The Nineteenth Byte

OldSandboxPosts

1:00 AM

Sandbox posts last active a week ago: Sʨɠɠanography

caird coinheringaahing

1:24 AM

→ 46 messages moved to CG&CC-gaming

lyxal

Thanks caird

They really need to make moving mass messages easier on mobile

Because without a physical keyboard connected to your phone, there is no way to ctrl/shift select messages

caird coinheringaahing

Due to the mod UI, I was close to just deleting all 46 :P

For some reason, it's "move/delete" instead of just "move" and "delete" being separate

Radvylf Programs

3:19 AM

Hoooooooly frick

This is an MCVE of the bug:

fn a<T>(x: Box<T>) {}

fn main() {
    async fn b() {}

    a(b());
}

That is way smaller than I expected

Unrelated String

whoa

nice

Radvylf Programs

The macro wasn't even involved

Unrelated String

so you didn't even end up needing to use macros for the bug, the bug just happened to be in a macro

oh wow lmao

Radvylf Programs

Yeah

And this also means that no libraries should be needed for this to work

Which is a huge relief since it means I don't need to dig any further into tokio/futures

thejonymyster

@RadvylfPrograms whats an mcve, minimum code viable to error or something?

Radvylf Programs

3:22 AM

Minimal Complete and Verifiable Example, yeah

thejonymyster

aha ok

ty

Radvylf Programs

Aw man, it doesn't error in the nightly :/

Unrelated String

f

i assume the original code also doesn't error in the nightly

Radvylf Programs

Haven't checked

It really doesn't matter since the code almost certainly has major errors, but still

Unrelated String

lol

but if it does error then you can still file that delicious bug report

Radvylf Programs

3:31 AM

github.com/rust-lang/rust/issues/103385

Unrelated String

yum

Radvylf Programs

Looks like it's not only me who's found this

github.com/rust-lang/rust/issues/103343

My MCVE is better tho :p

> This is a bug that will get fixed with the next release of rustc, I think!

Unrelated String

:P

PyGamer0

4:39 AM

"Æσ": attrdict(arity=1, dx=1, call=lambda x: mp.sqrt(sum(map(lambda i: (i - (sum(x) / len(x)))**2, x)) / len(x))),

can i make the lambda cleaner?

(it is standard deviation)

oh wait i might be able to transpile it..

PyGamer0

4:53 AM

nvm i used python's statistics module

Aiden Chow

5:09 AM

anyone thats good at pip here, whats the golfiest way in pip to pad a list or scalar with a certain value so that its at a certain length? im probably blind and skipping over a builtin that does just that but like i genuinely dont see it

Aiden Chow

5:39 AM

this is what i have for pad left and pad right with 0's, its way too long: dso.surge.sh/…

ok wait im kinda stupid, it can be golfed

but its still pretty long

for a golfing lang

dso.surge.sh/…

thejonymyster

i found a "grid of zeros" builtin but not a just "list of zeros" builtin

couldnt find anything "padding"ish either :-O

well there is the zip stuff

"aZJb Zip two iterables together, filling missing values with " ", and join each pair of values into a string

ZJa Zip a List of iterables together, filling missing values with " ", and join each group of values into a string"

one of these could be useful (?)

Aiden Chow

@thejonymyster exactly my thoughts, i couldnt find anything to do with padding either

@thejonymyster hmmmm...

thejonymyster

spitballing really, if you could come up with something using that id be impressed :-)

Aiden Chow

well that can be useful for padding with spaces i suppose

thejonymyster

i was also thinking if you could like, generate a length n list of 0s and zip with that and then like... keep the max of each pair?..??...??? i dont know haha

Aiden Chow

5:50 AM

my current strategy is to fill the remaining space with (needed length) - (current length) 0's

thejonymyster

yea that makes sense

@DLosc is there an idiomatic way to "pad x to length y with zs"

(in pip)

Aiden Chow

@thejonymyster couldnt get this to work, and im pretty sure it would be more bytes than what i have currently anyways

thejonymyster

lol yea it was a stretch

and its 2am here :-)

Aiden Chow

ok another try with this:
aZDb Zip a List of Lists together, filling missing values with default value b

ZDa Zip a List of Lists together, filling missing values with default value ""

low chance that it actually works but worth a shot lol

ok nope, setting up the list of lists is too costly

Neil

6:54 AM

@cairdcoinheringaahing apparently I've gained access to the review queue! who'd've thought

