The Nineteenth Byte

DLosc

12:11 AM

Kinda disappointing that Coconut doesn't appear to have an outer-product/table builtin.

Number Basher

12:54 AM

@Adam yah sure but all humans are lazy

OldSandboxPosts

Sandbox posts last active a week ago: When to give up and start again

user

@DLosc that’s quite a pleasing solution >_<

(Am i using the emoticon correctly?)

thejonymyster

f(_-1) almost looks like some kind of like... face palm / head in hands emote lol

user

Haha yeah the f does look like an arm

TIL when you enable WS you also enable Hyper-V so even plain Windows runs in a VM

forest

1:14 AM

@user Windows always runs in a VM in order to separate their so-called "Secure Kernel" from the rest of the system.

Even when you don't enable Hyper-V. They call the feature VBS (Virtualization-Based Security).

user

Isn’t that only if you enable secure boot?

forest

On Windows 11 it's always enabled. I think it's usually enabled on 10 but I don't know (I neither use nor like Windows).

Steffan

@DLosc I don't think anyone really learned it. We might want to relearn it

user

Oh, interesting

forest

It's a good idea to enable it. It will greatly improve Windows security.

Seggan

1:29 AM

is there any way to simplify this: !(last is OpNode && (last.operator == Operator.PRINTLN || last.operator == Operator.PRINT_NO_NL))

seems too long for a boolean condition

also has too many parens

user

Assign to variable

Steffan

@Seggan If && has higher precedence than || (It does in JS): !(last is OpNode) || last.operator != Operator.PRINTLN && last.operator != Operator.PRINT_NO_NL

(didn't test of course)

graffe

3:44 AM

@Steffan yes that is what I was reading

emanresu A

@Steffan last isnt OpNode

Steffan

Dk if that's valid Java

I mean Kotlin

Looks like it's !is

emanresu A

huh

Steffan

4:03 AM

Looks like next LotM is tied between Prolog, J, and Nim lol

AviFS

4:16 AM

@DLosc Oh, that is a nice lang. Can't tell yet if it's different enough from Python to be interesting, nor if it offers enough golfing opportunities over Python for most CGCC challenges. It doesn't intrinsically seem golfier than Python, though.

The terminal repl has syntax highlighting which is quite interesting, though. (They've also taken care to develop syntax highlighting for a lot of editors, and the documentation does seem pretty long. Don't know for sure if necessarily thorough, but definitely had a lot of time invested.)

Unrelated String

@AviFS it's definitely intrinsically golfier by virtue of being a strict superset, it's just a question of by how much :P

if nothing else -> for lambdas shaves some bytes off pretty uniformly, if not in a particularly interesting way

more expressive for sure

emanresu A

5:32 AM

9u7

]\||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||

æ‘0nhj56cv 78]\ufim

wee===================

Cat lol

Unrelated String

i'm impressed by actually holding shift for the ||||||||||||||||||||||

Bubbler

6:10 AM

wee

emanresu A

@UnrelatedString The two keys are kinda close I guess

Unrelated String

and maybe if enter was held from the beginning that wouldn't be an obstacle having it in the way

Bubbler

but holding \ and then holding shift doesn't work

emanresu A

Does on my computer

Bubbler

Ooh

emanresu A

6:53 AM

I feel like my cat is more active than I am

mousetail

7:37 AM

Is there a shorter way to declare a unsigned char in C?

Sandbox Posts

7:49 AM

0

A: Sandbox for Proposed Challenges

Is this graph a tree? code-golf decision-problem graph-theory Given an undirected graph, find out if it is a tree. A tree is an undirected graph in which there is exactly one path between any two vertices. Input The input graph is represented as an adjacency list, i.e., a list of pairs that repr...

Bubbler

8:12 AM

@mousetail You can use -funsigned-char compiler flag to treat char as unsigned (works in both gcc and clang; ato)

mousetail

8:25 AM

@Bubbler Thanks, can't set command line arguments though unfortunately

Bubbler

Still doing USACO?

mousetail

USACO?

Bubbler

Oh, that was a different guy

Anyway, there are several possible answers in that case...
1) there is absolutely no shorter way if you're using `unsigned char` only once
1.a) but sometimes simply using `int` or `char` will give correct results
2) standard solution: `#include <stdint.h>` and use `uint8_t`
3) hacky solution: `#define U unsigned char` and use `U`
4) less hacky solution: `typedef unsigned char U;` and use `U`

mousetail

8:43 AM

Thanks

graffe

9:27 AM

I wonder if my bounty has the strange property that one person thinks it is easy but doesn't want to get bounty and no one else knows how to do it

pxeger

You can apply all the bounties you like but if noone is interested in it then you're not gonna get an answer

graffe

@pxeger that's also true!

I hope it's not that

I was wondering how much real money I would give for answers

Definitely one dollar :) But maybe more

mousetail

Going to post this in about an hour, any last minute feedback?

5

A: Sandbox for Proposed Challenges

Radiation Hardening Koth king-of-the-hill radiation-hardening The goal of radiation hardening is to make a program still work after you remove a byte. However, what if a skilled competitor is purposefully trying to mess with you? In this game, each bot will take turns removing one character from ...

emanresu A

9:49 AM

@ais523 is probably gonna use A Pear Tree :p

mousetail

I'd like to see that

Is the rule that negative score bots will be disqualified acceptable?

emanresu A

Since you're recompiling the program every time, it seems kinda unfair to allow 11s for compiled langs and only 1s for interpreted langs.

