The Nineteenth Byte

ATaco

12:00 AM

There are dozens of us!

rydwolf

No error-carried-forward in a chemistry class is so evil

UTC-midnight dammit

lyxal

I love utc midnight

best time of day

rydwolf

Getting a half dozen questions wrong 'cause you got one number wrong four subproblems ago is so lovely

Bbrk24

Yeah, I was always graded on "did you do part 2 right given the answer to part 1"

Unrelated String

^

rydwolf

12:10 AM

At least in this case the last subproblem doesn't seem to depend on the first one. Not quite sure it's a better designed question overall tho:

See y'all next week when we're given the delta-H of jet fuel

(four days late for the joke)

Bbrk24

flashback to high school chem, I do not miss that

rydwolf

I love stoich

We've been stuck in thermo hell all semester so far

Unrelated String

Stoich was like the one part of HS chem that didn't kill me

rydwolf

I never thought I'd cry tears of joy at seeing a chemical formula written on a whiteboard

but the few times it actually came back to chemistry shit I was so relieved

whoever invented thermodynamics needs to undergo a few reactions at constant pressure

(or maybe my prof just sucks at explaining it which it definitely is)

New Posts

0

Q: Not great at regexs. Trying to code-golf this beast of a regex WITHOUT using string replacement (for G-Zip purposes)

Here it is: ^(?:(?:(?:(\d+(?:\.\d+)?)?(?::|\.|,))?(\d+)?(?::|\.|,))?(\d+(?:\.\d+)?)?(?:(?:\.|:|,)(\d+(?:\.\d+)?)?)?)?(?:,|,(?:(?:(\d+(?:\.\d+)?)?(?::|\.|,))?(\d+(?:\.\d+)?)?(?::|\.|,))?(\d+(?:\.\d+)?)?(?:(?:\.|:|,)(\d+(?:\.\d+)?)?)?)?$ What am I doing: Matching any ranged timestamp (HH:MM:SS:MS,...

regular-expression

emanresu A

1:21 AM

I was thinking about doing a "print 4 billion if statements" challenge - i.e. output code that's semantically equivalent to if(input == 0) print('even'); if(input == 1) print('odd') etc until if(input == 4294967295) print('odd'), however I'm not sure if there's an objective way to define that or if I should just have one predefined string

Unrelated String

Yeah, I feel like semantically equivalent w.r.t. your intent with the challenge would be more or less unobservable for code the whole point of which is semantic equivalence to something much simpler

rydwolf

~~you could make it observable through precise power consumption differences~~

Unrelated String

Maybe require, like, semantic equivalence + each number in the range appears within the code? Which might rule out some fun esolang-targeting stuff but who knows

And of course would also very much invite outputting a modulo and having all the numbers in there as dead code :P

(which probably would be shorter to generate in a lot of cases since there's less to interpolate, don't have to alternate outputs, etc.)

rydwolf

Maybe you could require that it's possible to split the program into 4 billion snippets which each output only for one input, and do so correctly

That should allow output in most languages, except some suuper esoteric langs

ATaco

Output must be provably reducible, such that the code can be cropped to support only a sub-range of inputs?

rydwolf

1:29 AM

You'd probably need to add a rule allowing prefix/suffix code to be kept but yeah

ATaco

Aye, to allow for something like

if (i==1)
    parity = 1
if (i==2)
    parity = 0
...
print(parity ? "odd" : "even")

rydwolf

or even just like, I/O and boilerplate code yeah

ATaco

Gotta make sure you golf your 4 billion if statements.

That said, what's stopping you from doing:

i = read()
function p(n){
    if (n == i) {
        if (n%2==0)
            print("even")
        else
            print("odd")
    }
}
p(0)
p(1)
p(2)
...

ATaco

1:54 AM

CMC:* Approximate 8.

Unrelated String

2:06 AM

Jelly, 8 bytes: 9RUƬUḌ÷/

Feel like there ought to be some shorter way to pair the reverse range with its range but I keep forgetting Ṛ doesn't rangify :(

...at least this is an interesting 9-byter: ⁵ŒḄ⁵_o”÷V

9x€2j@ƒ”÷V for 10 is only disturbing in that I thought it was promising :P

ATaco

I wonder if there's any languages that allow 9..1/1..9

Unrelated String

2:24 AM

Haskell can do read['9','8'..'1']/read['1'..'9'] I guess :P

Much longer than writing the literals out, granted

emanresu A

@rydwolf That's probably a good way to do it yeah

Sandbox Posts

3:58 AM

0

A: Sandbox for Proposed Challenges

Print 4 billion if statements Recently (okay, December 2023, I'm a little late) there's been a meme going around about a program checking if a 32-bit signed integer is even or odd using four billion if statements: if num == 0: print("even") if num == 1: print("odd") if num == 2: print("...

lyxal

5:27 AM

If you don't care, why bother mentioning it?

