The Nineteenth Byte

DLosc

00:03

@thejonymyster The algebra's not hard, but it is tedious

New Posts

1

Q: Help me automate codegolf solution creation?

Introduction I would assume like most visitors to the codegolf site I have only ever lurked on the site and never actually have submitted a solution. Though, I would like to make a contribution no matter how long it will take me (or my computer) to generate a solution. Would you help me? Challeng...

DLosc

Looks like Nim will be Language of the Month for October.

Seggan

00:21

@NewPosts hmm how will we actually solve this

wed need a copilot api or smth

DLosc

I think there's a neat challenge in there somewhere, but I'm a little confused what it's actually asking for.

Seggan

given test cases, generate a program that solves the test cases

ig just loop until some random program passes?

DLosc

Or hard-code, maybe

Seggan

?

we cant possible have every solution in there

caird coinheringaahing

The fact that it takes from existing solutions (?) is weird

thejonymyster

00:43

@DLosc sorry :-)

OldSandboxPosts

01:00

Sandbox posts last active a week ago: Repeat Values In Array

Unrelated String

why is it that german se's new site design is gorgeous but the actual icon is

Thomas Ward

yawns

ohai everyone

caird coinheringaahing

No, do the onebox thing :p

@UnrelatedString Guess chat hasn't updated yet :/

Radvylf Programs

01:38

@UnrelatedString Yeah, I noticed that too. It's kinda ugly.

They should just use the ß from the site design

or like, DE styled in the same way as the site itself

Unrelated String

01:56

yeah

either of those would be so good

the eszett on the site design might be a bit tall to turn into the icon but it's worth a try and they could totally pull off site design style de

Radvylf Programs

My first thought when I saw it was that it was an Adobe product

Followed by realizing it was the German language site, and wondering if they went with a like, bright purple futuristic sort of theme

Unrelated String

^

bright purple late 90s idea of futuristic

Unrelated String

02:30

like some middle school textbook

Radvylf Programs

Why on earth did C++ look at C's undefined behavior and go "yeah that's a feature"

Just seems like such a bizarre thing to do

Accept what is de-facto a bug for what, 20 years, everyone knows it's bad and you should avoid it, and it's just valid 'cause why not

py3programmer

03:35

C++'s improvement over C is classes, right?

and better syntax

Sandbox Posts

0

A: Sandbox for Proposed Challenges

Help! I got caught bunking!code-golfrandomexcuse-me Oh no! My English teacher just caught me bunking! Quick! I need an excuse to get away! Okay, that was too frantic. What your task today is simple: create a (wacky) excuse-maker, using an arrays, taken using a way convenient for you, a a is a l...

Unrelated String

03:57

why is it that i don't seem to be capable of submitting programming assignments any earlier than 10 minutes before the deadline
but i always get them in at that point

py3programmer

in school?

Unrelated String

i actually just had an assignment to implement a bare-bones shell that i put almost all of off until the deadline and couldn't do by then
but the course has a "slack hours" policy, so naturally i spent 48 of 72 occasionally working on it but not really then by hour 72 i just finished it anyways

py3programmer

i used to finish all my assignments in a single period, even if there were, like, 7 of them

Unrelated String

i had like half the assignment left and my power went out the moment i got into it but after four hours i went to my mom's house and it just happened

@py3programmer do i look like an employed person to you

py3programmer

perhaps

PyGamer0

04:17

@UnrelatedString what is the name of your shell? psh? perhaps a shell?

Unrelated String

hah

i think i might already be violating the class policy on discussing assignment details so i'll not answer that

actually no i'll check that because this is a publicly available part of the course

actually have i ever mention what university i attent

not that it matters because my name is out there lmao

anyhow i've got some other shit to do rn

PyGamer0

lol

emanresu A

05:13

@py3programmer "better"

py3programmer

05:29

what?

emanresu A

05:42

At least C has a function for printing

At least its syntax makes sense and its operators aren't overloaded cursedly

At least it has cursed bits rather than being cursed bits

py3programmer

even C++ prints

cout>>"Hi"

or is it cout<<"Hi"

thats confusing

PyGamer0

06:07

its <<

Unrelated String

06:19

tbf c++ also has those

it just doesn’t want you to use them

or specifically that the rest is pervasive

also templates and various edge cases of implicit class stuff are cursed

py3programmer

strange

what kind of language doesn't want people to use it

graffe

CMQ give a prime with the longest sequence of increasing digits in it. E,g, 12345 or 642345 (these are not prime)

Oh I think I found it

Aiden Chow

@graffe LOL

graffe

9012345678901

py3programmer

06:41

btw one of the biggest primes i know is belphegors prime

1,000,000,000,000,066,600,000,000,000,001

graffe jumped out?

what an animation

Neil

@mathcat you're not trying, you left in a space between else and[

graffe

07:59

@py3programmer it is cool!

py3programmer

08:19

the jumping or the prime?

