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3:07 PM
@GingerIndustries not true. it's 366.25 rotations per orbit
 
lol
 
Can someone read a SE answer in Python
@Neil No, I∕¹⁴⁶¹¦⁴
 
@Fmbalbuena definitely not 365.25
 
@GingerIndustries Moon looks okay, but there is one less star than IRL
 
@Fmbalbuena note that earth rotates once every 0.99727 days
 
3:10 PM
@Neil sorry
 
the other 0.00273 days is the amount of extra time it needs to face the sun again
(since its orbital position changed by about 1 degree so it has to turn another degree to face the sun again)
(on average)
 
I think I learned the basics of Charcoal
 
@PyGamer0 I made a bot that solves 2 out of your 3 ciphers
 
I'm just approximating
also I'm pretty sure the sim would get pissed if I used decimal points
 
3:28 PM
CMC: Output this array:
[[1 1 5 5 6 6 5]
 [4 4 3 3 2 2 1]
 [5 5 4 4 3 3 2]
 [5 5 4 4 3 3 2]
 [1 1 5 5 6 6 5]
 [4 4 3 3 2 2 1]]
 
print("""[[1 1 5 5 6 6 5]
 [4 4 3 3 2 2 1]
 [5 5 4 4 3 3 2]
 [5 5 4 4 3 3 2]
 [1 1 5 5 6 6 5]
 [4 4 3 3 2 2 1]]""")
 
(Bonus points if you figure out what it represents)
 
@DLosc this is numpy array
 
@hyper-neutrino That was quick ^_^
 
3:30 PM
@DLosc lol :P when reading through lists of numbers sometimes i just think of the musical notes in the back of my head and when i was reading through this i suddenly noticed that it wasn't just random noise :P
 
My first thought was a doubled magic square
 
@hyper-neutrino wow lol
 
@DLosc Jelly, 32 bytes: 4Rx2ḊU¶1,1,5,5,6,6,5;¢;¢‘¤$⁺s7ṁ6 (Try It Online!)
could probably be a lot better
 
@DLosc English, 15 bytes twinkle twinkle
 
3:48 PM
There's got to be a way to map over each row of a rank-2 array in BQN...
 
@PyGamer0 this is a nice challenge
More golfable?
 
Are decrypt this on-topic in TNB?
 
the third one
is veryhard
 
@taRadvylfsriksushilani When you think you're using a buzzword but you're off by 20 years
 
3:50 PM
I know, not a Caesar Ciphere
I'll try Vignere
 
@DLosc Yep, that's what the ˘ modifier is for
 
ok @mathcat here is a hint: both strings decrypt to the same string
 
@mathcat The program works, assuming the decoded string is a Caesar Cipher and not a Vignere code and if the original string has only printable Unicode characters
@PyGamer0 oh ok
 
@DLosc BQN, 33 bytes
 
@PyGamer0 to this is a nice challenge?
 
3:54 PM
@DLosc 31
 
@mathcat no the third one
 
@Adám Ah, nice
 
2 hours ago, by PyGamer0
Jan 23 at 9:06, by PyGamer0
CMC: Decrypt: 5xjkw roe!uuht#vareon#cog!sfihloh and 6xhlu ooi#wueu#sdrhon$eph vgeflpj
@mathcat ^^
 
@PyGamer0 No I meant does the third one also decrypt this is a nice challenge
 
@DLosc Save one more with 7↑˘ instead of ¯1↓˘
 
3:56 PM
@mathcat i guess so, i forgot
 
@Adám 29
 
@DLosc 27
 
Oh, nice
 
@PyGamer0 not able to solve :/
 
@DLosc Does the 6 mean your pinky moves to the right?
 
4:06 PM
CMC: Decrypt -152228244-192-21668212228220-200-208-21621268220-192-216212-232-192212-200
 
@Adám 26
 
@DLosc 24 as direct translation from APL's 1 character shorter 7↑⍤1⍪⍨3 8⍴2/1 5 6,,⍨⌽⍳5
 
@user ... I think so? I'd have to try it to be sure. Most of what I know about the piano is self-taught, so I probably don't use the "correct" finger placements.
 
It can just be interpreted as the numbers of the notes within the octave, irrespective of piano fingering
 
@Adám I don't think that's the right pattern. The lines should go ABCCAB, not ABCABC
 
4:11 PM
so it doesn't really matter that you only have 5 fingers per hand
 
@user i think so
 
@DLosc Oops, I forgot a reversal.
25 then.
 
@Adám 24
 
Ninja'd.
 
Great minds etc etc
 
4:14 PM
what does the explain button do?
 
but fools never differ!
 
@BgilMidol Generates a graph of the structure of your code
Click Explain and then click Run
 
ooh
still cant understand it
 
I don't really think that diagram explains much, though.
 
