The Nineteenth Byte

Neil

00:21

@Adám haven't favicons always allowed transparent backgrounds?

New Posts

00:55

0

Q: Longest path between two nodes in DAG

Find the path that is the longest between any two nodes in a directed acyclic graph (DAG). Any number of nodes can be included in the path, but the edges must be moved in the right direction. The Longest Path Problem is the name of this problem, and it is NP-hard, which means that there is no kno...

Sandbox Posts

01:23

0

A: Sandbox for Proposed Challenges

Number Cliques code-golf number array statistics Your task is to create a program or function, that when given an input list of nonnegative integers of length \$l \ge 2\$ and a nonnegative integer \$c\$ where \$2 \le c \le l\$, group the list into \$c\$ "cliques." What this means is, the average ...

ATaco

CMC: Calculate the Standard Deviation of a list of values.

New Posts

01:56

0

Q: Busy Beaver Problwm

Create a program that takes the integers n and k as input and returns the smallest prime number with at least k distinct prime factors and a digital root of n. The sum of a number's digits is the digital root, and the process is repeated until a number with just one digit is obtained. 1+2+3 = 6 i...

code-golf oeis turing-machine

lyxal

02:59

Rate my lambda syntax: lambda n: n * 0

Unrelated String

vile

doesn't look anything like any lambda syntax i've ever seen

what kind of programming language even is this

lyxal

a dynamically typed, interpreted one

it also uses duck typing :p

Unrelated String

how does duck typing relate to chicken typing

lyxal

because snakes eat chicken?

Unrelated String

bingo

lyxal

03:05

n = 4
if n:
 print(4)

for some reason, this prints 0

no clue why

Unrelated String

slugs beat snakes

Bubbler

4 is 0

Unrelated String

so now you need a frog in there somewhere

lyxal

no clue why the u is highlighed blue when it should be a string colour

very strange behaviour

Steffan

huh you must have selected the wrong language

lyxal

03:10

I think so

Steffan

maybe that will fix it?

lyxal

Odd, I can't see that box anywhere

ATaco

@lyxal Jesus what alien language is this

lyxal

13 mins ago, by lyxal

a dynamically typed, interpreted one

ATaco

Inconceivable

lyxal

03:16

definitely not related to snakes

nothing to do with a popular praclang at all

totally not

ATaco

Ah yes, the Ekans programming language

lyxal

the language name totally doesn't rhyme with skython

ATaco

I suggest a new programming language derived from snakelang™ with hostility to the programmer in mind. I call it, Prion.

Unrelated String

yes

to borrow some ideas i jotted down 5 years ago, the only control constructs are while comprehensions and try ... except

ATaco

03:38

@UnrelatedString While is too powerful, allows instant not-running-of-code. do{}while() is much more annoying to work around.

user

03:57

I once started work on a language without any control constructs whatsoever

Everything was an object, including booleans, so you just had to monkey-patch the boolean class to add an if method, and then take advantage of dynamic dispatch to execute the thing you wanted

Had to abandon it because it was an object-oriented LISP that used {} written in Smalltalk with no first-class functions and that restriction ^, so very close to a tarpit

4

ATaco

My worst control-flow language was Maybe Later, of which control flow was handled soully by If Statements and When Statements.

user

You know it's cursed when souls get involved

ATaco

Ah yes, ~ATH

…Now I want a programming language in which the colour of code is syntactic. Requiring a custom editor, of course.

user

There was a joke language like that. Someone posted it here a while back iirc

It wasn't just the color but also italicization, bolding, underlining, font size, etc.

ATaco

04:13

Spin up there threads, Cyan Magenta Yellow, which splinter when the colour of the code 'splits', and waits when they're the same again and combines state. Black exectues on all three threads. Red executes on Magenta & Yellow, and so on.

emanresu A

There's Randall Munroe's X language

Which has actually been implemented

Unrelated String

@user i think it's from sigbovik?

Akiva Weinberger

04:38

Anyone wanna come up with a name for my fractal triangle thing?

ATaco

Just call it a Weinberger Triangle. Own it

lyxal

^

ATaco

Narcissism is how Mathematicians become immortal, Euclid...

Akiva Weinberger

@ATaco I'm down for that but I want at least one adjective

Like, the Weinberger shwoop-floop triangle

ATaco

Technically Fractal. Thus Weinberger Fractal Triangle.

