The Nineteenth Byte

PyGamer0

13:00

^ high quality covid cases graph (of India)

Unrelated String

for a golflang, i'd recommend focusing on making errors impossible over making them easily understood
it might make the non-error behavior even harder to understand if you invoke it by accident, but you'll also save someone a byte or two on something down the road :P

PyGamer0

yeah i will do that

kinda forgot about it lmao

@UnrelatedString so 1÷0 return infinity?

and what should 0÷0 return?

Unrelated String

inf, nan, 0, 1, the string 0÷0, the current date and time, whatever else you feel like

PyGamer0

13:16

inf for ÷0 and 1 for 0÷0

Unrelated String

someone's probably worked out what tends to be more useful but i'm not familiar with their results

PyGamer0

Adám

@PyGamer0 APL originally gave 1 for 0÷0 but it was later decided that 0 was more useful.

PyGamer0

oh ok

Adám

The average of an empty list should rather be 0 than one, no? (sum=0, count=0, sum÷count=?)

Razetime

13:26

@UnrelatedString on the side it'll make aoc unbearable

PyGamer0

13:37

@Razetime why?

Razetime

errors are really nice in AOC

Unrelated String

the more the merrier

Razetime

even really badly written errors will at least tell you that you're doing something wrong

Unrelated String

at aoc speeds you will fuck up, it's just a matter of how soon you realize what and how

Razetime

in something like jelly/vyxal you run into specialcase after specialcase after specialcase+undefined functionality

PyGamer0

13:39

its just a matter of to error or not to error?

Unrelated String

what to error on and in what circumstances

Adám

A PL can focus on golfiness or rapid development, not both.

PyGamer0

then i am focusing on golfiness since AoC is once an year

and this is what might happen: last minute bugs

so, golfiness is better

since code golfing is all year

so the language will get extensively tested or something

@Adám i read that as APL €_£

Adám

Well, "APL" comes from "A Programming Language" while I intended to start my sentence with "A programming language"…

Fatalize

14:47

@DLosc You’re exactly right. Spent days finding a good mnemonic for "input without the last element", didn’t find anything so I chose knife because it gets rid of k (not a lot of words start with k)

(Sorry for the 2.5 months late answer :P)

PyGamer0

List of epic languages (not in any order):
- APL
- Vyxal
- Jelly
- flax (self promotion :P)

Fatalize

@DLosc That’s mostly because I’m lazy and never finished it

@cairdcoinheringaahing angry French noises

2

user

15:05

Wow, are you going through all of TNB's logs since the last time you chatted?

Fatalize

Just searched for Brachylog to see if there was something relevant for me

user

oic

Fatalize

I’m not reading through months and months of TNB nonsense, I ain’t that crazy

user

@UnrelatedString But the errors should be made impossible in a sane way (e.g. not returning the -nth prime number for factorial of negative numbers :P)

Sandbox Posts

17:40

0

A: Sandbox for Proposed Challenges

Identify a "reverse checkers" position Task A reverse checkers position is a chess position where every piece for one player is on one colour and every piece for the other player is on the other colour. Your task is to find if the given (valid) position meets these criteria. For example, this po...

user

tmw you realize that piece of homework you thought you did before break is due tomorrow and you didn't actually do it

They really should've altered the stuff below that line :P

Fmbalbuena

CMC: remove the words that contain "*" example: two * three = a*b*c*d gives two * three =

user

Haskell, perhaps: unwords.filter(not.'*'elem).words (idk if it actually works)

Fmbalbuena

17:59

CMC: remove the words that contain "*" example: two * three = a*b*c*d gives two * three =

@Adám ^ help wanted

user

Scala: _ split " "filter(!_.toSet(32))mkString " "

Adám

@Fmbalbuena Can we use regex?

Fmbalbuena

yes

Adám

What to do about the space between = and a?

Fmbalbuena

?

Adám

18:02

Why didn't two * three = a*b*c*d become two * three = ?

Fmbalbuena

ab*c gives empty string

Adám

Sure, but should two * three = a*b*c*d give two * three = or two * three = ?

Should ab* be removed?

Should *ab be removed?

@Fmbalbuena vtc as unclear. What exactly does "contain" mean?

Does ab* contain *? Does *ab contain *? Does ** contain *?

Fmbalbuena

@Adám yes

Adám

Should ** be removed?

Fmbalbuena

@Adám two * three =

Adám

18:07

@Fmbalbuena Why was the trailing space removed?

