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00:46
good news! I discovered ü! bad news, ¸¯‚s`›iR}‚øü« is still 1 byte longer than multiplying and prime factorisation
Which challenge is this? (Also, which language is that?)
I thought that encoding was Win-1252, But ¯ suggests otherwise.
(maybe 05AB1E? idk)
@Neil ^^^
yeah, 05AB1E
3
A: Writing rational numbers as ratio of factorials of primes

Neil05AB1E, 54 53 48 46 40 35 bytes ¯D‚[D!P¹*D¿÷Z#Ó€gZ<Ø1‚s`›iR}sP*Ò]sR Try it online! This feels somewhat long. Edit: Saved 2 bytes thanks to @ASCII-only. Saved 1 byte thanks to @Emigna. Explanation: ¯D‚ Push a list of two empty lists to form the output [ Begin an infinite loop D! ...

I still feel that appending the prime to the appropriate list should be shorter
00:55
That challenge is completely beyond my comprehension.
01:06
I can't see how to solve that without solving the Golbach's conjecture...
Oh nvm
01:21
Git Lost: A bot that tweets every time someone swears in a github commit.
> Nerfs FUCKING BEARS. (#3586)
Makes me want to know the context for this commit message.
> fixing tim's fuck ups somemore
Sounds about right
1 hour left for me...
@Pavel Why don't they show what repos they were from? Is it to protect people's privacy? Do they realize it's only a matter of time until somebody makes another version that does?
It probably gets less funny with context.
Some things are best left without.
2
(such as almost all starred messages)
Exactly.
01:33
Maybe I'm not seeing it but that message doesn't make any sense without context, humorous or otherwise.
It's funny out of context, if you know the context.
If somebody saw that on the starboard and clicked it, they would realize the context
Uh, huh..
@Pavel oh dear that burning next cube
I used to have a next station
<-- doesn't know what a NeXT is
NeXT (later NeXT Computer and NeXT Software) was an American computer and software company founded in 1985 by Apple Computer co-founder Steve Jobs, based in Redwood City, California, that developed and manufactured a series of computer workstations intended for the higher education and business markets. NeXT was founded by Jobs after he left Apple, along with several co-workers. NeXT introduced the first NeXT Computer in 1988, and the smaller NeXTstation in 1990. The NeXT computers experienced relatively limited sales, with estimates of about 50,000 units shipped in total. Nevertheless, the...
aka the place steve jobs went when he left apple
the cube:
The NeXTcube was a high-end workstation computer developed, manufactured, and sold by NeXT from 1990 until 1993. It superseded the original NeXT Computer workstation and is housed in a similar cube-shaped magnesium enclosure. The workstation runs the NeXTSTEP operating system and was launched with a US$10,000 list price. == Hardware == The NeXTcube was the successor to the original NeXT Computer. It differs from its predecessor in having a 25 MHz 68040 processor, larger hard disks in place of the magneto-optical drive, and an optional floppy disk drive. A 33 MHz NeXTcube Turbo was produced later...
the station:
NeXTstation is a high-end workstation computer developed, manufactured and sold by NeXT from 1990 until 1993. It runs the NeXTSTEP operating system. The NeXTstation was released as a more affordable alternative to the NeXTcube at about US$4,995 or about half the price. Several models were produced, including the NeXTstation (25 MHz), NeXTstation Turbo (33 MHz), NeXTstation Color (25 MHz) and NeXTstation Turbo Color (33 MHz). In total, NeXT sold about 50,000 computers (not including sales to government organizations), making the NeXTstation a rarity today. The NeXTstation originally shipped with...
also they brought us wonderful things like objective c
or rather they popularized it
basically all the RND that went into NextStep got put into making OS X when Apple bought Next
01:51
> popularized
Popularized, potentially, but they weren't designers of it.
11 mins ago, by quartata
or rather they popularized it
> >In 1988, NeXT licensed Objective-C from StepStone
Just confirming.
Objective-C is a general-purpose, object-oriented programming language that adds Smalltalk-style messaging to the C programming language. It was the main programming language used by Apple for the OS X and iOS operating systems, and their respective application programming interfaces (APIs) Cocoa and Cocoa Touch prior to the introduction of Swift. The programming language Objective-C was originally developed in the early 1980s. It was selected as the main language used by NeXT for its NeXTSTEP operating system, from which OS X and iOS are derived. Portable Objective-C programs that do not use the...
They even have a section in the wikipedia article
(Which that's a link to)
They're also the reason GCC was extended to support Objective-C
Is Objective-C good?
Should I bother learning it?
01:53
Well it's like C but with more.
Is Oeis challenge rip :(
That describes C++ also.
@HyperNeutrino is Oeis challenge rip
> What you need to know: Objective-C is a strict superset of C
@Pavel It's only useful if you're working on OS X really
01:54
C++ isn't a perfect superset
Objective-C can be used on other platforms but you can use C++ easier
Still working on it, but I've encountered a major bug. Once that bug is fixed, it should be good to go for stage 3/3 and assuming Misha was right, should be finished
If anyone were to learn plain C, I'd suggest they learn Objective-C instead.
Major difference between C and C++: the __cplusplus macro is set in C++.
01:55
C++ is not a superset of C
Especially seeming as the compiler anyone uses for it is most likely going to be GCC (If it's not clang), so you're going to be using it anyway :P
Pls
don't let Oeis die
How long u hav
@HusnainRaza wait
30 minutes
your parent site is one of those edX SE sites?
01:56
what?
I didn't know they still did that
CS50
my parent!
?
Parent site.
The SE site your account is tied to.
parent site, click on your image in the upper right
01:57
hyper u need any help?
Harvard's CS50 course, or something.
cs50's existance confuses me.
There's been a couple in the past
(The SE, not the course)
Jan 9 at 4:33, by quartata

