The Nineteenth Byte

12:36 AM

CMC: Output all the ascii characters (32-126) except those whose values equal at least one of your source characters (in unicode) modulo 95

Pavel

Anyone know what companies make good computer monitors
I've never actually bought one before, I've always just used my dad's old ones

Anonymous

@Pavel Surprisingly, Dell

Pavel

Huh. I never think about Dell. They're... really boring, I guess.

@Mego ._. of nearly 400 monitors they have for sale, 49 support display port.

Also I never realized until today how expensive monitors are

Downgoat

1:08 AM

@Pavel LG

Cheap and great color accuracy/brightness

Anonymous

1:23 AM

LGs are also good. We use both LGs and Dells at work

Conor O'Brien

Golfed a different approach while holding a sleepy baby; will add an explanation later. — Giuseppe 57 mins ago

golf compels us all

Rushabh Mehta

any thoughts on my KoTH in the sandbox?

quartata

1:42 AM

brand engagement has plummeted to an all time low

Draco18s

I made a poor life choice today. I've decided to create a new 2D language and write an interpreter.

Jo King

@Draco18s Any gimmick to distinguish it? I usually like learning 2D languages if they're not too oblique

Draco18s

@JoKing Multiple simultaneous instruction pointers.

Jo King

Off the top of my mind, Cardinal, Beeswax and Fission all have multiple pointers

Draco18s

The syntax is (mostly) based on ><> though the full instructionset of ><> isn't (yet?) supported and a few instructions use different characters.

I am unfamiliar with all of Cardinal, Beeswax and Fission

@JoKing Fission and Beeswax are decent comparisons to what I'm doing. Square grid instead of Orthogonal, my pointers have "energy" similar to Fission, although in my case, instruction pointers headed in the same direction that end up in the same cell will merge (the newest one adds its energy to the older one, then is destroyed).

The reason I started doing this is because I wanted to create a runic enchantment system for a game project and the 2D language....space was essentially the right idea: Mana enters from given points on given triggers (atm only on-program-start implemented) and flows from rune to rune until it runs out of energy. If an instruction requires more energy than an instruction pointer has, then the IP doesn't execute the instruction and doesn't move (essentially a NOP).

So I've also got commands that call out to Unity code; e.g. Q invokes Physics.OverlapSphere()

Downgoat

2:04 AM

For running Python on embedded systems, for CPython— can I take like the pyc files and execute those somehow? I don't want to embed all the python std lib files as not enough ram

Draco18s

picture depicts: Overlap Sphere (dist 4), get the position of the first object, push self onto stack, get position of first object, calculate distance between two vectors, print output, terminate.

quartata

@Downgoat not sure what you mean precisely

Downgoat

@quartata i.e. precompile python to CPython bytecode or w/e it does internally

quartata

right that's what pyc files are

if you run compileall with -b I believe it'll place the pyc files at the same directory level as the py files

you can then safely eliminate the py files

it's technically a carryover from Python 2 but

Downgoat

compileall? is that like a subcommand

quartata

2:15 AM

python -m compileall

docs.python.org/3/library/compileall.html

Without -b it goes into __pycache__ like normal

Downgoat

@quartata So if I do import re, do I need re module in PYTHONPATH or does the pyc have everything?

quartata

If the pyc is in the same place as where the source py would be expected, then it will work without it

The reason why it's an important distinction is because in Python 3.x pyc files go into __pycache__/ rather than cluttering up the top-level (which was the behavior in Python 2). And if you don't have the py files it's not going to load from __pycache__

Downgoat

@quartata so If I were to copy over python executable and just this pyc file— everything would work ok?

quartata

I don't think Python would work without at least imp?

I don't see the point in using Python without its standard library though

Downgoat

ok well rust it is then

quartata

2:24 AM

Lol what

Downgoat

I want to use a language that is not C++ but can interface with C api easily

quartata

Lua

Downgoat

ew

im not an animal

quartata

It's what it was made for...

Downgoat

if I'm using Lua I might as well just use C/C++

OO pls

quartata

2:26 AM

Lua has OO?