@mousetail How's that possible?

mousetail

10:34 AM

@emanresuA I'll manually comment them out until their score is positive again

I could just remove the rule, might exclude a few languages with catasrophic compile times

emanresu A

Please do

Since you're only running each version of each program once, execution time is compile time + runtime

And if you add special cases for compilation it turns into a debate on the definition of "compilation"

mousetail

Ok better now?

emanresu A

yes

NoHaxJustRadvylf

12:53 PM

@emanresuA They're improving. Hitting an Altgr in there, that huge combo multiplier with the |s, and a good randomness entropy in certain places. Soon your cat's gonna be out of the neighborhood keyboard stepping leagues. You better get them a professional trainer.

GingerBot

> wee

user

1:11 PM

Why do I feel like emanresu's typing that out himself and not his cat? 🤨

Zion mycelia adamancy

@user emanresu is his cat

thejonymyster

actually, it's emanresu's monster

GingerBot

what

thejonymyster

emanresu is the name of the doctor

user

@GingerBot Frankenstein

Seggan

1:33 PM

LDQ: should negative numbers be falsey?

Bubbler

1:46 PM

That's how hexagony's branching works (positive vs. other)

I guess different truthy/falsy just gives opportunities in different challenges

PyGamer0

@user yeah it does

vdifvidsfiszfisaowaifsaofsaofoasfoszfsad

sorry i was trying to fend off a mosquito

:P

GingerBot

fake: vdifvidsfiszfisaowaifsaofsaofoasfoszfsad
real: qec35227b8mn98,ppppppppppp0,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,n7

Zion mycelia adamancy

2:37 PM

Okay, emanresu's cat's keyboard smashes were funny the first couple of times, but this room still has rules against posting noise. If, for some reason, you have a bunch of random text in your text box, don't press enter. If, for some reason, something causes a bunch of noise to be typed and posted, please delete it if you have the time to do so.

13

thejonymyster

3:04 PM

alternatively: your cat can get its own account and post noise on its own terms (without affecting your rule abiding status)

speaking of random text: are there any studies of keymashing yet? me and some friends are trying to make a lang designed to look like authentic keymashes (and are otherwise generally interested in how they are formed)

id think its only a matter of time anyway

also: i forget but isnt there a challenge about verifying how close to "truly random" some input is?

user

Everything can be considered truly random

It's unlikely for a monkey to type out valid Rust code but it's totally possible

thejonymyster

right i guess it was like

"how close is this to expected randomness" or smething

idk i didnt write it lol

it was explained better there :P

user

Don't mind me, I like nitpicking to annoy others :P

thejonymyster

no you have a point

it had some laid out criteria about it

(as any good challenge should)

i just wish i could remember what specifically lol

graffe

3:46 PM

Do we still have a permanent bounty scheme?

thejonymyster

4:00 PM

@graffe yeah, here

Neil

4:14 PM

~~today~~ a few days ago I learned that (arg) (binop) (unaryop) (arg) is actually a syntax error if binop has higher precedence than unaryop

JS example: (function*(){return 1+yield 0;})

Python example: print(1*not 0)

thejonymyster

i dont understand

or wait, i see your spacing is a clue

literally why would it be like that though thats so bad :P

Seggan

CMP: do yall want a challenge about implementing the JVM?

(at least a subset of the JVM)

thejonymyster

@Seggan personally i only do easy challenges :P

what would implementing the jvm entail, asking as someone who has no idea what it is

Seggan

its the VM that runs Java bytecode

basically youll need to implement the stack, a few basic opcodes, the variables, and jumping

graffe

4:42 PM

@thejonymyster cool. Thanks

graffe

4:54 PM

@thejonymyster that's a great list!

user

@Seggan Might be too hard unless the subset is very small but then it's not the JVM anymore and we've had challenges about implementing interpreters for stack-based languages

Zion mycelia adamancy

There is a meme along the lines of

"abcdefghijklmnopqrstuvwxyz"
If you saw a keysmash, you're gay
If you saw the alphabet, you're straight

Basically, even the "most natural" ordering of letters can be seen as a keysmash

user

Huh, I did see a keysmash interesting

Zion mycelia adamancy

@user Sorry, you're gay now. I don't make the rules

user

lol

I wonder why though

I think maybe partly because we don't always read by starting at the left and taking in each character one by one?

Zion mycelia adamancy

5:09 PM

@Neil Idk what you mean, works for me :P

thejonymyster

5:20 PM

@graffe agree, though i have to say my personal favorites are the ones i have up right now :P

mousetail

6:29 PM

Why does AES523 community wiki every post?

Zion mycelia adamancy

6:51 PM

@mousetail ais523 dislikes the way the reputation system works, but enjoys code golf and participating on the site

mousetail

Understandable

Do you still get notified of comments under community wiki posts?

Steffan

I think so

Zion mycelia adamancy

Yes

Steffan

He also didn't want ownership over his posts

mousetail

7:10 PM

I hope he updates his post, the bot is really interesting but unfortunate that it doesn't fit the output format

emanresu A

7:52 PM

@Neil TIL yield's an operator

Sandbox Posts

8:19 PM

0

A: Sandbox for Proposed Challenges

Carry-less sum given a base b Note: I'm mostly posting this in the Sandbox because I suspect it might be a dupe but can't find any. But, of course, any input dupe-related or not is welcome. Given a list of positive integers \$\mathcal I=I_1,I_2,I_3,...,I_n\$ and a base \$b>1\$ return their "carry...

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