 cs169-1x-irc

A Chat Room linked to the CS169.1x IRC Chat
01:59
Wait we have thirty minutes until Oeis challenge dies?
Any languages that only accept 16 bit numbers
Or 32 bit
no we have about 3 hours but I have 30 minutes left of wifi
C :P
Wait but y
Pls
because my parents have a 10:30-7 wifi blackout for all 3 of my devices (which is really like 11-9...)
02:02
@KSmarts Progress Report?
could I hardcore in language that only has 32 bit numbers
hharecode*
hardcide*
i tried
that's a standard loophole, sorry
My progress so far:
https://tio.run/##rVXbbptAEH2GrxjlabemliHtSxUq5QfyAyse1rAhGHshsJZwK3@7O3thvSZO@1Ipcti5nJk5nFn6oVOdvFx6MRyOiqumkyPkMEH@E37HUfMKeyHJRCHPYQODUMdBAoNi4Uq9a0LXIMbjXiEMw8NrN0AjKzHBDxi4rAWxaVTjG29QG2PCTsjEVGezC1jBxCzQCuuprrAIrtqa972QFWEuqNAJARbF0HOs/1ynNi0@xzGvdrwUsjxhx@Wp3IvRTT8fnBV7wXnG5pfwpnXf9QShD1wNzaQnZpsCvoAJMpP7qbWJOj5MMnpcAT1Gk8AugXZGRpjEPaX@KcN0V4o1BdsVGH09tsFxV6Dl5hh621tv66DSkB7r0/Qo7H/Erg8YwjUzjHFXQM@yu3mvHM2UFovZjQfNcdyM3aEb@remRDTCE9hSR7ary@WJjN2gREW2Rlru4LsgzygdDf@8FMs1BGtR3XojlRhGURpphfXYZCC0JjmgkicUGWyxv6P8d6jslA1HhW0hjuuB929aJrKrvHYw0h6fcsj8dhSBA2d79A5GNgmkCWQ0gcdiuUNiakbVyDpYKVM
02:04
That links to a blank page
you'll need to click "see full text"
Why is it not workin
Why is the code not working
now what I don't get is why the second of the two graphs exists; I tried to make it but it doesn't seem valid
https://tio.run/##rVXbbptAEH2GrxjlabemliHtSxUq5QfyAyse1rAhGHshsJZwK3@7O3thvSZO@1Ipcti5nJk5nFn6oVOdvFx6MRyOiqumkyPkMEH@E37HUfMKeyHJRCHPYQODUMdBAoNi4Uq9a0LXIMbjXiEMw8NrN0AjKzHBDxi4rAWxaVTjG29QG2PCTsjEVGezC1jBxCzQCuuprrAIrtqa972QFWEuqNAJARbF0HOs/1ynNi0@xzGvdrwUsjxhx@Wp3IvRTT8fnBV7wXnG5pfwpnXf9QShD1wNzaQnZpsCvoAJMpP7qbWJOj5MMnpcAT1Gk8AugXZGRpjEPaX@KcN0V4o1BdsVGH09tsFxV6Dl5hh621tv66DSkB7r0/Qo7H/Erg8YwjUzjHFXQM@yu3mvHM2UFovZjQfNcdyM3aEb@remRDTCE9hSR7ary@WJjN2gREW2Rlru4LsgzygdDf@8FMs1BGtR3XojlRhGURpphfXYZCC0JjmgkicUGWyxv6P8d6jslA1HhW0hjuuB929aJrKrvHYw0h6fcsj8dhSBA2d79A5GNgmkCWQ0gcdiuUNiakbVyDpYKVM
try again?
02:06
Why is code not working
idk then
Like is it outputting write numbers
right
Does code have bug
02:07
Where
Or do you have any idea