What should abc a*b c*d def give?

Fmbalbuena

I'm F***ing idiot gives I'm idiot

Adám

How about *=*?

Kamila Szewczyk

@Adám wild guess: abc def

user

New emoticon

Adám

Aha, so we have to adjust spacing.

Fmbalbuena

18:09

@KamilaSzewczyk correct

@Adám gives *=* because no letters.

*o*

Adám

OK, so your answers here + those in apl.chat are slowly converging on a solid spec.

~~Should we remove **?~~ No, because it has no letters.

Can we assume that words are single-space separated with no leading or trailing spaces in the input?

user

Since it's a CMC, you could just interpret it any way you want (that's what I did)

This isn't a competition, CMC's are just supposed to be fun

Also, interpreting the rules any way you want lets you outgolf other people who stick to the spec more :P

Fmbalbuena

@Adám No

Adám

@user Yeah, except @Fmbalbuena simultaneously asked me for "help" solving this, so I figured the CMC is actually an SO question in disguise.

Then how should adjacent spaces be adjusted?

Fmbalbuena

@Adám I didn't help you to solve

Adám

18:14

E.g. what should A *b c give?

Fmbalbuena

@RedwolfPrograms Can i post 13?

Adám

Well, you kind of did. You helped (or are currently helping) me understand what exactly the problem is.

user

@Adám oic

Fmbalbuena

@Adám do this now.

Redwolf Programs

@Fmbalbuena I'm not sure what you mean

Fmbalbuena

18:16

@RedwolfPrograms Counting Room

Adám

@Fmbalbuena Do what now?

Fmbalbuena

@Adám solve the CMC

Redwolf Programs

@Fmbalbuena Oh lol. It's a gallery room, so I'd have to add you, and I don't care enough about the room anymore to take the time to do so :p

user

What was it for in the first place?

hyper-neutrino

probably counting

Redwolf Programs

18:17

Testing how SE counts number of messages in a room

user

@Fmbalbuena You'd have to help Adám help you first

Fmbalbuena

I need to count to ~~100~~ 25

Adám

@Fmbalbuena I'm sorry, I cannot. I don't know what to do when there are multiple spaces between words.

user

@hyper-neutrino Ohhh, that makes sense now. It's totally not obvious to a newcomer, I thought it was about french toast at first

Fmbalbuena

@Adám a a*a a gives a

Redwolf Programs

18:18

@Fmbalbuena I know this is probably a language barrier thing, but if you're asking people to go out of their way to do things, adding a "please" is usually appreciated

Adám

@Fmbalbuena Whoa, I don't understand how that happened at all. Can you explain?

user

^^ It can seem like you're ordering them if you don't add a "please" or "thanks"

Fmbalbuena

[Space]a*a[Space] Returns nothing

Adám

@RedwolfPrograms Good point. Some languages (e.g. my native Danish) don't have the word "please" at all, so you have to phrase things in certain ways to achieve the same effect.

@Fmbalbuena OK, so the leading a stayed, but what happened to the trailing a?

hyper-neutrino

so, split on spaces and remove all substrings that have at least one letter and one *

wait, that doesn't explain the a a*a a case

Adám

18:20

@hyper-neutrino Exactly.

@hyper-neutrino @RedwolfPrograms Do you agree with me moving the messages that concern this from the APL Orchard to here? (There's no APL code involved.)

Redwolf Programs

Seems like it's probably just better here

Adám

What?

hyper-neutrino

yeah, I'd be fine with that, it doesn't seem too on-topic to APL TBH so we can merge the two

Adám

← 27 messages moved from The APL Orchard

Redwolf Programs

Oh wait, I read that backwards lol

But yeah, they're fine here

Seems like it's better to have them in one room rather than spread across two

Fmbalbuena

18:26

Regex: [a-zA-Z]*\*+[a-zA-Z]* | [a-zA-Z]*\*+[a-zA-Z]* | [a-zA-Z]*\*+[a-zA-Z]* (Not working if there is more than a word without *)

a a* gives a this is correct but a a*a a gives aa

@Adám Do you understand?

Adám

So let's see if we can summarise the spec:
∘ Remove any non-space sequences that have at least one letter and one star.
∘ When removing such sequences, also remove up to 1 adjacent space before and after, even if this causes two non-space sequences to be joined.

@Fmbalbuena Almost. What does a b* c give?