Redz

5:40 AM

average sign

The Empty String Photographer

6:27 AM

@ATaco print(123456789/987654321) is likely the shortest way in python

___

CMegaC: Print a political opinion that every single person in the whole entire world agrees with.

Standard loopholes apply

So don’t interpret the challenge too literally, ok?

Themoonisacheese

7:02 AM

@TheEmptyStringPhotographer print("i'm just a silly litlle girl")

emanresu A

:3

8

Themoonisacheese

:3

Unrelated String

:3

Redz

:3

Themoonisacheese

:3 and :3-related activities

Redz

7:12 AM

I've been Gingered

emanresu A

meow

emanresu A

8:24 AM

@TheEmptyStringPhotographer 109739369/13717421

Unrelated String

@rydwolf There's someone on the other side of my archaeology class who I'm just constantly in envy of the style of... I had some mixed feelings when I actually happened to walk close enough to read what was on one of her shirts LMAO

lyxal

10:53 AM

mfw when the Wikipedia app keeps suggesting articles related to gambling

New Posts

11:17 AM

My favourite group when playing Connections daily is yellow group. No skill points for guessing why.

Bbrk24

I was able to view the question but when I tried to flag it, I got a 404

that’s a new one

lyxal

11:35 AM

@NewPosts based Connections Bot enjoyer

New Posts

12:03 PM

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Themoonisacheese

@NewPosts just the tip

Ginger

ಠ⁠_⁠ಠ

can a RO nuke this please :3c

lyxal

12:22 PM

@Ginger is that what you had in mind?

Themoonisacheese

sus amogus

why is he smokin a fat blunt tho

Ginger

@lyxal yes

lyxal

Sussy MOGUS

l4m2

1:17 PM

CMC Fewest types of char. mcfunction to reach end poem

Themoonisacheese

1:43 PM

oh that's fun

nevermind it's actually quite straightforwards

73 bytes: `execute at @s run setblock ~ ~ ~ 119
execute at @s run setblock ~ ~ ~ 119`

s/@s/@a/g if you want to not have to run it as the player

Ginger

2:19 PM

CMQ: what Unicode glyph would you use to represent EOF? (cc @lyxal, I'm trying to figure out how to show that a structure is closed by EOF)

Themoonisacheese

i mean

there's only one correct answer

ඞ

Ginger

:3c

lyxal

@Ginger ␄

end of transmission

Ginger

alrighty

lyxal

whatever you do, don't look up the name for 걑 and append a t

3

worst mistake of my life

Themoonisacheese

2:25 PM

windows 11 sticking out its 걑 for the gatezzler

Unrelated String

3:05 PM

rydwolf

3:17 PM

god i hate security questions

Unrelated String

Preach

rydwolf

they're either things literally everyone could find out about me, or things I don't even know about myself

Unrelated String

^

rydwolf

Unrelated String

Always shit like favorite things or basic biographical information

YIKES

rydwolf

3:19 PM

today in what the hell is the air force doing

guest4308

@lyxal why not ␃ (end of text) or ␜ (file separator)? that seems more relevant than transmission

rydwolf

EOT is the traditional EOF

It's what Ctrl+D is on UNIX/Linux, for example

The four weird separators (FS/GS/RS/US) were used on some super obscure machines IIRC, but semantically using FS and none of the others would be odd

The Empty String Photographer

3:43 PM

@rydwolf the answer is CMU

rydwolf

@TheEmptyStringPhotographer nah it turned out to be your mom's house

The Empty String Photographer

@lyxal the worst mistake of your life would be the last mistake, actually

Unrelated String

Peacefully dying of old age, surrounded by loved ones... how could I be stupid enough to let this happen 🤦‍♀️

rydwolf

not necessarily, you can make a terrib...^ lol

Unrelated String

And yeah before I realized I could be quippy about it I was going to say something like that

rydwolf

3:46 PM

although dying oldly and peacefully kinda is a mistake IMO, better to go out with a bang the day before you turn 80

Unrelated String

true LMAO

Ginger

I need a name for "syntactic component of a language" that isn't "element" or "syntax feature", because both of those names have a different meaning in the context of Vyxal and naming variables thing isn't working :p

rydwolf

I fully plan to get shot robbing a bank at like 97

(googles "do hiring managers know about TNB")

Ginger

my favorite react component, the ThingCard

The Empty String Photographer

@Ginger parsed segment?

Ginger

3:51 PM

too wordy

The Empty String Photographer

syntactic feature is more wordy though, at a score of 4

Ginger

that's the problem

The Empty String Photographer

@Themoonisacheese I disagree. You’re probably an adult since you’re working.

0

A: Sandbox for Proposed Challenges

This algebraic idiot! You want to prove to some mathematicians that it is possible that \$x=x+1\$. Luckily, they’re not so good at maths, so you can just exponentiate both sides. Plain challenge Output the real and imaginary parts of one of the possible values of \$x\$, where $$x^n - (x+1)^n = 0...

