The Nineteenth Byte

OldSandboxPosts

01:00

Sandbox posts last active a week ago: Is there a area that can see the entire perimeter of a polygon code-golfgeometrydecision-problem

Radvylf Programs

01:29

SOCK²'s debug interface now has cool graphs:

emanresu A

noice

Is this serverside or clientside?

Radvylf Programs

Client side

emanresu A

Cool

Radvylf Programs

The client-side proxy has a WS server running, so my debug interface just connects to that from the browser and is sent all of the stats

emanresu A

I don't entirely understand how sock^2 works, but how hard would it be for your school district to fix if they found out?

Radvylf Programs

01:32

The easy way to take care of it would be blocking the URL I use to smuggle the proxied traffic through

emanresu A

That's easy to change though right

Radvylf Programs

As for detecting traffic that isn't being proxied, which is a significant percentage of it, there's not really much of a way to detect it as far as I can tell

@emanresuA Yeah, mostly

I'd just need to create another semi-legitimate school-related website

So I have an excuse to get it unblocked

@RadvylfPrograms (Since what makes SOCK² so effective is that it only proxies traffic that needs proxying, and everything unblocked and secured by TLS is just rerouted to a socks5 server running on the client)

emanresu A

Oh is your school wifi whitelisted

Radvylf Programs

@emanresuA I'm not entirely sure if it's a whitelist or blacklist

If it's a whitelist, it's very comprehensive, and if it's a blacklist, it updates very quickly

emanresu A

I would say try heroku free tier but it ded

Radvylf Programs

01:37

Well, when I got my new radvylfy domains, I tried them though DO first, and they were blocked

So I think it's just a whitelist, and ContentKeeper probably collates the whitelists from all of the schools and companies that use it, so that it's hard to find stuff that shouldn't be blocked but is

They might even use some sort of like, AI thing to figure out if a site's "appropriate"

emanresu A

Try *.herokuapp.com, *.fly.dev

Radvylf Programs

Hopefully won't matter, the traffic that goes through the proxy-proxy is mostly occasional static sites like MDN and documentation on github.io, so I doubt it'd raise any suspicion

The only thing I send through it that's at all meaningful in terms of bandwidth is my stress test, the Reddit homepage, which is like 20 MB

lyxal

CMC: See if you can spot anything wrong with this SBCS codepage

(there is something objectively wrong with it)

emanresu A

Same error as Vyxal 2?

lyxal

no

Radvylf Programs

01:47

Duplicate superscript +

lyxal

wait really?

that's not what I was thinking of

New Posts

0

Q: Understand "Merge two sorted linked lists" on hackerrank

The question comes from the problem https://www.hackerrank.com/challenges/one-week-preparation-kit-merge-two-sorted-linked-lists/problem?isFullScreen=true&h_l=interview&playlist_slugs%5B%5D=preparation-kits&playlist_slugs%5B%5D=one-week-preparation-kit&playlist_slugs%5B%5D=one-week-day-five Sampl...

code-challenge

emanresu A

Also why is ⁴ not with ⁰¹²³?

lyxal

@emanresuA lambda grouping - that's intentional

no the issue I'm thinking of is way more subtle

emanresu A

What happened to quad backtick for next 4 as lambda

lyxal

01:49

rendered too similar to the other 3

Radvylf Programs

″ and " and ” and “?

emanresu A

I saw that too

lyxal

no, those are for strings

y'all are missing a very very crucial flaw with the SBCS codepage

Radvylf Programs

Four mighhhhht be execcive lol

@lyxal That's not an ASCII % is it

Is it all non-ASCII, if so I hate you

lyxal

it's more obvious than that

Radvylf Programs

01:51

oh okay phew

emanresu A

No, it's ASCII

lyxal

@RadvylfPrograms jelly has last 4 atoms as monad/dyad

oh wait you mean the string delimiters

Radvylf Programs

Actually that would be god-tier though
A language that looks like it just has an ASCII code page, like the old second gen langs, but they're all homoglyphs and you don't tell anyone

lyxal

" " for normal strings, ″ for dictionary, ” and “ for b255 compression

emanresu A

Is it that ⊻ isn't monospace?