Well anyways

I could try to find out which modules it needs

Downgoat

@quartata Lua OO is like ES5 OO I thought

Zacharý

Lua has OO in the same way that ES5 has OO

Nina'd

*Ninja'd

quartata

encodings, io and importlib

Minimum

Probably more

Downgoat

I would use VSL but it doesn't have generic yet :(

Jo King

@Draco18s Neat. Let me know when you think it's in a releasable state and I'll be sure to give it a try

quartata

2:27 AM

These are fundamental components, they're just not in the C part of the interpreter

Downgoat

I have 64KB of RAM I don't think that's enough

python exe is 16KB on its own

not including dylibs

quartata

what are you targeting??? I thought this was iOS

Downgoat

@quartata no embedded arm microprocess

quartata

You actually have a libc you can use?

Downgoat

for what?

quartata

2:30 AM

do you even have a kernel?

you were doomed to C from the beginning

Downgoat

@quartata yes— it is weird but if it has int main() i can get it to run

Quintec

"im not an animal" -downgoat

Draco18s

@JoKing It's pretty solid atm. Going to get a few more operators in and push it to Github probably tonight. (just added vector dot and cross products, for example)

Downgoat

@quartata opls any compiled language that's not Swift should work

oh wait

Quintec

@Draco18s Whenever you're bored, please convert to 3D ;p

Downgoat

2:34 AM

has anyone used crystal here

quartata

@Downgoat No. You're not going to be able to fit the Rust runtime

Draco18s

@Quintec You're the second person to make that kind of comment XD

Downgoat

@quartata O__o is it really that big for even simple program

smh so much for 'C' replacement

quartata

I feel like I need more context

Anonymous

@Downgoat You could use the freeze utility in Python

quartata

2:36 AM

Are you working freestanding

Anonymous

docs.python-guide.org/shipping/freezing

quartata

@Mego he's working on an embedded system with 64 KB of RAM apparently

Quintec

@Draco18s Someday, you may hear the tale of how I tried to make a 4D language when I was bored.

Downgoat

@quartata no

Anonymous

Oh yeah Python isn't an option

quartata

2:37 AM

Frankly I would say it's time for assembly but

Downgoat

@quartata C++ works fine so far but it's ugly

Draco18s

@Quintec I've attempted to navigate 4+ D mazes before. I twas a few years ago and I think the highest dimensionality was 6. 3x3x3x3x3x3. Was a right pain to wrap your brain around.

quartata

@Downgoat what libc are you using

Quintec

That it is, It was a headache to try to visualize the instruction pointer traveling through time... ;p

Draco18s

Especially backwards!

quartata

2:39 AM

To grant some perspective: your system has as much RAM as the Quest for Tetris computer

Start thinking in those terms

Downgoat

@quartata it doesn't have libc but contains most POSIX functions

quartata

You probably can do Rust freestanding but I can't make any ABI promises

Pavel

@Downgoat C#

quartata

The reason why I feel like I'm missing something is because you're working with something at the microcontroller level. This is assembly land

Anonymous

@quartata Great idea - use QFTASM!

Pavel

2:52 AM

Y'all have that QFTASM GCC backend yet

Anonymous

Funny

Pavel

I could have sworn I remembered someone said they were working on that

Anonymous

That would be big Q

quartata

@Pavel I haven't finished it because there are other things that need to be worked on in parallel

Not all of which are under my control

Downgoat

3:11 AM

@Pavel C# is very very heavy

Pavel

@Downgoat I read "Can interface with C easily" and by the time I realized the other requirements it was too late to edit

Downgoat

@quartata :| you don’t need ASM to program microcontrol

Draco18s

3:48 AM

@JoKing Aand pushed to github. github.com/Draco18s/RunicEnchantments Created in Unity 2018.2.0f2, but I'm pretty sure any version 5.0 and later would open it, I'm not using any crazy newfangled features (other than the UI stuff added in 4.6). Hit run, put code in the box, click the button. There's probably still one or two operations that might attempt to parse a Vector3 as a double (structs are ValueTypes that aren't Integers; who knew?) Enjoy!