Aiden Chow

7:11 AM

bruuuh how do i remove duplicates in pip

is there no builtin for that

Razetime

UQ

Aiden Chow

oh thank god ok

didnt ctrl f the right terms ig lol

Razetime

@AidenChow dso.surge.sh/…

Aiden Chow

@Razetime oh huh didnt realize X was a thing

Razetime

sometimes the wording is unobvious

Aiden Chow

7:18 AM

man too many builtins to keep track of, how do ppl with golf langs like jelly or vyxal remember all their builtins

this is literally ascii only, like bruuh

Razetime

you don't, you just eventually know what to search for

the most common ones are usually easy to memorize

Unrelated String

6

^

*

Aiden Chow

@Razetime yea that makes sense

kinda the reason why ive been putting off learning a golf lang is that theres just too many builtins

lyxal

@AidenChow adding to what razetime said, you also learn a generalised set of functions/concepts common to 99% of golfing languages, which makes going from one language to another easier

For example, once you know what cartesian product is, and how to use it to solve challenges, you don't need to know what it is in each language, you just need to do a little ctrl f for relevant terms

The hardest things for a new user of golflangs are learning your first golfing language and learning all the different techniques for solving challenges

Once you get familiar with those, everything else is just appropriating what you already know

Razetime

8:19 AM

@AidenChow yeah, that's a good reason.

Unrelated String

8:29 AM

i think you should go in with a mindset of "i will rely on documentation as much as humanly possible"

just guess what there might be a builtin for, and if you're stumped scroll through all of them until something clicks

New Posts

8:41 AM

0

Q: How to Implement Snake in the Shortest Code？

No language limit. Operation mode is required. Display the game screen in stdout (not in memory). No keyboard operation is required (characters can be read from stdin). I hope it will become interesting.

game

mousetail

9:29 AM

1 CV down, 999 to go

New Posts

9:57 AM

0

Q: Informatics Task. Graphs and Search

There are N squares in the city. Any two squares are connected by exactly one two-way road. Stirlitz lives in this city. Stirlitz has a hobby - he likes to leave home on Sunday morning, get in the car, choose some circular route that runs through exactly three squares (that is, first he goes from...

code-golf graph-theory search

Sʨɠɠan

1:28 PM

filter being a little too zealous :P

Ginger

1:40 PM

f

Radvylf Programs

3:10 PM

@Sʨɠɠan ooh is that the one I made? Asking 'cause of the <abbr> usage and the regexes mine had :p

Radvylf Programs

4:04 PM

Why I shouldn't be allowed to shop for things: started with a sub-$1000 PC build, and after two hours of "ooh maybe I'll just upgrade this a little bit" I now have a $2500 PC build

Which will be really important for all of the...code golfing and Minecraft I do

mousetail

Relatable

TBF minecraft can get pretty demanding if you add 1000 mods

Radvylf Programs

I'm really torn between Windows, Linux, or dual-boot

I'd need Windows for some games and stuff I have, but Windows is kinda mid ngl

Linux is more familiar and customizable and stuff, but then I run into the issue of support for said software

Ginger

linux forever. this should be easy.

:p

Radvylf Programs

And with a dual-boot you kinda get the worst of both worlds since you need to put up with both of them when they do annoying stuff

Ginger

@RadvylfPrograms what kinda budget you got??? :b

Radvylf Programs

4:11 PM

@Ginger Since I now have a job, my budget is measured in "how many hours of my life do I want to put toward this box of sand" :p

Ginger

and the answer, of course, is unlliiimmmitted

Radvylf Programs

Actually the amount of time I need to scan groceries is a pretty good way to visualize the cost of stuff

"Ooh, the RX 6800 XT is only $150 more than the 3070 Ti, is that worth 10 hours of bagging butter spray?"