in the secondary nested block; it's not removing the common edge in the cycles for the second operation as defined here: math.stackexchange.com/questions/2463073/…
Which step is this
Sorry I'm not that much of help
that's alright
02:10
Pls I just want to code Oeis sequences :(
You think you can get it working?
I think the chain has already been broken?
Last answer was a week and 3 minutes ago.
Wait wha
nop
I don't think so?
We still have 2 hr 55 min
02:13
huh?
Bad timezone settings maybe?
wot dats not the right time
that would be a week and 12 hours ago?
boi it's dark outside
ohright24hourtime
02:13
probably bad timezone setting. mine also says "answered oct 3 at 1:08"
@HusnainRaza australia
As a reminder: Australia.
and I live approximately across from you
australia also gets dark
East coast?
@HusnainRaza YES BUT AT THE OPPOSITE TIME OF YOU (sorry yelling lol :P)
02:14
It doesn't get dark at 1:14PM :P
wait are you in Australia
@ATaco EDT (-4)
is code working :c
AEDT +11
nope
@ATaco so a bit less than across :P lol
02:15
I've seen the future of your Tuesday, and it is: Kind of lame!!
0
Q: Given an int input n, print out n*reversed(n)

K Split XGiven an integer n, print out n * reversed(n) reversed(n) is the number you get when you reverse the digits of n. reverse(512) = 215 reverse(1) = 1 reverse(101) = 101 >>>>>>>> func(5) = 5*5 = 25 func(12) = 12*21 = 252 func(11) = 11*11 = 121 func(659) = 659*956 = 630004 Shortest co...

Bug #1 patched
attempting completion of Stage 3
Good luck
thanks
9 minutes to go
02:21
pla
pls
Hey
I'm not solving that in 9 minutes, not a hope in hell.
TIL: Lua's string.reverse works on ints.
Anonymous
@Dennis Clearly you hit that delete button on the bottom one. The code is 11 bytes. Mod abuse 11.
hope this works
0
A: One OEIS after another

HyperNeutrino206. Proton, 3275 bytes, # This took me quite a while to write; if it's wrong, please tell me and I'll try to fix it without chainging the byte count # The main purpose in these comments is to provide byte padding in case I screwed up. I didn't get time to test the submission fully but I believ...