Feedback?

user

5:10 PM

@Ginger parse tree?

Ginger

it's not a tree though

user

pars potted plant

Unrelated String

Constituent?

I was going to ask like 2 hours ago to confirm that you meant "things that are like kind of analogous to linguistic constituents" to clarify why "token" wouldn't work, but it somehow didn't occur to me to actually suggest that

rydwolf

5:33 PM

I thought people were joking when they said the CS buildings have showers but nope lmao

Unrelated String

LMAO WHAT

Unrelated String

5:50 PM

@rydwolf So they finally got back about my regrade request... the text of it complained that this was apparently on homework we did already and insisted that no credit would be awarded, but they also changed the grade anyways :P

Also looking at said homework, it literally wasn't

There is one question about most significant byte on the homework and the number in question is 16 bits

Unrelated String

6:01 PM

Makes me really want to look into what it takes to be a TA for one of these classes

rydwolf

6:14 PM

tfw you get a management position internship offer from the company that fired you

Unrelated String

pfff

rydwolf

I guess they didn't update their email lists lol

Unrelated String

6:32 PM

Honestly I could see them seeing it as unnecessary

They probably figure anyone they fired wouldn't want to take the offer, and further screening might determine if the original firing was in error or due to temporary circumstances or something

But if it's an offer that you just take it and they immediately let you in then yeah you'd reallly think they

'd want to not do that

If the firing was for disciplinary reasons at least

New Posts

6:54 PM

0

Q: Smallest prime q such that concatenation (p+q)"q is a prime

Let p, q, and c := (p + q)"q (where " denotes concatenation) be positive integers such that p and c are primes and q is the smallest prime such that c is prime. Such a prime triple (p, q, (p + q)"q) is for example (9721, 101, 9822101). In natural order, the results start 3, 7, 3, 3, 19, 3, 31, .....

code-golf sequence primes

Seggan

7:27 PM

@Bbrk24 yeah but could a candidate really get any worse than trump

i feel like MAGA republicans are simply a vocal minority that somehow steered the party

@ATaco this is so true

New Posts

0

Q: Count squares in my pi approximation

One way to approximate π is the following: Start by drawing a 2x2 square with a quarter-circle in it. Then, the area of the quarter-circle is π. We can approximate this area by filling it with squares. To start, we divide the square into four squares. Only one of these is fully inside the circle...

code-golf sequence integer pi

emanresu A

Any feedback on whether this is distinct enough from this?

@NewPosts It's nice knowing that there can't be a simple numeric formula for this because pi's transcendental

Unrelated String

...really, really good question

Seggan

7:45 PM

@emanresuA pi=s/d :P

skill issues

(/s)

Unrelated String

My gut says it is distinct enough, since it seems like some or most solutions should do meaningfully different work with having to put specific characters on spaces instead of just a binary matrix, but looking at the solutions maybe not

...Honestly, one way to make it more distinct might be laxer input to match the stricter output :P

It seems like a lot of what the original's solutions spend a lot of effort on is processing the directions

Oh wait you do already allow reordering

Nice

emanresu A

8:08 PM

I could go all the way and allow e.g. [[1, 1], [-1, 0]] sort of thing

Unrelated String

That is what I was originally thinking too

Restricting it to reordering might still lead to some fun/creative translations but that could also still be, like, chameleon challenge territory

emanresu A

Aight I've allowed that

... I feel like I've got a lot more perfectionistic on challenge writing over the last few years

... and my most-voted challenge is still one that I wrote when I was, like, five

Seggan

~~wait isnt that illegal~~

emanresu A

5 ≈ 13

Unrelated String

8:51 PM

She just waited 8 years to post it

It's that simple

rydwolf

Few know this but the 13-years-old requirement is in dog years

lyxal

10:41 PM

mfw the js brainrot is real and I use let in a language that does not have let at all (it has val and var)

att

condolences

rydwolf

let is hardly a JS thing tbf

It only got added decades after var had existed

lyxal

If I hadn't been using js for uni assignments for the last 5 months I wouldn't even think to use let :p

Unrelated String

🫂

lyxal

Gotta be on that MERN grind

It's a wonder I haven't tried to do things like useState or router.get("/something", async (req, res) => {}); elsewhere yet

Best thing I discovered about react though is that you can hide the error overlay with css

Very good for live demonstrations and assignment submissions

Also, don't think this was mentioned here,

New StackExchange maintenance just dropped. Like probably a few hours ago I think

Unrelated String

11:11 PM

Site was also in read only like this morning

lyxal

It started at 9pm utc

So probably more like a few hours ago

Bbrk24

11:33 PM

@lyxal I keep trying to use it in Python

But I think that's more Swift than JS

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