Pavel

@Draco18s Your solution file has a problem:

Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "RunicEnchantments", "Assembly-CSharp.csproj", "{8BE25938-E7BC-CE77-0A05-88C0465E0903}"
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "RunicEnchantments", "Assembly-CSharp-Editor.csproj", "{4D2DF87A-3767-2565-957E-1E54F9EE9204}"
EndProject

Two projects can't have the same name

Draco18s

that from the sln files?

Pavel

Yes

Also you have a hardcoded path to unity

So it won't build on anyone else's system

Draco18s

I haven't done anything to them other than what Unity generated. Don't think that the project would run without Unity. Oh, stupid paths. F* you Unity.

Pavel

Why did you decide Unity was a good idea for a programming language in the first place

Draco18s

3:53 AM

Because this is the baseline work for another project...which is/will be a Unity game

Pavel

You could have isolated the actual programming language in a non-unity project that people might be able to actually use

Draco18s

I'll have to do that tomorrow. Its midnight.

Pavel

@Draco18s If you make a console app we can get it on TIO

Draco18s

That said, it'd have to be a stripped down version as several of the commands reference Unity functions. E.g. the Q command

Was planning on doing that anyway, I just wanted my full feature set first. ;)

@Pavel Having it on TIO would be cool. Definitely a "sometime next week" sort of thing though.

Pavel

@Draco18s Why sometime next week, you just said tomorrow

Draco18s

4:01 AM

@Pavel Meant that as a "Not a goal for tomorrow, but eventually" sort of thing

I can fiddle with it, but not making it my priority

jaytea

8:09 AM

I know one of the guys who created Unity if you want me to smack him around a bit for you?

New Main Posts

10:39 AM

-1

Q: Python Socket Programming

I've problem in this code. I don't know why is this not running. Before 2-3 day's it's running very well. Now what happened to this don't know. Please help..! import socket socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM) #a = socket.connect_ex(('XXX.XXX.XXX.XXX', 2500)) #s = socket....

maxb

I really don't know how so many people end up here with their questions, without even looking at the name of the website.

maxb

11:18 AM

Has anyone started looking at the sudoku challenge in the sandbox? I'm just waiting for that

betseg

12:21 PM

"we don't use windows on the pcs in the labs better get used to ubuntu" and the pcs have 12.04

maxb

@betseg at least it isn't ubuntu 17

SEJPM

@betseg do they pay for Canonical's Extended Security Support?

(else 12.04 is EOL for about 1.5 years)

betseg

Dunno tbh

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Is the Matrix Positive-Definite? code-golf math matrix Input A \$n\times n\$ symmetric Matrix \$A\$ in any convenient format (you may also of course only take the upper or the lower part of the matrix) Optionally: the size of the matrix \$n\$ What to do? The challenge is simple: Given a ...

HyperNeutrino

1:00 PM

how do I check if [1,2] is in [[1,1],[1,2],[2,1],[2,2]] in JS

in doesn't fucking work because like half of everything about JS is wrong

neither does .indexOf

dzaima

@HyperNeutrino [1, 2] !== [1, 2], so I wouldn't think there's a built-in

HyperNeutrino

1:19 PM

...

ok then lol

thanks

New Main Posts

1:36 PM

0

Q: Get the lowest possible pylint score within 128 bytes of python

pylint has no lower bound on the scores it will give your code. It uses the following metric to score code, with the maximum score being 10: 10.0 - ((float(5 * error + warning + refactor + convention) / statement) * 10) With python 3.6, try and write a program that: Outputs "Hello World" whe...

code-challenge python hello-world error-message

New Main Posts

1:52 PM

1

Q: Transpile Brainstract to Brainfuck

Introduction Brainstract is a dialect of Brainfuck that adds a bit more elements to the syntax. In addition to the normal Brainfuck syntax, there are macros. To define a macro: {macro_name ++++} Then use it: {macro_name} Adds 4 to the current cell Challenge Your challenge is to take a v...

code-golf

0

Q: The least weird fact about the US presidency right now

The least weird fact about the US presidency right now is that there have been two unrelated presidents whose last names start with T-R-U-M. That made me think, how many US presidents share other combinations of characters? There are obviously two presidents that share the characters "BUSH", and...