(Not actually fractal)

lyxal

04:52

@ATaco some call it narcissism. I call it the inability to think of anything better :p

At least that's how I justify it :p

user

06:35

CMQ: Is it a good idea to have Rust-style memory management in a general purpose language that isn't really focused on low-level applications? Would it be a good idea to go halfway and have affine types as an option? Like Nim's sink parameters

@AkivaWeinberger Weinbergerian

Leaves you open for a whole lot of Weinbergerian shapes later on

Or Idris's uniqueness types

Akiva Weinberger

The combinatorics stuff I did in the comments there was not trivial

If I solve the other questions I asked, and if it turns out I'm the first to do so, I feel like I deserve to get my name attached to it

mousetail

07:17

Unfortunatly it's very unlikely, most everything is named after the second or third person who discovered it

Adám

07:39

ColorForth

colorForth is a programming language from the Forth language's creator, Charles H. Moore, developed in the 1990s. The language combines elements of Moore's earlier Forth systems and adds color as a way of indicating how words should be interpreted. Program text is tokenized as it is edited; the compiler operates on the tokenized form, so there is less work at compile-time. An idiosyncratic programming environment, the colors simplify Forth's semantics, speed compiling, and are said to aid Moore's own poor eyesight: colorForth uses different colors in its source code (replacing some of the punctuation...

@Neil Maybe the tools used to generate them didn't. Some certainly still don't.

mousetail

08:27

LDQ Preferred type casting syntax: (type) expr, expr as type or type(expr)?

pxeger

no special syntax, it should be a normal function call

ATaco

08:51

@mousetail For consideration, BrainChild uses the -> operator. (val -> type)

Neil

09:40

@pxeger I don't suppose you saw my previous message? for some reason Charcoal's CompressLZMA crashes the process on ATO (works fine locally and on TIO)

pxeger

Yeah I saw it but I haven't had much time to investigate

It gets SIGKILLed, which means either it ran out of resources (seems unlikely?) or had a segmentation fault

Sandbox Posts

10:57

0

A: Sandbox for Proposed Challenges

Play chess. You can't see the current board, and can only memory two bytes. Each turn, you're given your current state(initially 0) and opponent's move(a special value if first move in the game). You then output a list of [moves,state] pair, and the first valid one will get used. If no valid move...

Unrelated String

yeah my vote is also for casts to just not be syntax

casts in general are kinda icky; they make perfect sense when you're dealing with like integers of different widths and such but there's little else where explicit casts really feel sensible as their own thing

i feel like it should be all or nothing
like if you don't go full rust, then it goes from an actual correctness kind of feature to just an opt-in performance boost

though i guess depending on how convenient and pervasive the opt-in affine types are they could still offer similar levels of utility in a higher-level language

hmm

caird coinheringaahing

11:50

@RydwolfPrograms careful, we still have a few fridge nukes to use

lyxal

12:20

@cairdcoinheringaahing are you available for some 11'ing? We need Vyxal Bot to be unsuspended from chat - we had hyper temporarily suspend it because it was being annoying and Ginger wasn't around to fix the bot

but now Ginger is here, and the bot can be unsuspended

unsuspended. Definitely unsuspended

pxeger

12:42

@Neil it works fine on staging which makes me very suspicious

they should be running exactly the same version of code

Hmm, the server now won't boot...

New Posts

0

Q: Split some points

proposed by @Adám in chat Given an even number of finite points return a line \$y=mx+b\$ that evenly splits the points on both sides. Specs Take a list of points \$(x,y)\$, output a possible \$(m,b)\$ pair Half of the points should be true for \$y>mx+b\$, the other half should be true for \$y<mx...

math code-gof

mathcat

ato is down :/

mousetail

@pxeger @mathcat this might be related

mathcat

oh lol

pxeger

might be lol

should be back up in a few minutes

Neil

13:07

thanks for checking

The Thonnu

@mathcat you just created the [code-gof] tag!

lyxal

code-gof

or better yet coe-gof

mathcat

coe-go

lyxal

cg

mathcat

c

Neil

14:08

code-goof ?

mathcat

yes

Ginger

cleg-food

Rydwolf Programs

14:32

@Seggan Haskell and rSNBATWPL both do it

(and those two are definitely comparable in quality and thought-through-edness :p)

Oh no...rSNBATWPL 2 might be about to happen

I've been thinking

I've got a lot of ideas

And the last straw just fit in place

Neil

@pxeger thanks for the fix

mathcat

^ ty

Rydwolf Programs

14:56

The language shall be called CMOP

PyGamer0

ohno

Rydwolf Programs

Oh yes...I have just finished designing the type system and it's gonna be awesome

Ginger

oh no

Seggan

oh yes

@RydwolfPrograms you still havent released ur esolang despite promising us it "today" quite a few times :P

Rydwolf Programs

I know. I just really hate writing documentation and answers and stuff :/

I feel like I have a responsibility to show off just how cool it is, but doing that would require so much work

Sandbox Posts

15:56

0

A: Sandbox for Proposed Challenges

Opposite of string code-golf Your function must accept one string and return the opposite The opposite string is a string where all characters go in reverse order, all letters are replaced with the opposite mirror letter from the English alphabet and are changed in case, and all digits are replac...