Radvylf Programs

01:52

I mean half of the characters there do not monospace

lyxal

it's not to do with individual characters

Radvylf Programs

There's 17 rows

lyxal

bingo!

Radvylf Programs

There's a 0 row after 9

lyxal

correctamundo

emanresu A

01:53

Oh wow that's ... lol

I feel like an idiot

lyxal

I somehow managed to big brain a SBCS with 17 rows

Radvylf Programs

So it's a S BCS

emanresu A

Nice hair space

Radvylf Programs

Yeah, did the code point from memory

Took me two tries though

lyxal

gotta love thinking you have more characters to assign stuff to then you really do

Radvylf Programs

01:55

Since I can't remember which order they go in

caird coinheringaahing

Just a reminder that there's 2 more days to submit questions for the moderator election questionnaire

emanresu A

Idk if anyone's going to but pinned just in case

It's hard to write good questions

lyxal

02:56

Offline for maintenance?

Oop nvm

emanresu A

05:15

Fun fact: In french, OOP is POO

lyxal

Pobject Oriented Ogramming

PyGamer0

05:35

@lyxal did you mean Pbject Oriented Ogramming?

att

07:42

project oriented obgramming

PyGamer0

09:42

my brain wants to make a practical programming language, heavily based on math

PyGamer0

09:59

something like:

repl> x < 3; x ∈ 𝕎
{0, 1, 2}
repl> f(x) ≔ x² + 3x - 2
repl> f(x) = 0
{-3.562…, 0.562…}

graffe

10:32

I have a text file with text followed by some number of spaces and then a decimal number with two decimal places on each line. I just want to add up the numbers. What is a golfed command line to do that?

e.g SumUp *CHOCK SHOP 3.00$

that one of the lines

sorry that is with cat -A. The line is actually
SumUp *CHOCK SHOP 3.00

pxeger

shell is not the right tool for the job for anything involving numbers

use Python or something

or even Excel may be easier

graffe

how about running perl/python from the command line?

pxeger

yeah?

graffe

maybe grep can find the numbers?

mathcat

@pxeger Excel isn't good at numbers, it's good at automatically converting numbers to phone numbers.

graffe

10:36

maybe it can be fed to dc ??

I just need an expert :)

and the answer is....

awk '{ sum += $NF } END { printf("%.2f\n", sum) }' temp.txt

awk for the win

lyxal

11:51

LDQ: Good/mnemonic unicode character for range(0, len(thing)) and range(1, len(thing) + 1)?

emanresu A

Make them similar, whatever they are

lyxal

obviously

How about Θ for [0, length) and Φ for [1, length]?

too similar to each other?

pxeger

if you're gonna use a greek letter, I'd choose iota

lyxal

I need two letters

iota and what?

Ginger

oh lyxalllll

ya know what I just saw on the starboard?

do it

lyxal

12:05

@Ginger with a moderator election starting tomorrow, if I want any chance of being taken seriously as a candidate then I'mma have to pass on that

Ginger

I think your biggest selling point in the elections is that you don't take yourself seriously

lyxal

I understand, but I've come to want to be a tad more serious

Ginger

well as long as you can still epicly troll us sometimes that is fine

so anyway, CMQ: Should a desktop shell start from /sbin/init or systemd?

I think systemd because init feels like a relic of another age

pxeger

systemd is an instance of /sbin/init

$ la =init
lrwxrwxrwx 1 root root 22 Aug  8 13:35 /usr/bin/init -> ../lib/systemd/systemd

Ginger

okay, so I guess the real question was: Do I use a systemd service or something in /etc/init.d?

whoopsie :p

pxeger

12:13

you should probably be using a login manager, e.g. sddm

Ginger

you misunderstand, I am making a desktop shell

in pygame

for a raspberry pi zero

pxeger

but the answer is a systemd service, the stuff in /etc/init.d is probably run by a systemd service anyway, and is only there for backwards-compatibility

Ginger

hooray!