Fawn Locke

Basically just removing any words that aren't purely made up of stars or alphanumeric characters and then formatting

Fmbalbuena

a b* c gives a c

Adám

@Fmbalbuena OK, I think I understand now. What does a a* give?

Fmbalbuena

a a* gives a

Adám

18:31

OK, now I understand.

We need to remove / ?(\S+\*\S*|\*\S+) ?/g

Redwolf Programs

@Fmbalbuena That seems inconsistent with this case:

23 mins ago, by Fmbalbuena

I'm F***ing idiot gives I'm idiot

Wouldn't it be I'midiot?

Adám

Darn, you're right! So, no, I still don't understand.

Fmbalbuena

a a*a a gives aa because bug

Redwolf Programs

So it should be a a?

Fmbalbuena

@RedwolfPrograms correct

Fawn Locke

18:34

huh

oh

Redwolf Programs

Interesting...maybe words with a space on each side should be replaced with a space?

Adám

So my original summary spec was right?

Fawn Locke

yeah

Fmbalbuena

@Adám ~~yeah~~ no

Adám

@RedwolfPrograms I'm not sure.

@Fmbalbuena What should a* b* give?

And what should a b* give?

Fmbalbuena

18:35

a* b* gives nothing

a b* gives a

Adám

OK, so star-words are not just replaced by a space.

@Fmbalbuena Can you explain what's wrong with this:

∘ Remove any non-space sequences that have at least one letter and one star.
∘ When removing such sequences, also remove up to 1 adjacent space before and after, but leave at least one space if otherwise two non-space sequences would be joined.

Fmbalbuena

∘ When removing such sequences, also remove up to 1 2 adjacent spaces before and after, but leave at least one space if otherwise two non-space sequences would be joined.

Redwolf Programs

The abc a*b c*d def to abc def case is also interesting

Adám

@Fmbalbuena Please explain:

8 mins ago, by Fmbalbuena

a b* c gives a c

Fmbalbuena

[S]b*[S] will replace to nothing

Adám

18:39

@RedwolfPrograms How so? That's plain: all the spaces are removed as part of the star-words, but one space is left to separate abc from def.

Redwolf Programs

Does the a vs. b vs. c matter?

Adám

@Fmbalbuena But you said up to 2 adjacent spaces would be removed before and after.

Redwolf Programs

I think it was just a misunderstanding and they meant two total spaces, one before and one after (the same thing you'd said)

Fmbalbuena

hmmm i'm wrong

Adám

Oh, maybe you meant "a grand total of 2" while I meant "1 adjacent space before and 1 adjacent space after".

Fmbalbuena

18:41

∘ When removing such sequences, also remove up to 1 adjacent space before and after, but leave at least one space if otherwise two non-space sequences would be joined.

Fawn Locke

((⊣,' ',⊢)/⍤((1=∘≢∘∪'*'∘⍷)¨⊢⍤/⊢)' '∘(≠⊆⊢)) I'm tired of trying to understand this question :P

Adám

@Fmbalbuena Isn't that identical to what I wrote?

@FawnLocke You can shorten that significantly.

Fmbalbuena

You're right

Fawn Locke

ofc

I guess we are in the nineteeth byte now

Adám

OK, folks, I think we've got ourselves a CMC!

Fmbalbuena

18:43

⋄((⊣,' ',⊢)/⍤((1=∘≢∘∪'*'∘⍷)¨⊢⍤/⊢)' '∘(≠⊆⊢))'Hello, a*c*v*d*w*d m*h*m World!'

@FawnLocke Not working, jk

Adám

⊆ loses info about adjacent spaces.

Fawn Locke

Oh, remove up to 1 adjacent space

Fmbalbuena

@FawnLocke yes

Adám

Also, it'd fail on a b

I'm pretty sure '\b ?(\S+\*\S*|\*\S+) ?\b' ' ?(\S+\*\S*|\*\S+) ?'⎕R' ' '' does the trick in APL.

Can probably be shortened a little by reusing the pattern.

Fawn Locke

I forgot regex exists, parsing in APL is fun :)

Adám

18:50

(b,¨' ?(\S+\*\S*|\*\S+) ?'∘,¨b←'\b' '')⎕R' ' '' is best I have so far.