Jacob

16:10

anyone know how to get seven rep

im at 993

Rydwolf Programs

Downvote one answer, receive one downvote and one upvote

You can also downvote two additional answers in place of receiving one downvote

I'd do it quickly since talking about your rep here when you're close to a milestone tends to get you mysterious upvotes :p

Ginger

16:28

@RydwolfPrograms not like we know anything about that, of course... :b

DLosc

17:10

CMC: graphical-output Draw a five-pointed star.

In technical terms, your output must be a 10-sided polygon in which every other interior angle is greater than 180 degrees. It has to be big enough to be visually recognizable as a five-pointed star. Everything else (colors, filled or not, the exact angles and lengths) is up to you. Printing a Unicode character is allowed but boring.

Aiden Chow

@Jacob well congrats, u r over 1k now!!

@DLosc me: pulling out Desmos as soon as i see graphical-output

DLosc

17:24

@DLosc Python 3, 62 bytes: from turtle import*;ht();exec("fd(9);rt(144);fd(9);lt(36);"*5)

which, ungolfed, is

import turtle
turtle.hideturtle()
for i in range(5):
    turtle.forward(9)
    turtle.right(144)
    turtle.forward(9)
    turtle.left(36)

Aiden Chow

@DLosc Desmos, 69 bytes:

l=[0...9]
k=180mod(n,2)-36n
A=∑_{n=1}^lcosk
B=∑_{n=1}^lsink
(A,B)

Try It On Desmos!

(Note: Desmos has to be set in degrees mode for this to work)

definitely golfable but this is what i initially thought of

I feel like the repeated summations should be golfable somehow, but idk

a shame that ∑_{n=1}^l(cosk,sink) doesnt work

Like goddamn smth like (1,0) + (2,0) works but when i put a point in a summation, nope, "Cannot sum a point" like literally stfu desmos, its one of my complaints of desmos, very annoying

DLosc

17:40

@AidenChow Cool! Looks like you only need l=[0...5] as a matter of fact (not that it saves bytes).

Does Desmos do polar coordinates well? I think that would be a helpful approach if possible.

Aiden Chow

@DLosc theres polar coords, ye, but i dont know enough about polar coords to work with them lol

u have to put it in form r=function of theta

theres also parametrics

DLosc

Hmm. But no way to plot a list of points in polar coords, like you can for a list of cartesian points?

Aiden Chow

@DLosc no, not that im aware of

DLosc

Too bad.

I supposed one could convert them to cartesian manually.

@AidenChow I have this, but why isn't it drawing lines between the points?

Aiden Chow

17:58

@DLosc click and hold on the dots next to the expression, and a menu should pop up. turn off points and turn on lines.

DLosc

@AidenChow Oh, interesting. I was trying to right-click but of course that didn't work.

That setting isn't part of the text you consider your Desmos program, right? Is it just considered a "free action" in golf to set the graph style?

Aiden Chow

@DLosc yea, im not sure what consensus is there on that tho. i just assume that it doesnt cost any bytes

DLosc

So that's 51 bytes:

l=[0...10]
t=36l
d=1+mod(l,2)
X=dcost
Y=dsint
(X,Y)

Aiden Chow

@DLosc bruh how tf does that work

DLosc

Oh actually, 43 bytes:

l=[0...10]
t=36l
d=1+mod(l,2)
(dcost,dsint)

Aiden Chow

18:04

(also t is kind of like a reserved variable for parametrics so its usually not a good idea to set it to a value)

DLosc

Oh whoops :D

Aiden Chow

@DLosc damn nice

tryna understand what u doing here lol

becuz i use summation to simulate tracing a star lol

DLosc

Let me know if you want a hint

Aiden Chow

oh wait its alternating between radius 1 and radius 2, thats smart

big brain

l4m2

2

A: Sandbox for Proposed Challenges

Base64 fixed point It can be proven that there's exactly one string of infinite length that remain same after base64 encoding Vm0wd2QyUXlVWGxWV0d4V1YwZ... Given \$n\$, output one of the \$n\$-th character the first \$n\$ characters The whole string code-golf sequence

DLosc

18:52

@DLosc Oh hey, -1 byte by using different angles: from turtle import*;ht();exec("fd(9);lt(24);bk(9);rt(96);"*5)

And 40 bytes in Desmos:

l=[0..10]
d=1+mod(l,2)
(dcos36l,dsin36l)

ATaco

20:29

This is definitely solvable with AutoHotkey by opening MsPaint and drawing a stat

Seggan

23:16

@RydwolfPrograms so ive got a problem

youve hooked me on rust

while imo kotlin is still the better language, rust is great for a bunch of things

fast compilation times are real noice

user

23:46

Uh

I’ve found rust to compile much slower than kotlin

Seggan

hrm, maybe its the bias from the gradle daemon stating

emanresu A

@DLosc 39 if you put the d after the parentheses

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