Ginger

me and my Pi 4

Ginger

4:25 PM

ffs Chrome juts crashed so hard it took my taskbar with it

New Posts

4:45 PM

0

Q: The smallest area of a convex grid polygon

I got an email from Hugo Pfoertner, an Editor-in-Chief at the On-Line Encyclopedia of Integer Sequences, with a terrific idea for a fastest-code challenge, which will also help verify or expand the boundary of an open mathematical question in optimization. Here's the idea: we want to confirm and ...

sequence grid combinatorics geometry fastest-code

Radvylf Programs

5:00 PM

> and G-SYNC compatibility for a tear-free experience

This is fun if you read it as "tear free" like shampoo

3

Ginger

5:33 PM

What the unit of time you use says about you:
Seconds: Normal person
Milliseconds: Programmer
Nanoseconds: Chemist or physicist
Yottoseconds: Physicist studying the early universe
Frames: Gamer
Ticks: A specific kind of gamer
Meters: Astrophysicist
Centiseconds: I hate you

Radvylf Programs

6:03 PM

Not as bad as hectoseconds

caird coinheringaahing

6:58 PM

@Ginger Ah yes, it'll take me 1200 seconds to walk to work, I am a normal human typing with my normal human hands

mathcat

8:22 PM

@Ginger yeah, and I cycle 6500 frames every day

*gamer swag*

Sʨɠɠan

9:06 PM

@RadvylfPrograms idk

yep

"with modifications by DLosc"

Adám

…
Years: Historian
Megayears: Geologist
Gigayears: Astronomer

Ginger

@mathcat that's distance :p

also, look what I just got:

now I can finally really learn rust

Radvylf Programs

Y'know the book is available free online right :p

Ginger

yes, but I like physically reading it more

I can... focus better when reading a physical book?

not sure if that's actually the right word but I just like being able to touch it more

"Touch the Documentation" :b

well worth the ridiculous price of these books

No Starch Press is the Nintendo of publishing companies

Radvylf Programs

In what way

Ginger

9:18 PM

they make great quality stuff at very high prices because they know you're willing to pay for the quality

Radvylf Programs

Looking on Amazon they all seem like $20-$30

That's ~~cheap~~ pretty typical pricing for a book

Ginger

tf kinda books you got there in Texas

and some of them approach the $75 range

Radvylf Programs

@Ginger That's a little high I guess yeah

Ginger

on the same shelf I saw a book with probably the funniest title I've ever seen in the Technology section: "Eloquent Javascript"

I didn't get a picture, sadly

Radvylf Programs

Comparatively, there is definitely eloquent JavaScript

JavaScript gives you a lot of freedom to write inelegant JavaScript

Ginger

9:27 PM

Compared to a salad recipe written by a corporate lawyer using a phone autocorrect that only knew Excel formulas, sure, I guess :p

Sʨɠɠan

9:55 PM

@Ginger yep

argh im working on rol again and it so bugs me when i get an error because i forgot to recompile the stdlib again

Sʨɠɠan

10:16 PM

LDQ: should any function be convertible a.b() -> b(a) or do you have to mark functions to do that?

Radvylf Programs

As long as you're careful to avoid ambiguity I think that would make sense

Rust does something similar. E.g., f64::to_string(0.0) is the same as (0.0).to_string()

Having to mark functions for it seems kinda pointless, I'd just do all or none

lyxal

10:33 PM

@Ginger no no that's fair enough

Ginger

t o u c h

lyxal

Sometimes a physical copy of a book is easier to learn from than a digital copy

Ginger

t u o c h

Sandbox Posts

0

A: Sandbox for Proposed Challenges

Make a Compiler or Interpreter for any Turing-complete language in any language Any Turing complete language supporting input and output is allowed. Score length of interpreter - number of legal characters in the language interpreted/compiled.

caird coinheringaahing

@SandboxPosts exec

New Posts

11:35 PM

0

Q: Show a balanced binary tree

Given an integer \$n > 1\$, output a balanced binary tree with \$n\$ leaf nodes. The tree should be constructed out of (space), \ and / (slashes). Each slash represents a branch. A node is represented by adjacent slashes: /\. There must be a root node at the top of the tree (i.e. the first row...

code-golf ascii-art open-ended-function

Aiden Chow

11:49 PM

any thoughts before i post

2

A: Sandbox for Proposed Challenges

code-golfarraynumber Conversions Galore! Imagine that there are \$n\$ different types of objects \$O_1,O_2,O_3,\ldots,O_n\$ and they each have a conversion factor \$k_1,k_2,k_3,\ldots,k_n\$. You can, for any \$1\le i\le n\$, convert \$k_i\$ amount of \$O_i\$ into \$1\$ of any other type of object...

im hoping someone could scan over my test cases and reference implementation to see if they are accurate

Transcript for