The Nineteenth Byte

@Lembik No, because I don't even know what a field is and don't even struggle to understand. I will leave that job to my maths professor(s) next years.

Lembik

5:29 PM

@Mr.Xcoder do you know what a polynomial is?

Mr. Xcoder

@Lembik Yes, from physics

Anonymous

@Mr.Xcoder A field is just a set of numbers under which addition, subtraction, multiplication, and division are defined and closed (every operation on two members of the set yields a member of the set).

Leaky Nun

@Mego except for 0.

0 (the additive identity) does not have a multiplicative inverse

Lembik

@Mr.Xcoder and do you understand what it means to divide one polynomial by another?

Nathan Merrill

@Mego aren't all encodings a context-sensitive alphabet?

Mr. Xcoder

5:33 PM

@Mego Oh, so you have like {1,2} and you expand it to {1*2,1/2,1+2,1-2} and then expand this... and so on

@Lembik Example?

Anonymous

@LeakyNun Well yeah, 0 is usually excluded from the requirement, and any attempts to define a/0 just make things worse :P

Lembik

hi @feersum

I don't fully understand your point.. could you explain it a little more?

do you mean the irreducible polynomial?

feersum

Yes an irreducible degree k-1 polyonmial

Lembik

@feersum you are right of course ... I should add that

@feersum although I think you were wrong about my other challenge :)

feersum

Which one?

Lembik

5:35 PM

{1,a, a, b , b,...} is not a set

feersum

When did I say it was?

Leaky Nun

@Lembik it is

depending on what ... means

Lembik

@feersum it was your example of a massive set

Step Hen

Posting this soon, anything before I do?

1

A: Sandbox for Proposed Challenges

Fastest Gun in the West code-golf You are the roughest, toughest, coolest cowboy west of the Mississippi. However, some weird guy on a wacky nerd website decided that it would be cool to plop you into random unfinished landscapes and fight. No matter, you'll still win. However, to help you win ...

Mr. Xcoder

@StepHen Taking a look ^

Anonymous

5:37 PM

@Mr.Xcoder Sort of. You technically don't have to have the exact same operators as normal arithmetic - they just have to work similarly. For example, you can have a field whose operators are addition and multiplication modulo a constant - when that constant is a prime or a positive power of a prime, you get a finite field (aka a Galois field), which are important in cryptography.

Step Hen

@Mr.Xcoder Thanks :)

Mr. Xcoder

@Mego Well, hopefully my maths professors will explain that better in the future

feersum

Jun 23 at 10:26, by feersum

Or if each set is some [0, a, -a, b, -b, c, -c] that's (128 choose 3)^2.

@Lembik You mean this?

How is this not a set

Anonymous

@Mr.Xcoder Addition and multiplication modulo 2 are defined and closed on the set {0, 1}. If you add or multiply any elements in that set together and take the result modulo 2, you get an element in that set.

Lembik

@feersum oh! I misremembered it.I am completely wrong

apologies

Mr. Xcoder

5:40 PM

@Mego I got the point. Thanks

Anonymous

You can then define subtraction and division in the normal way - the inverse operations of addition and multiplication.

feersum

@Mego That's not how a Galois field works for prime exponent greater than 1.

Anonymous

@feersum Ok, so I lied a little bit for simplicity :P

Mr. Xcoder

@StepHen You should add a spec that there will be exactly one gun in the input. It might be subject to confusion if you don't.

feersum

Well it would be frustrating for some one to read that and try to implement it that way :P

Step Hen

5:41 PM

@Mr.Xcoder There will always be exactly one gun, matching the above description, in the landscape that's what I have now, that good enough?

Anonymous

I was going for "simple overview", not "undergrad class" :P

Mr. Xcoder

@StepHen Yes, it's ok

Step Hen

@Mr.Xcoder Cool, thanks :)

Mr. Xcoder

@StepHen It's a tough challenge, don't expect to get lots of answers though :P

Lembik

@feersum on my current question. For F_4 I believe x^2+x+1 is the irreducible poly.

@feersum can I check that with you?

please

Anonymous

5:42 PM

Undergrad class would be hard, given that I never took a formal class on abstract algebra

Step Hen

@Mr.Xcoder I know, but I hope at least someone tries it :)

Mr. Xcoder

@StepHen It is ~~very~~ hard in Python, and close to impossible in Swift

Step Hen

@Mr.Xcoder Yup, vertical parsing isn't someone regex or other builtins can usually do

Mr. Xcoder

That's because checking for shapes in multiline Strings are generally very hard

Anonymous

I remember a while ago (over a year), there was some talk about somebody trying to make a 2D regex variant. I wonder how that went.

Mr. Xcoder

5:45 PM

@Mego Probably not that well if we don't already know of it :/

feersum

@Lembik There are (2^n - 2^0)(2^n - 2^1)...(2^n - 2^(k-1)) possible choices for the irreducible poly for GF(2^k)

Step Hen

@Mego Well, if you can find it, you'll cream the competition :P because that's exactly what you need for this challenge

Lembik

@feersum fixed I hope

Mr. Xcoder

The design of the Cthulhu esolang is really static. I haven't done any progress in 3 days :/

Lembik

@feersum please check if you have time

Downgoat

5:46 PM

@Mego SnakeEx?