largest SE answer here I think \o/
ARBLE is neck and neck with Perl because of it's implicit IO.
02:35
(personal record)
(the thing that makes everyone think that you're breaking loopholes lol
I excpected to be called up for a*reverse(a) as a full program :P
0/10 reverse is way too long for a golf lang
I think my answer has an issue with it
@Pavel ARBLE isn't a very good golf lang.
02:37
Couldn't you have called it rev or something
@Mego I'm temporarily removing this answer because it was posted too early.
6
I've not done much in the way of Aliases for library functions.
Anonymous
@Dennis And by temporarily removing I mean I'm nuking your account.
current progress, has a minor issue:
https://tio.run/##tVdNc6M2GD7Dr3g7PQQa6onxbg/bujN7ay576o3hIIOMZYPASGxwO/nt6asPBMYf2Znuzjgx0vv98DyK0rS1rPnb28/w944JkHV9gIrCsWOSAoGXHSsp7sJLixu/A9sCkw8ClzUvImhKSgTaaVmqKMJzeH7AZ9meVNCW9egOL0zu6k5CtiOMF/gBuaOwOWGFrO649H1VnUKFZmi6tqkxJz6il1AuVUW5FKDbg6atv7Lchjckz1U@dM5UI88gspa@0By6ZoGrnOX8QUJBJUhW6UEkFVLXF92mYkKwmsO2K8sTbLDFZ9jQktGvVPddtwcRAZGgxpSwrVsdqUoJdJUto/kC/iLovu24nlM7cNpLEPTYUZ7Rn3y/oW3VSSKxloA19LD@E/71PQSzpDzoQ1iv4QlaKruWQwLpzLR0ph5NLRVdKTFNggvVEuM57eETtIQXNDBhocqvrZPa6DPtJOgTxENHp/AIfWISPWI9Wacmg622IE1DeR4k1ilVAZNcIbq@@upjOzVh/qvvk3xPMsThhB1np6xE5Mz0w8LuYi84j2D/ULe1aOomwNQVQaR7NXHylMI
If it's invalid, that'll probably mean the challenge is done. Better make it valid real quick before the OP notices :P
02:44
I think I made your Mathematica answer work, but it times out on TiO for n>4. Does anyone have a full version of Mathematica that could test it for me?
You can test it yourself at Wolfram, let me grab a link
Wolfram Sandbox times out too
Oh...
sorry, my version was corrupt
(also I managed to convince my dad to temporarily turn off the wifi restriction for this device so I have more time now)
Pls
post the Mathematica code
02:49
I bet half of the answers time out at a certain point and probably aren't even right past there but it's close enough anyway
It doesn't need to finish before the heat death of the universe, it just needs to theoretically finish.
yeah but it could be wrong past there but nobody could test it anyway
I should probably test more than the first two cases, though.
03:22
I'm pretty sure it works now
I will probably need to test this on a larger test case sometime but TIO doesn't work so time to use my computer and run another overnight test
anyway I gtg now o/
 
2 hours later…
04:54
0
A: Sandbox for Proposed Challenges

fireflame241I got them Mad Matrix Moves code-golf graph-theory matrix Given a list of edges representing a simple directed graph and (optionally) the number of vertices n>1, output the adjacency matrix of that graph. The vertices will always be numbered consecutively starting at 0 (or 1 -- your choice)....

 
1 hour later…
06:00
Evening-me will regret waking up at 5 am to watch the Star Wars trailer, but current me doesn't
Coffee is the healer of all wounds.
Make sure to not drink caffine within 6 hours of when you plan to sleep! :P
I don't drink coffee, never did
That's fine, to each their own. I usually prefer Tea personally.
I only drink water
That's fine too, Aslong as you're staying hydrated.
If you need a natural way to wake up, try an apple, or killing a man, or having a cold shower.
06:05
"killing a man" ಠ_ಠ
(I hope I don't need to say this, but please don't try killing a man as a method of waking up in the morning.)
too late
good news i'm awake as ever now though
06:37
@ATaco Before I notice what?
07:01
CMP: Should I give Hyper the benefit of the doubt and keep the OEIS challenge going, or should I be very strict? (He answered 3 hours after the deadline)
@cairdcoinheringaahing I'm out of the loop
07:30
-1
Q: I need a program in JS

Dominic EdekiWrite a program that reads in lines of input from the user until the user enters a blank. The program should print out the total number of occurrences of each letter in the alphabet. These should be printed in alphabetical order.