@BgilMidol Yeah, it takes a little work to figure out. I'd recommend starting with a simple program and working up from there. It also helps if you already understand BQN syntax.
 
4:16 PM
tutorial link?
is it infix?
 
7 first numbers from each row of concatenation-with-reverse of 3 rows 8 columns filled with duplicated numbers of 1 5 6 prepended to the self-concatenation of 5 minus the 5 first integers (0…4)
 
@Adám Wait, this still isn't right. Now it's ABCCBA, but it should be ABCCAB.
 
Oh, right. Oops.
I should know better. I can play this on the violin.
 
You play violin?
 
I used to. Until I lost mine ;-(
 
4:19 PM
How do you lose a violin
 
@BgilMidol It is infix/prefix.
 
so it can be infix or prefix? cool
 
@pxeger You run away from the place where it is, without carrying capacity for bringing it ;-)
 
oh
 
4:20 PM
@BgilMidol No, it is both. Think of what − does in traditional mathematical notation: both 10-3 and −5
Every APL (BQN is an APL dialect/derivative) function can be like that.
 
I think, in classification of programming languages, we'd just call that "infix."
The prefix/postfix/infix distinction mainly applies to functions/operators/whatever-you-call-them that take two arguments.
 
4:38 PM
@Adám Trying to fix this approach, the best I've found is 28 (several different ways), but it feels like it ought to be golfable.
Trouble is, I don't think there's a modifier that does ⊢𝔽⊣𝔾⊢
 
@DLosc No but that's ⊢𝔽𝔾
 
@Adám Hm, okay. So 27
 
@DLosc whats the visual difference between and *?
(aside the position)
 
is it weird to anyone else that ctrl+x (cut) doesnt actually copy anything to the clipboard if it fails to delete anything?
 
4:51 PM
@BgilMidol In some fonts, none.
 
like if you were to select my message and try to cut and paste it, it wouldnt work
id think itd just work the same as ctrl+c in that case
but it does not
 
Huh, I thought that worked as Ctrl+C.
 
I always just assumed it had, but alas
 
because Ctrl+X doesn't exist at all for non-editable text I guess
makes sense to me, although I've never had a problem with it
 
right its nothing that's a serious issue but like, it could cause some data loss to someone unprepared
 
5:03 PM
@thejonymyster What's the scenario that would cause data loss? If it fails to delete anything, the text you were trying to copy is still there, right?
 
@thejonymyster Yeah, I've been annoyed at the same thing hapepening before
 
i guess itd only be an issue if you were irresponsible with your clipboard anyway
like you could lose it if you tried to ctrl+x, then closed the content
thinking it was in your clipboard
but imo you should always check anyway
for various reasons
 
@thejonymyster Which, to be fair, is all too easy to do. I wish the clipboard had a history of the last several things you copied.
 
im p sure some do
 
@DLosc same
 
5:05 PM
The Chrome OS one does
 
@taRadvylfsriksushilani ooh nice
 
Search + V opens a dialog with the last five things you copied
 
@DLosc Windows does.
 
@Adám where?
 
@Adám ... Tell me more.
 
5:06 PM
Windows+v
 
it's like, the last 12 copies
 
5
 
You can even pin things you often want.
 
Lol, it's opt-in. "Can't show history. Turn it on?"
 
@Adám oooh
 
5:08 PM
Oh that is niiice
 
@DLosc Fair enough. It could contain potentially sensitive info.
 
Yeah, true
So if you know it's there (because you turned it on intentionally), you can go in and delete the sensitive info; but if you don't know it's there, it's better if the info gets overwritten as soon as you copy something else.
@Adám BRB, pinning all the non-ASCII chat faces
 
lol
 
@taRadvylfsriksushilani only last 5?
I think it's the whole history
 
@mathcat windows is like last 12
 
5:12 PM
before shutdown
eg. mine's 27 now
 
I've figured out why the planets jump around!
 
@DLosc You can also use windows+. to bring up a menu of emojis, symbols, and various non-ascii chat faces
 
on one single frame right at the end of the orbit cycle, my shitty math does something that makes the position go to NaN. this of course breaks the camera system I'm setting up.
 
@AaroneousMiller I just wish there was a way to customise that.
 
win+╧ opens up the apl keyboard
 
5:17 PM
@Adám sad APLer noises
 
@AaroneousMiller New favorite: ᓚᘏᗢ
 
Bout to drop P2 finale of SE Nitro: The comic in Par for the Course
 
has ato.pxeger.com suddenly stopped working for anyone else?
huh it magically fixed itself
must have just been a transient network issue
 
5:33 PM
@taRadvylfsriksushilani fun
 
5:45 PM
@pxeger Nope, I'm using it right now
 
5:56 PM
I found a solution for a halting problem
 
6:10 PM
@Fmbalbuena is it [this](rick roll link)
 
@thejonymyster no, this is not rickroll
 
what is your proof, then?
 