code-golf string

Quintec

2:07 PM

My teacher bet me I couldn't code isPrime method in one line. Game, set, and match. return n==1?false:n<4?true:!java.util.stream.IntStream.range(2,n).anyMatch((k)->n%k==0)‌;

Poke

2:23 PM

@Quintec you don't /need/ newlines in java... you could just write whatever code you wanted :]

New Main Posts

2:42 PM

4

Q: An ogl-edocf challenge

Input A non-empty shuffled string consisting of ASCII characters in the range \$[32..126]\$. Output The output is obtained by applying successive rotations to the input string. For each letter ([a-zA-Z]) in the input string, going from left to right: if the letter is in upper case, rotate a...

code-golf string

user202729

@maxb Same situation for Stack Overflow. On this site it's more noticeable because there are less ~~questions~~ challenges.

Luis felipe De jesus Munoz

3:10 PM

That moment when your are proud of your 30-bytes answer for Arnauld's question but then comes someone with a shorter answer than yours.... damn it xD

Erik the Outgolfer

um...my Jelly solution is nothing to block you from posting

JS, right?

Luis felipe De jesus Munoz

Japt actually.

Erik the Outgolfer

feel free to post it :-)

Luis felipe De jesus Munoz

but I feel it is not the best solution out there. Im looking for other ways to do it

Erik the Outgolfer

also, my Jelly solution is actually quite bloated...

Draco18s

3:26 PM

Is it over 8 characters? Then yes, it is ;P

Erik the Outgolfer

you'd wish

it's actually 20 bytes too long

Downgoat

3:56 PM

153

Q: Array state will be cached in iOS 12 Safari, is bug or feature?

Today I found some problem of Array's value state in the newly released iOS 12 Safari, for example, code like this: <!DOCTYPE html> <html> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0"> <title>i...

javascript ios safari ios12

Erik the Outgolfer

@Downgoat boo newest version...

looks like sheep were hired as back-end devs

Quintec

@Poke A true one liner is much more satisfying, especially in this hellhole called java streams. ;p

Poke

5:00 PM

@Quintec idk man. sometimes any one liner is satisfying: Try it online!

Kevin Cruijssen

5:18 PM

@Neil @MartinEnder Could either of you help me with Retina? I'm trying to do An ogl-edocf challenge. I know I can get all prefixes of an input using $'. I also know I could get the length per prefix with {$.>'}. And I know I can rotate them either once left with ^(.)(.{$.>'})(?=[A-Z]) \n $2$1 and once right with ^(.{$.>'})(.)(?=[a-z]) \n $2$1. But how to combine all this? How to loop over the prefixes and rotate them?

(All single quotes are of course backticks. Double backtick for code-snippets containing a backtick didn't seem to work here in chat.. Unless I did something wrong, which is also highly likely..)

Erik the Outgolfer

5:35 PM

CMC: concatenated prefixes of input in Dodos

70 bytes (too much clutter to post here)

quartata

6:12 PM

@Downgoat wtf

Something is super wrong there

Quintec

@Poke That is awful. ;p

Draco18s

@Quintec No, this is awful: Try it online!

Quintec

@Draco18s Pshhhhhh, that's just JSFuck. Nothing new ;p

Draco18s

Its still awful :P

did a cops-robbers cop entry in JSfuck once. No regrets.

specifically it was a restricted source where "score" was the number of unique characters

Quintec

#;+

Draco18s

6:27 PM

goes back to writing his interpretter. Oh shucks. I've run out of qwerty-avaialbe punctuation symbols.

I've only got &,[,and] left

Quintec

@Draco18s Try the APL keyboard!

Draco18s

Well, the thing is, I wanted every op to have a way to type it without needing a code page.

Quintec

@Draco18s (Cool thing)[javascript:(d=>{let e=d.createElement("script");e.src="https://abrudz.github.io/lb/lb.js";d.body.app‌endChild(e)})(document)]

ah, whatever

Draco18s

what's that supposed to do?

