? ¯\_(ツ)_/¯

Pavel

JHT?

Mr. Xcoder

Jelly HyperTraining

caird coinheringaahing

15:52

@Pavel Jelly HyperTraining

ninja'd :(

Mr. Xcoder

@Pavel Namely this room.

Pavel

@AdmBorkBork could you golf exit to something that crashes the script, like 1/0? It's acceptable to have a bad exit code.

AdmBorkBork

@Pavel Divide by zero is a non-terminating error in PowerShell.

That's actually golfier than if(){}else{}

by a byte, but hey

Pavel

Hmm... now I'm trying to find a terminating error in PS for 3 bytes or less.

AdmBorkBork

There are very few terminating errors, and most of them are syntax or parse errors

Pavel

15:58

And those keep the script from executing alltogether

The only thing I've found that works is throw but that doesn't save bytes

Socratic Phoenix

ohmygod I just discovered UserScripts and they're GREAT! Auto leader boards FTW!

Pavel

@AdmBorkBork How do I capture the output of something into an argument for another function?

So something like Bash's exit `wc -c foo`, which exits with the code that is returned by wc -c foo

Adám

@Mr.Xcoder I was thinking of renaming the APL learning sessions to APL Power Learning.

DJMcMayhem

Recursive Acronyms FTW

Pavel

16:16

@AdmBorkBork how come exit 5 exits with exit code 1.

DJMcMayhem

Because 5 == 1, obviously

4

Pavel

exit 0 exits with 0, so at least that works.

HyperNeutrino

What does exit -1 give?

Pavel

@HyperNeutrino 1

HyperNeutrino

hm

Pavel

16:18

@HyperNeutrino exit 'foo', on the other hand, exits with code 0

HyperNeutrino

hm interesting...

Adám

@Pavel Dyalog APL, 6 bytes without handling []: +/2≠/⊢; 8 bytes with handling []: +/2≠/⊃,⊢

Pavel

CMC: Exit with code 5

Adám

@Pavel -1 due to being language specific.

Pavel

(In poweshell pls)

betseg

16:25

@mınxomaτ um i think that's HTML5.2, not github

mınxomaτ

Sure it's GitHub, as it is allowed by their Markdown sanatizer.

Pavel

@AdmBorkBork This would be -2 bytes if powershell had reasonable exit code handling: tio.run/##K8gvTy0qzkjNyfn/…

betseg

@mınxomaτ gist (source)

it just inlines the html

Adám

@Pavel APL, 5 bytes: ⎕OFF⎕

mınxomaτ

@betseg That is how that tends to work, yes.

betseg

16:28

so, still W3C

Pavel

@Pavel Powershell: [System.Environment]::Exit(5)

Adám

@Pavel You're supposed to ping yourself!

Pavel

I had a brain fart I saw my name in your message and I clicked on it

Mr. Xcoder

@Adám Lol that is great.

Adám

@Pavel Unfortunately you can't do f←⎕OFF because ⎕OFF is not a function, but rather a variable which causes APL to quit when referenced.

Pavel

16:39

Or even [Environment]::Exit(5)

Mr. Xcoder

@Adám misping or something?

Adám

@Mr.Xcoder Yup.

betseg

@Pavel bash exit 5

bash > powershell

Pavel

@betseg I agree.

Mr. Xcoder

17:00

I just addressed the definition of Pi for “Mix Pi and e to make pie” - It was defined as circumference:radius instead of circumference:diameter lol

caird coinheringaahing

17:15

@Pavel untested, but this should work in Python: lambda:raise SystemExit(5)

DJMcMayhem

@cairdcoinheringaahing Works for me

Mr. Xcoder

@cairdcoinheringaahing Why not just raise SystemExit(5)?

Oh wait you need a function.

Pavel

no why

caird coinheringaahing

@Mr.Xcoder Does that count as a full program?

DJMcMayhem

Why not?

Mr. Xcoder

17:17

@cairdcoinheringaahing ...

caird coinheringaahing

It feels like a snippet, for some reason

Mr. Xcoder

Anyway yours is very wasteful: exit(5) should do it, shouldn't it?

DJMcMayhem

It's not

Pavel

@Mr.Xcoder import sys

DJMcMayhem

You don't need the import I'm pretty sure

Mr. Xcoder

17:18

@Pavel No?...

Pavel

i see

betseg

17:38

@Pavel C, 49 bytes: Try it online!

(open debug to see the exit code)

$ gcc -Wall exit5.c -o exit5
[...]
exit5.c:1:7: warning: ‘main’ is usually a function [-Wmain]

NieDzejkob

@betseg not real C

betseg

@NieDzejkob works in clang, gcc and tcc

NieDzejkob

now use ARM, SPARC, MIPS, anything...

New Main Posts

-3

Q: programming robot in python nxt kit motors

Using a nxt kit, I have built a robot with two motors to move the wheels and one motor connected to a claw-like device that is supposed to be able to drop off objects at given zones. Using ultrasonic and another, not yet given, type of sensor, the robot is required to follow along a straight line...

python pi

betseg

arch was never mentioned :P

NieDzejkob

17:52

this is more equivalent to a hexdump of a binary than a C program

betseg

it was this:

mov $1, %eax
mov $5, %ebx
int $0x80

Mr. Xcoder

CMC: Given two non-empty lists of integers A and B, return the deduplicated elements that appear at the same index in both A and B

AdmBorkBork

@Pavel It does, it's just very non-intuitive and a legacy holdover.

Mr. Xcoder

[1, 2, 3, 4], [4, 3, 3, 1] -> [3]

[12, 12, 30, 12, 45], [12, 11, 30, 45, 49] -> [12, 30]

betseg

also [1, 3, 3, 4], [4, 3, 3, 1] -> [3]? deduplicate

Mr. Xcoder

17:57

@betseg Yes.

AdmBorkBork

It's because the exit code sets %errorlevel% global variable, or you need to use $LastExitCode in like a calling script.

Mr. Xcoder

You can take input as a nested list containing two sublists.

betseg

@Mr.Xcoder do the lists have the same number of elements?

Mr. Xcoder

@betseg yes, may assume that.

NieDzejkob

@betseg the point still stands

Transcript for