PyGamer0

13:08

@lyxal iota and kappa

lyxal

~~how is a twitch emote gonna help with an esolang?~~

PyGamer0

@Ginger pygame-r0

@lyxal :/

@lyxal but is it good?

pxeger

1 hour ago, by lyxal

I understand, but I've come to want to be a tad more serious

;)

lyxal

@pxeger I only said a tad more

@PyGamer0 I think so

I'll use those two characters

PyGamer0

evil smile

from flax's wishlist.md
- ι range
- κ range from 1

pxeger

13:11

@lyxal alternatively, iota and dotless j for symmetry?

lyxal

dotless j seems better for complex number literals

although somehow I've forgotten to include something for complex number literals

pxeger

13:33

CMC: all partitions of a string (or array), but sorted and grouped by number of groups. e.g. "abc" -> [[["abc"]], [["a", "bc"], ["ab", "c"]], [["a", "b", "c"]]]

you may sort in either order

lyxal

Vyxal, 5 bytes: øṖ⁽Lġ

which is øṖartitions, ġrouped by ⁽Length

pxeger

brownie points if you don't use a partitions builtin

lyxal

well lucky for me it's too late at night for brownies

Sandbox Posts

15:06

0

A: Sandbox for Proposed Challenges

It's Just Rocket Science code-golf math Write a program/function that finds the amount of fuel needed to escape Earth's gravity well given the exhaust velocity of the fuel and the amount of mass needed to get to using the Tsiolkovsky rocket equation: $$\Delta v = v_\text{exhaust}\ln\dfrac{m_\tex...

PyGamer0

15:41

whos gonna run for mod tomorrow?

(or walk if you prefer)

mousetail

Sandbox posts?

codegolf.meta.stackexchange.com/users/31362/sandbox for moderator

AncientSwordRage

15:57

At only one upvote I'm still reluctant to post this:

1

A: Sandbox for Proposed Challenges

Decompress a Sparse Matrix (WIP) The dual of this challenge. Decompress a sparse matrix reversing the method here Compressed sparse row (CSR, CRS or Yale format). There will be 4 inputs, either as separate variables or as a list of lists: V, a list of the nonzero elements of the matrix in row-ma...

Neil

18:37

@pxeger Would you mind updating Charcoal on ATO to 00bb2cee11cf2b08657aa9cd3e537ff50a5a0da3?

Sandbox Posts

18:57

0

A: Sandbox for Proposed Challenges

Create a nibble shorthand I recently stumbled across this image on wikimedia commons. It's a little bit of an information overload at first, but after examining it a bit it shows an interesting number system for writing nibbles. Image created by user Watchduck. First off a "nibble" is a 4 bit n...

Steffan

@AncientSwordRage It probably got buried in the sandbox, so no one notices it to upvote it anymore

graffe

Evening all!

Steffan

1pm lol

mathcat

19:32

9:30 PM here

graffe

19:52

This is very impressive and deserves upvotes codegolf.stackexchange.com/a/252211/108721

@mathcat somewhere in the EU?

@Steffan west coast US?

mathcat

mhmm

germany

graffe

@mathcat my guess wasn’t too bad :)

mathcat

also EU doesn't mean Europe, it's short for european union

graffe

I know that!

Which maybe mens my guess was better than it might have been :)

means :)

emanresu A

20:12

@mathcat was 8:30 AM here

graffe

@emanresuA whoa….Australia?

Ah….New Zealand?

Sorry about the ignorant Australian guess

pxeger

@Neil Done

Neil

21:07

@pxeger Thanks!

Sandbox Posts

22:48

0

A: Sandbox for Proposed Challenges

An Optimally Suboptimal Solution You have grown disillusioned by finding optimal policies for heavy-tailed distributions and their "skew you" attitudes. You decide that for this challenge you are putting your foot down and refusing to optimize your policy further if it means having unbalanced err...

Ginger

23:57

Reminder that codegolf.meta.stackexchange.com/questions/25098/… still needs your input!

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