Oh I figured it out. had to go to abrudz.github.io/lb and click the buttons

@Quintec anyway, not a solution for my intended future use. The "good for codegolf" variant could make use of it, but not the thing I'm actually building

Rushabh Mehta

6:43 PM

can someone look over my KoTH proposal? need some confirmation before I post

Draco18s

I generally like KOTHs, sure

New Main Posts

6:59 PM

0

Q: Output a Sudoku board

Today's challenge is simple: Without taking any input, output any valid sudoku board. In case you are unfamiliar with sudoku, Wikipedia describes what a valid board should look like: The objective is to fill a 9×9 grid with digits so that each column, each row, and each of the nine 3×3 subgr...

code-golf kolmogorov-complexity grid sudoku

dzaima

@RushabhMehta generally it's suggested to keep a challenge in the sandbox for at least 3 days. Though I haven't read into the challenge too much, it seems reasonably long, though 2 rules sections feel a bit weird, and could do with being one after the other, with the submission info after the rules, by the controller info

Rushabh Mehta

@dzaima Yea don't intend on posting till later, but still wanted feedback

Draco18s

7:24 PM

buhahaha, it works!

New Main Posts

0

Q: Build a Markdown bomb

I'm sure most of us have heard of zip bombs and similar decompression bomb tricks, where a maliciously crafted input creates a massively disproportionate output. We even had a question on here to do that to a compiler at one point. Well, it occurs to me that Markdown is a compression format of ...

code-challenge busy-beaver

Neil

8:09 PM

@KevinCruijssen I don't think you can do it in a single substitution, I would prefix a newline to the input, then for each character in the input, perform any appropriate rotation, then append the character to the output

New Main Posts

0

Q: A sorcerer's spellbook

A D&D fan from a recent Hot Network Question seems to have some trouble working out whether a sorcerer's chosen spells line up with the possibilities - and I think we should help! Introduction (all of this is already described in the previously mentioned question) A sorcerer knows two level 1 ...

code-golf

Conor O'Brien

9:16 PM

@JoKing Re: this -- I respectfully disagree. I think part of the fun in golfing (at least for me) is combating what's thrown at you. The fact that I'm given a string allows me to approach the problem in a few different ways, even if the core of the problem is just joining suffixes. I think it neither nice nor wise to enforce this "core of the problem" mentality, ...

5

especially on newer users. The problem you (and others, not just you) raise is rather nitpicky. I get that you want the language to be accurately represented by the byte count, but if a language deals poorly with string manipulation or STDIN (e.g.), I feel like that shouldn't be overlooked. As an example: so what if the "core task" is only 14 bytes? The challenge isn't at fault for exposing a weak point in a language.

Nathan Merrill

90% of real world code isn't algorithms either

Conor O'Brien

I can understand not wanting to write the same bit of code on every <X> answer I write to handle input, but the reality is, input parsing nowadays is the exception rather than the norm. I think we should tolerate these relatively infrequent requirements and just enjoy the process

Nathan Merrill

error handling, logging, input processing, file/network manipulation

DJMcMayhem

It's also the less fun part of it :P

Nathan Merrill

oh, for sure. It's also very language and program-specific that it's not a good fit for challenges anyways

New Main Posts

9:41 PM

0

Q: Removing points from a triangular array without losing triangles

I have a combinatorics problem that I'd like to put on the OEIS—the problem is that I don't have enough terms. This code challenge is to help me compute more terms, and the winner will be the user with the submission containing the greatest number of terms. The Problem Suppose I give you a tr...

sequence combinatorics fastest-code

Quintec

11:36 PM

@ConorO'Brien I agree with you up to an extent. Per this comment, I completely agree that taking in a sentence/list of strings isn't unreasonable - but make sure we aren't encouraging "find f(n) and output the square of the sum of the list of the prime factors of f(n) etc."

Conor O'Brien

@Quintec yeah, that's fair. I'm really just talking about "f(n) + IO"

New Main Posts

-2

Q: You failed everything!

Your goal is simple: to fail everything. More precisely, you should write the shortest code that triggers a compilation/interpretation error, or a runtime error. What does not count Failing with symbols that are not covered by the language syntax and are meant to appear only in string literals...

code-golf error-message

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