> a halting problem
 
sus
 
ah, now im curious
see but that means it isnt outright lying, there could be something interesting here
 
6:13 PM
_=>{return;} halts. Just proved a halting problem :p
 
Transpile X to brainfuck code, execute. If this has length^9999 steps, print "This doesn't halt", else print "Halts"
where n is length.
 
you really dont think someone can make a program with length^9999 steps?
 
@taRadvylfsriksushilani why?
 
You can easily make a faster growing function than n^9999
And then loop that many times
 
6:14 PM
I think Rayo(n^100) is good.
 
Nope, there's always a faster growing function
 
any finite number will not work
 
No matter what ridiculously fast growing function f you choose, f(f(x)) will always be ridiculously much larger
 
I think BFBIGGESTNUMBERTHATCANBEGENERATED(n+1) is very good.
 
it's suitable for most use cases, sure, thats what things like the call stack are for
but it doesnt solve the halting problem
 
6:16 PM
Proving the biggest number that can be generated in n bytes of brainfuck is just as hard as the halting problem
 
i think i will make python code (with infinite recursion and B = BFBIGGESTNUMBERTHATCANBEGENERATED)
 
best of luck to you
wait, is C sufficiently "not TC" enough to solve the halting problem for it
 
C is not TC, no
Due to the size limitations of pointers
But solving the halting problem for it would be very, very time consuming
 
ah lol
CMC: solve the halting problem for C
 
6:20 PM
C is TC, proof: use char *
 
And it wouldn't be very useful anyway. If you could solve the halting problem, you could trivially solve basically all of math. If you could solve the halting problem for C, you just...can tell if a C program halts :p
 
give up, i can't solve halting problem
 
Don't worry, it's not you, it's the fact that it's provably impossible to solve
 
No matter how smart anyone is, no matter how much computational power they have, it is impossible to solve the halting problem
 
6:22 PM
Well ...
 
@WheatWizard ?
 
If you have computational power that exceeds a Turing machine you may be able to.
For example ITTMs can solve the TM halting problem.
 
Well, I mean classical ordinary good old turing machine computational power
 
I think TM can solve the halting problem.
 
I wonder if you can solve the halting problem for Splinter
Which is a PDA
 
6:23 PM
Ginger's 3rd Law of SE: There's always more to the answer then meets the eye
 
@taRadvylfsriksushilani no of course, it'd just be fun to say you did it yknow
 
(Proved by ais, obviously)
 
CMC: Solve the halting problem
 
@Fmbalbuena can i use an esolang without an interpreter
 
6:25 PM
@thejonymyster you must use interpreter
or Flag NAA
 
docker run --supertask turing-machine:alpine
@Fmbalbuena That would be a mod flag, not NAA. NAA shouldn't be used for invalid answers
 
Deadfish~ Can know if the program of Deadfish~ Halts
just io
 
@Fmbalbuena anybody want to help me write an Español interpreter then
 
@thejonymyster Nécésitás ácéntós?
 
6:30 PM
0
Q: Infinite-Time Busy Beaver

Binary198An infinite time Turing machine is a generalization of a Turing machine to infinite computation lengths. It has three tapes: two of them are blank initially, and the other one contains the input to the machine. ITTMs have a particular state known as a limit state. At each step, At each step, the ...

 
This time with some weird american nationalism and conspiracy theories thrown in
Because why the heck not
 
> Halting Problem is impossible so this is not possible to solve
 
i dont think thats what that question is asking
 
@Fmbalbuena too easy
$sudo se-nitro halting-problem -hack
 
sudo hack mathcat remove se-nitro
 
6:33 PM
doesn't work
I'm staff
 
sudo remove user mathcat
sorry
 
sudo wudo
 
sudo staff add Fmbalbuena
 
@mathcat $sudo --se-nitro disable disable this removec | se-nitro halting --solve
 
sudo hack mathcat remove se-nitro
 
6:34 PM
wumbo
 
sudo remove user mathcat
 
@Fmbalbuena You need 1M rep and Se Nitro for that
 
sudo staff remove mathcat
@mathcat ok
sudo non-senitro add 1M rep
sudo staff add Fmbalbuena
 
@Fmbalbuena I am staff
 
sudo staff remove mathcat
sudo hack mathcat remove se-nitro
sudo remove user mathcat
sudo change fmbalbuena status gtg
 
6:36 PM
disable console
 
sudo remove --sudo
 
sudon't
7
 
Folks, let's try to cut the noise level down a bit.
 