Test cases in case anyone wants to take on the challenge… Inputs:

"two * three = a*b*c*d"
"ab*c"
"ab* abc"
"*ab abc"
"I'm F***ing idiot"
"*=*"
"A  *b  c"
"a  a*a a"
"a a*a a"
"a   b*   c"
"a a*   "
"a* b* "
"abc a*b c*d def"

Outputs:

"two * three ="
""
"abc"
"abc"
"I'm idiot"
"*=*"
"A  c"
"a a"
"a a"
"a    c"
"a  "
"abc def"

Fmbalbuena

Any feedback?

Redwolf Programs

It's pretty hard to understand right now

Adám

Agreed. Even with the step-by-step, I have no clue what's going on.

Fmbalbuena

19:05

In other words,

Redwolf Programs

Also, for a sequence challenge, instead of test cases you'll have the first n terms

Fmbalbuena

Consider each value (1's,2's,3's,...) separately. Per construction, they will always be written in decreasing order. Then:
* First each value k is repeated k+1 times: 1 becomes 11, 2 becomes 222, 3 becomes 3333, etc.
* Then if a value k is appearing k+2 times or more, each block of k+2 occurences is replaced by one occurence of k+1

Redwolf Programs

So [1] becomes [1, 1] in step 1, then nothing happens in step 2, then it becomes [1, 1, 1, 1] in step 1, then [2, 1] in step 2?

Fmbalbuena

no

but

111 gives [3] because there is three ones.

Redwolf Programs

The number 111 or the sublist 1, 1, 1?

Fmbalbuena

19:11

the list [1, 1, 1] then count how many ones and gives [3]

Redwolf Programs

So [1, 1, 1, 1] becomes [3, 1]?

Or [[3], 1]

Fmbalbuena

[1, 1, 1, 1] becomes [2, 1] then count how many twos and ones and gives [1, 1]

Redwolf Programs

This seems totally different from the sandbox post

And also totally different from the description you gave above

Fmbalbuena

this is the same, but other words.

New Posts

0

Q: Play the Fruit Box Game

Play the Fruit Box Game Intro Fruit Box is a game consisting of a 10x17 grid of numbers, each between 1 and 9, where the goal is to clear as many numbers as possible in a two-minute time window. In order to clear numbers, one selects a rectangle aligned with the grid, and if the numbers inside of...

DLosc

19:18

@Fatalize Hey, welcome back! Yeah, I've run into the same thing with Pip--I recently added S for Suffix and H for... Prefix. The mnemonic is "head," although it doesn't do what Head does in other languages.

Fmbalbuena

@DLosc i have a Question

DLosc

That's nice. It's good to be inquisitive.

in talk.tryitonline.net, Dec 4 '21 at 0:11, by caird coinheringaahing

@Fmbalbuena Again, if you want to ask me a question, just ask it. Don't tell me you have a question

Fmbalbuena

@DLosc Why you like snoopy?

DLosc

IDK, I think he's a fun character. He's usually cheerful, doesn't much care what people think of his antics, and has a vivid imagination. I aspire to be like that.

Fmbalbuena

@DLosc why your name is Dlosc?

DLosc

19:26

It's an abbreviated form of my full name

Fmbalbuena

D..L.. o..s..c..

user

Note to self: Read challenges properly before critiquing

DLosc

Yep. My name matches the regex .*D.*L.*o.*s.*c.* ;P

Fmbalbuena

@DLosc osc seems to be oscar?

DLosc

Nope, it's part of my family name.

Fmbalbuena

19:29

ok, DL seems to be [REDACTED]

Adám

@Fmbalbuena Why is your name Fmbalbuena?

Redwolf Programs

@Fmbalbuena Out of interest, where'd you get the idea for this sequence? It doesn't seem to be in the OEIS

Fmbalbuena

@Adám don't think Fm, This is not real

@Adám My real name starts with S, not F or M.

https://vyxal.pythonanywhere.com/#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…

@Adám ^

DLosc

@user I try not to watch movies that are bad, b/c there are too many good ones I haven't gotten to yet. BUT, I did enjoy watching Cinema Therapy tear the Twilight movies to shreds, so maybe that's an option for you. :P

user

Are they so bad that they wrap around to being good or so bad that they wrap around to good and continue wrap around to bad? :P

DLosc

19:44

IDK, you'll have to find out for yourself =P

user

:\

DLosc

@RedwolfPrograms You know, they should design a placement test to measure how good students are at taking standardized tests... oh wait

Redwolf Programs

Okay, that sequence Fmbalbuena was talking about has caused me to find like 20 variations that aren't in the OEIS

user

Fmbalbuena will take the secret to their grave :P

DLosc

So my desktop computer has two 500 GB hard drives, functioning in a RAID 0 setup as one 1 TB hard drive, which is where the OS is installed. One of them has started failing occasionally, by which I mean I'll try to boot and it will say "Drive failed, not bootable" and then I'll retry it several times and run diagnostics and eventually it works.