2
Q: 26 Singers, 26 Letters

ArnauldAccording to RollingStone, below are the 26 greatest singers of all time: Aretha Franklin Al Green Ray Charles Robert Plant Elvis Presley Mick Jagger Sam Cooke Tina Turner John Lennon Freddie Mercury Marvin Gaye Bob Marley Bob D...

07:56
>> format rat
>> 2^(1/12)

ans =

    1657/1564
TIL
0
A: Sandbox for Proposed Challenges

Ian H.The Speed of Letters Given a string as input, print a new string with each letter pushed to the right by its respective alphabet index. We all now that A is a slow and Z is a fast letter. This means that Z gets shifted to the right by 25 spaces and A doesn't get shifted at all. Your program on...

@LeakyNun lol (helpful for anyone that is wondering what's happening)
08:40
trying to find a mapping for that 26 singers/letters challenge.. 22/26 uniques took a matter of seconds, 23/26 uniques took 20 minutes.. i wonder how long 26/26 will take :D
-1
Q: Mysterios Authentication Protocol Challenge - MerkleTree

Paul Walkertoday i'm here to share a challenge, which was not solved until today. a) The mysterious authentication Protocoll a Merkle Tree is build for each user that is registered on the system The root of the merkle tree is uses within the authentication process then, when a user wants to authenticat...

25 randomly :o
@NewMainPosts What even.
09:14
-1
Q: How to convert time in 12 hours to 24 hours and vice versa

Dominic EdekiI am taking a javaScript coding challenge which require me to convert time in 12 hours to 24 hours and vice versa. I am working with repl.it Online Ide as specified in the challenge and i keep getting several syntaxError messages. i can't seem to find a soluton. i just don't know how to make the ...

discovers 05AB1E's else statement ë
@Neil O_o it has an else statement
who knew?
09:32
0
Q: Make some Alphabet Rain

streetsterAlphabet Rain The Task: The basic premise is to print out the input string and then repeat each character vertically, based on it's (0-indexed) position in the (case-insensitive) alphabet A-Z. A is at location 0 so is not repeated, e is at position 4 so is repeated 4 times, P is at position 15 ...

i have a solution to that challenge but i don't know how to turn it into code haha. i totally forgot how to construct C programs
bah, multiplication and prime factorisation is still a byte shorter than list concatenation
Anonymous
10:06
@jaytea #include <stdio.h> main(){/*bit-shifting madness*/}
haha thanks. i found inspiration in the "undressing strings" challenge
but found an error in my mapping so i'm trundling off back to the drawing board
finds the 05AB1E registers, but that's longer than stack twiddling
10:47
-1
Q: Multi-Base Primes

GryphonFor the purpose of this challenge, a multi-base prime is a prime which, when written in base 10, is prime in one or more bases smaller than 10 and larger than 1 as well. All single-digit primes are trivially multi-base primes. 11 is also a multi-base prime, as 11 in binary is 3, which is prime ...