@Adám idea: make one of these things except it monitors how many messages are being sent
 
@GingerIndustries I'll use this against my kids.
 
6:49 PM
@Adám what have I done
 
Me a favour.
 
7:06 PM
0
Q: Count count count

AZTECCODescription You have a list of integers and start counting from the first term to the next and continue from that to the next and so on.. How many times have you counted? For example given [ 2, 5, 3, 8 ] you start at 2 and count to 5 -> 3 4 5 (3 times) then from 5.. 4 3 (2 times) and finally 4 5...

0
Q: Print a NxN integer involute

Cool guyGiven an integer \$N\$, you must print a \$N*N\$ integer involute with the numbers increasing in a clockwise rotation. You can start with either 0 or 1 at the top right, increasing as you move towards the centre. Examples Input => 1 Output => 0 Input => 2 Output => 0 1 3 2 Input => 5 Output =>...

 
@taRadvylfsriksushilani found the GH issue
it's a sight to behold
 
@NewPosts So this is interesting--I'm looking for dupe targets and the closest I've found is this, which is tagged and closed as "Lacks winning criterion"
 
7:26 PM
CMQ: What is the shortest python prime checker?
 
@BgilMidol Probably import sympy;sympy.isprime
 
Probably import zqe
Or some package that when imported reads from stdin, checks if prrime and outptus
 
How to get all combinations of 1 to n where each number is prime and the length of the combination is 2?
 
7:46 PM
Cursed idea: Electric piano but the keys move when it plays
 
CMC: Given a string, shift every character's ASCII codepoint evenly by every possible number, if all shifted characters should be printable (>=32, <=126).
 
8:39 PM
0
Q: JavaScript confetti splash

ubershmekelCreate something like https://www.kirilv.com/canvas-confetti/. See example: function pop() { confetti({ particleCount: 100, spread: 70, origin: { y: 0.6 } }); } <script src="https://cdn.jsdelivr.net/npm/canvas-confetti@1.4.0/dist/confetti.browser.min.js"></script> <button onc...

 
@mathcat "evenly by every possible number" please elaborate lol
also i dunno if anyone would be keeping track of this but:
CMQ: What's the longest a challenge has gone unanswered before receiving an answer? besides cgol tetris since that one probably didnt have answers for one million years due to being off topic xd
 
this is theoretically not hard to pull up with SEDE but do you mean longest before receiving any answer or longest gap between post date and earliest non-deleted answer date?
 
oh good point
 
Hyper would you mind nuking that
(Well, vtc hammering)
 
i didnt notice the newposts message i was like wtf did i do wrong lol
@hyper-neutrino probably non-deleted that makes more sense
CMQ revised: longest gap between challenge post date and earliest non-deleted answer date? besides cgol tetris
oops wrong reply
sorry mathcat
I was just pondering the unanswered questions that aren't closed, wondering if there's something wrong with them or if they're just like, really hard but otherwise valid
made me wonder how long a really hard one has been up seeming impossible til someone came up with something
 
8:52 PM
0
A: Sandbox for Proposed Challenges

Blackhole927The nth eights challenge: Write a program that takes 2 inputs: the amount of eights, and the number to try to solve. The program then has to put operators in between the eights so when the newly created equation is calculated, it equals the number it was trying to solve. You can use the following...

 
are (paper-puzzle)-solvers interesting questions or do people not care lol
 
9:07 PM
0
A: Sandbox for Proposed Challenges

Blackhole927Nth Eights Challenge Inputs: There are 2 inputs: The amount of eights to be used in the calculation, and the number to solve for. What to solve: The program needs to insert operators in between each eight, so when the newly created equation is calculated, the answer is the number that was trying ...

 
9:26 PM
@thejonymyster There've been quite a few from 2016 or before that were only solved recently
 
@taRadvylfsriksushilani When's the next chapter of SE Nitro coming out?
 
Probably not until tomorrow
 
I've got some frames drawn, but they'll be for like...C4 of P3
 
 
2 hours later…
11:08 PM
@mathcat no, it was made by AI
As if I'd be able to draw anything that sophisticated
The best I can muster is turning 1 + 1 into a window for a bad TNB joke
 
@lyxal I commented your last video
 
Interesting...TIL my school district blocks boardgames stack exchange, and none of the rest
 
@Adám when you say 1 + 1 = 2?
 
11:42 PM
what a horrible school district
beans are a universal right
 
@lyxal nope, blocks boardgames stack exchange, and none of the rest = beans
 
it's almost like that's the joke
 
@taRadvylfsriksushilani maybe because it has games in the name
 
Yeah, probably
 
11:58 PM
@lyxal ಠ_ಠ
actually, that doesn't cut it
 

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