Does anyone know how possible/easy would it be to swap out the failing drive for a different 500 GB hard drive? Could I just replace the hardware and keep my OS and programs intact, or would I have to reinstall everything?

Redwolf Programs

19:57

You could transfer everything from the failing disk to a new one of the same size pretty easily I think

Just use something like a bootable linux thumb drive and dd everything from the old failing one to the new one.

Are you using hardware or software RAID?

DLosc

@RedwolfPrograms I don't know, where do I look to find out?

Redwolf Programs

I'm actually not sure, if you didn't set up the RAID yourself.

DLosc

Ok

I think these were the disks that came with the computer when it was originally purchased, and I purchased it used.

Redwolf Programs

I'd be making backups like every other day though, with RAID 0 and a failing drive lol

You can likely go into your computer's BIOS options and it should say if it has a hardware RAID controller

I'm betting on it being software if it's a desktop. I don't know too much about software RAID, though.

DLosc

@RedwolfPrograms Yeah... I don't think I have much important data on there that isn't also in my Dropbox. I do also have a 1TB drive in there which I've used for backup. The main thing is, it would be annoying to reinstall everything.

@RedwolfPrograms I'll check

Redwolf Programs

20:04

Is it windows or linux?

DLosc

Windows 10

I use my laptop for almost everything and the desktop (which has a decent graphics card) for gaming.

Redwolf Programs

20:33

heehee I wrote a script that can do my latin homework

DLosc

20:53

@RedwolfPrograms rideo

user

So apparently you can run Linux apps that use a GUI on Windows using WSL2

It's still in preview and requires Windows 11 (and it probably breaks for lots of stuff), but this is so cool

Tell me that doesn't make you cry (in happiness and/or sadness)

Redwolf Programs

21:09

Same energy as firefox on a chromebook

user

Man, I had a bunch of Linux-only applications I wanted to try out and I can't remember them now :(

Redwolf Programs

I love how our abbreviated number of messages is 2000k not 2M lol

Should this be flagged as spam or VLQ?

user

VLQ would at least kinda attempt to answer the question

caird coinheringaahing

Spam, it's an exact copy

user

This doesn't seem to even be doing that, so I'd say spam

Redwolf Programs

21:22

I'll just go with spam

user

Time to jump on the flag bandwagon and get a helpful flag :P

caird coinheringaahing

@user It's copying the opening of the question

Redwolf Programs

They did change up a few words to synonyms :p

Seemingly randomly since some of them have rather precise meanings

caird coinheringaahing

slippery -> dangerous :P

user

@cairdcoinheringaahing Oh, didn't even see that

Redwolf Programs

21:24

"partitions" -> "allotments"

user

I was wondering how it was dangerous lol

caird coinheringaahing

And I'm pretty sure CHQ considers exact copies to be spam

Redwolf Programs

@user A team of well-armed mathematicians set out to find topologically distinct ways of dissecting a square into rectangles, but only one came back, spared as a warning to the rest.

user

21:48

CMP: If you were making a userscript to add a keyboard shortcut to a webcomic to go to a random comic, which key would you use? I'm currently using ?

caird coinheringaahing

r maybe?

user

Good idea, single key's probably easier to press

Redwolf Programs

You could use /

That's covenient if your fingers are near the arrow keys on a laptop

user

I might hit it accidentally when hitting the Right shift key

Redwolf Programs

What does that do?

user

22:00

And this is for the Oatmeal, which doesn't seem to have anything to go left or right :(, so my fingers won't be there

caird coinheringaahing

That's the self-destruct button

user

@RedwolfPrograms ...What the left one does?

Redwolf Programs

Yeah but like...on a userscript viewer lol

user

If I'm going into an Incognito window while on a tab with the webcomic open, I don't want it to switch to a random comic if I accidentally slip and hit / instead of Shift

@RedwolfPrograms Oh I'm dumb

Wait no I'm not dumb

Or maybe I am, I'm confused, what do you mean by userscript viewer?

Redwolf Programs

Meant webcomic viewer userscript

user

22:12

Oh, I haven't bound the Shift key (or any keys other than ? (now r)) to anything

Transcript for