11:22
@jaytea You what.
> Ask # get index of current char in the lower case alphabet
10/10 05AB1E
11:45
what what
I'm currently running a test on my computer for 7 for the OEIS challenge lol. Hope it works.
I'm glad I had the spacefiller comments :P
@EriktheOutgolfer Did you try doing it the 05ab1e way (printing the other way)
like how
haven't looked at that answer yet
printing across not down (although it's probably longer)
yeah would be definitely longer
12:10
huh I got necromancer from OEIS lol
@EriktheOutgolfer 14?
...
sure
although that still points down
thanks anyways
possibly one less if we can take input with trailing newline (probably not)
@ASCII-only heh
@EriktheOutgolfer yeah well you said it would probably definitely be longer >_>
12:12
of course it would
I don't think charcoal can easily "replace every letter that matches the iteration number with a space" >_>
double map would probably work
you mean two maps one nested in the other?
also it took me some time to figure out logical or works opposite from the docs
:| what oh no
12:16
> y if y is truthy, else x if x is truthy, else False. Short-circuits.
that should be the other way around I think
oops>_>
also explicitly returning False isn't how it usually works in most languages
halp i broke my own language why the [redacted] is there an int
Also I feel like x or y should be x if x else y not x if x else y if y else False...
(ninja'd)
@EriktheOutgolfer Huh?
@HyperNeutrino Oh oops >_> yeah I use Python or directly anyway
12:18
yeah so then that returns the second value when falsy
@ASCII-only what hyper said
x or y is like x if x else y not x if x else y if y else False in python
yay, I saved a byte: ¯R[D¯‚!P¹*D¿÷Z#Ó€gZ<Øs`›iˆë¸«]\¯‚R
and execvar is nowhere to be found in the docs
@EriktheOutgolfer oops
@Neil You can remove the first R
12:21
@ASCII-only wth does that even make sense at all
wait
that's index nvm
yep it's a search icon
@EriktheOutgolfer what
no i mean k is index var of first loop
oh yeah you need λ
also oops map over string returns a list :|
12:23
and yes map over string will return a list because it doesn't know if you want to concatenate into string
e.g. how can you concatenate into string when it returns integers
@EriktheOutgolfer θ↙↓E⮌θ×ι⌕α↥ι
@Emigna no I can't
@Neil Why not? You're just reversing an empty list
@EriktheOutgolfer explanation :P
@EriktheOutgolfer you do not simply outgolf Neil
what do you think ¯1ˆ prints?
12:27
@Neil A list containing 1
@ASCII-only but I don't get it
my point exactly, I don't want the array on the stack to be modified by the ˆ
@EriktheOutgolfer It prints a map down
Which means the newlines move the cursor left
but...reverse? does it rotate?
So it's for some kind of weird base case?
12:29
wait no
there's nothing weird about the base case
@EriktheOutgolfer It ends past the last character, so we need to map the backwards string (plus mapping the normal string wouldn't work anyway)
I have two lists (one for the numerator, one for the denominator). I don't want mutating one list to affect the other
Well, I haven't really checked the challenge
Works fine for the example input in your link without R
Could you give an example where R is needed?
12:31
@ASCII-only oh so it's printing from the right
I see
@EriktheOutgolfer Yep
and the down arrow does indeed rotate
...charcoal is really just weird
@EriktheOutgolfer :| why
seems sane to me compared to 05AB1E
12:33
well it definitely needs more documentation
What would you expect to happen when you print down
which itself seems sane to me compared to Jelly
@Neil Then how about replacing ¯R with )
@ASCII-only the rightmost column to have a mess of chars
@EriktheOutgolfer pls tell me what documentation Charcoal lacks ty
@EriktheOutgolfer and when would that be useful in golfing :P
12:34
how newlines work for example
ooh, nice, thanks!
mfw Pyth just outgolfs all the new golflangs
@EriktheOutgolfer verbose alias for InputString, basically like Python input without prompt capability
is it really an intended feature?
12:38
@EriktheOutgolfer Is what
@ASCII-only whoa that is cool :D
@HyperNeutrino it really just means "down right"
wut ._. lol
@HyperNeutrino CMC: print that
CMC: Print this exact text:
    X
   / \
  / X \
 / / \ \
X X X X X
 \ \ / /
  \ X /
   \ /
    X
Trailing newline is optional.
wait :dr ... is the verbose version right?
@HyperNeutrino Almost
@HyperNeutrino What do you think >_>
12:45
Why else would it be ASCII-only lol
I made slashes palindzomize to X vertically but not horizontally ಠ_ಠ
SOGL, 13 bytes
This would be a version that should work if slashes overlapped horizontally correctly
@ASCII-only :O that looks cool though :P
Anonymous
12:55
@HyperNeutrino Bubblegum, 42 bytes: tio.run/…
@HyperNeutrino 23 bytes
ooh cool

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