Aiden Chow

@py3programmer hes replying to ur prime msg, so obviously the prime lol

py3programmer

graffe jumped out again

Aiden Chow

wdym by jumped out? u mean left the room?

i can still see him in the room

mousetail

Well giraffes are tall you you can still see them in the room even if they are some distance away

py3programmer

do you see a bar with our pfps on the right

i saw his jump out with his pfp fading

Aiden Chow

08:32

@py3programmer yep

no hes literally still here

i can see his pfp rn

py3programmer

wait now he is

Neil

@RadvylfPrograms undefined behaviour is basically illegal code that the language can't be bothered to detect

for instance, any out of bounds array access is an error on your part. C(++) puts the onus on you to get it right, while, say, Python wastes time checking every access, even if your program is correct

graffe

09:07

@py3programmer it's my phone. Just assume I will be back soon :)

py3programmer

09:24

very strange

graffe

@py3programmer yep

DialFrost

09:47

Hi guys

I tried using objective-c on TIO

but it didn't work, am I missing something

tio.run/##y0/KSk0uySxL1U3WTc5JzEv//…

py3programmer

10:50

perhaps @Dennis would know

mathcat

Imagine Dennis actually replied lol

PyGamer0

11:28

lol

@py3programmer Unrelated/ but, perhaps he has not included the correct header?

graffe

13:59

We have had cubic and quartic solving challenges but no quintic

I am tempted to pose one unless anyone thinks it's a bad idea

I am aware there is no general formula

flawr

What would be your criterion for correctness?

graffe

All the solutions will be integers so you have to find them all

I'll just create random quintics with integer roots between -100 and 100

flawr

then I guess many people would just iterate over the integers until all solutions have been found

graffe

Isn't that 201^5 time?

I would require solutions in less than a minute

flawr

to check if a number is a solution, you just need to plug it into the equation and see if 0 comes out, no?

graffe

14:08

Yes

But doing that 201^5 times in less than a minute is hard

flawr

but why 201^5 times?

you only need to do it 201 times

graffe

There are five numbers defining a quintic

Oh I see your point

flawr

:)

graffe

Silly me

Thank you

flawr

can happen to anyone:)

sure!

graffe

14:10

:)

Hmm..so I am going to have to have rational solutions instead

flawr

but not sure if it has been done: you could extend your challenge to arbitrary polynomials

with only integer solutions

@graffe that is not actually much more difficult, just a little bit more fluff

graffe

@flawr how do you get time just guessing as you said if it has integer solutions only?

DialFrost

@flawr good idea! :3

graffe

@flawr there are more of them

flawr

brb (in a minute)

DialFrost

14:15

Anyone know why objective C doesn't work on TIO?

flawr

@graffe do you know about the gershgorin circles?

My suggestion is making a challenge that has a slightly different focus

e.g: Input is an arbitrary polynomial with integer coefficients where all real solutions are integers too. And the output should be all the integer solutions.

That would make it trivial to reason about the correctness

and finding the solutinos itself would be relatively simple, but there would be many ways to approach it

graffe

@flawr what stops them trying all integers in the given range?

flawr

nothing, but they'd have to find the range themselves

or work with a methdo that works for all ranges

(hence it would have a different focus than your original proposal)

graffe

@flawr I just looked it up

@flawr ok

@flawr why do you ask?

flawr

with that theorem you can bound the range in which you have to search for solutions

so that would be one avenue to solve the proposed challenge

graffe

14:23

@flawr oh cool

Actually if I allow 40 bit integers maybe the original idea is ok

flawr

I'd go for arbitrary size integers:)

graffe

@flawr everyone complains when I do that!

Although I would love to

Their favourite esolang doesn't support it etc

flawr

right I know, but it would be most elegant:)

graffe

I agree!

Tell that to the downvoters

Neil

@graffe still easy, by the rational roots theorem, just need the prime factors of the first and last coefficient

PyGamer0

15:01

i am honestly annoyed by some of my github followers :p

how on earth am i related to hacking/termux?!

pxeger

@Ginger Looks like any swapping of two characters is corrected as long as it's unambiguous

Ginger

@pxeger neat

graffe

15:22

@Neil this sounds good to me

New Posts

16:34

0

Q: Print ascending proper fractions using integers up to the given input

User inputs an integer. Print out proper fractions using all integers up to the user's input, in ascending order. Rule 1: Eliminate equal fractions. Rule 2: Fractions should be in their simplest form. Rule 3: Use "/" as a fraction symbol and next line (\n or \r as convenient) as a separator betwe...

rational-numbers

graffe

17:31

@thejonymyster hi

I think the downvoters are being to mean to the nice fraction question

It looks clear to me

Neil

17:46

Python question:

I have two arrays, a and b

I want to select those elements from b corresponding to truthy elements from a

does [B for A, B in zip(a, b) if A]do what I want?

mathcat

18:03

So A=[1,0,0,1], B=[1,2,3,4] would return [1,4]?

Yeah, should do the job

Neil

thanks

flawr

18:23

@Neil In case you're using numpy arrays instead of lists, you can just B[A] (assuming A is boolean)

Neil

no, A is actually an array of strings

B is an array of the amount of left padding of each string

I want to know the minimum amount of padding of non-empty strings

emanresu A

21:22

@Neil ~~import jelly~~

Adám

21:38

@Neil That's a single symbol in APLs.

Sandbox Posts

23:05

0

A: Sandbox for Proposed Challenges

Abbreviate the inputted phrases Given a inputted string, replace all occurrences of " is", " are", " am", and " have" with "'s", "'re", and "'ve" respectively. Examples Input Output I am I'm She is She's The dog is The dog's I have a dog I've a dog I have been hurt I've been hurt ...

thejonymyster

23:27

@graffe its crazy how divided the votes are again. i like the problem, but ive been holding my upvote for a change in rule 3. it just doesnt make sense to me to restrict output that much

also i mentioned it in the comments, but wow i had no idea thats what a "proper fraction" was

@graffe importantly, there is the issue of it lacking a winning criterion, so it should probably be closed for now, but I definitely don't see why so many downvotes.

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