Mr. Xcoder

@StepHen I didn't expect it to come that fast. @NewMainPosts is sleepy :/

Step Hen

@Mr.Xcoder 'course

feersum

@Lembik It's a bit unobvious that both polynomials need to be in the output. Why not put both in the code box of the example output?

Lembik

@feersum good idea

New Main Posts

2

Q: Fastest Gun in the West

You are the roughest, toughest, coolest cowboy west of the Mississippi. However, some weird guy on a wacky nerd website decided that it would be cool to plop you into random unfinished landscapes and fight. No matter, you'll still win. However, to help you win those grueling gunfights you'll writ...

code-golf

Lembik

5:48 PM

@feersum but actually.. I have x^2 + x + 1 but the degree should be 1

Step Hen

@NewMainPosts that's pretty good

Lembik

@feersum I seem to be screwing this up

Mr. Xcoder

Not that sleepy ^^^^

@NewMainPosts @StepHen Trying to solve it :) I don't guarantee I will succeed though

Step Hen

@Mr.Xcoder Good luck :P

Lembik

@feersum or should the irreducible poly be of degree k?

Mr. Xcoder

5:50 PM

@StepHen I will probably fail :/

Anonymous

@Downgoat I don't remember what it was called, or if enough progress was made on it to give it a name. I just remember the idea being floated in chat once.

Anonymous

@Lembik It's of degree k. The irreducible polynomial for GF(4) is x**2 + x + 1. I say the because it is the only one possible.

Mr. Xcoder

@StepHen So a gun would never look like this:

(0)
(o\ /9)
(oVo)
\o/

Is not a gun because of the `9` inside?

Ignore the formatting

Lembik

@Mego thanks!

feersum

Yes it should be degree k.

Lembik

5:53 PM

phew :)

Anonymous

@Lembik Glad to help :)

Mr. Xcoder

@StepHen Gave up already.

Lembik

@Mego thanks! I hope the question is ok now! Could you be so kind as to take a look please

Anonymous

I wonder what challenge has the shortest time between "Huh, that looks interesting" and "I give up"

5

Anonymous

@Lembik Which question?

Mr. Xcoder

5:56 PM

@Mego Probably the one above :)

Anonymous

The only one I see is the FGITW one

Lembik

@Mego codegolf.stackexchange.com/questions/129359/…

Anonymous

@Lembik Looks fine to me, but as I previously stated, I don't have a formal education in fields. My knowledge of fields is only what I have to know to understand cryptography :P

Lembik

@Mego I think that's more than enough here!

Step Hen

@Mr.Xcoder Yes, that is correct. I have a feeling this one might be one that's answered in a month :P we'll see what some obscure esolangs can do

Anonymous

5:59 PM

Based on my understanding, it looks well-specified, but someone better educated than me may find an issue with it.

Lembik

@Mego thanks!

@Mego I am already intrigued by orlp's question

why would that help??

Mr. Xcoder

@StepHen The few answers it will receive will probably be rewarded in @HyperNeutrino's contest

Lembik

oh.. what is the new star rule?

I just starred a comment

that is what counts as abuse?

Step Hen

@Lembik Abuse is when someone stars 5 random messages in a row to spam the starboard

Lembik

and here is another challenge :) Write that lets you grep for 2^n in a pdf produced originally from LaTeX

as in $2^n$ in the original LaTeX

that might be too hard of course

but it's certainly a coding challenge

Mr. Xcoder

6:03 PM

what is a grep?

Lembik

@Mr.Xcoder really?

Mr. Xcoder

I know it is a bash command or sth

Lembik

what is google ? :)

2

Mr. Xcoder

@Lembik really

Step Hen

@Mr.Xcoder Linux keyword for something something replace

Lembik

6:04 PM

Grep

grep is a command-line utility for searching plain-text data sets for lines that match a regular expression. Its name comes from the ed command g/re/p (globally search a regular expression and print), which has the same effect: doing a global search with the regular expression and printing all matching lines. Grep was originally developed for the Unix operating system, but later available for all Unix-like systems. == History == First appearing in Version 4 Unix, grep was created by Ken Thompson as a standalone application adapted from the regular expression parser he had written for ed (which...

Mr. Xcoder

@Lembik Already searched :)

Lembik

:)

Step Hen

23 hours ago, by Step Hen

Why is TNB prioritized over Google 0.o

Lembik

@Mego I am guessing that that grep challenge is not suitable?

Mr. Xcoder

@Lembik Sorry for my terrible lack of knowledge about maths and linux.

Lembik

6:06 PM

@Mr.Xcoder no its fine. I was just surprised you didn't first google the word

Anonymous

@Lembik I haven't been looking at main today, so I don't know what you're referring to

Lembik

@Mr.Xcoder bfy.tw/Txg

Anonymous

@Lembik There is no new star rule. The rule that has always existed network-wide is "don't spam stars to be a troll". People just don't want to follow that rule because currently there isn't really an effective way to enforce it.

Mr. Xcoder

@Lembik :/

Lembik

@Mego my slightly wacky idea for a challenge that asks you write a tool that can grep for the math "2^n" in a pdf that was produced from LaTeX

Anonymous

6:08 PM

@Lembik I know what grep is. I don't know what you mean by "orlp's question".

Lembik

@Mego I pinged the wrong person! Sorry

Anonymous

Ah, ok, I'm less confused now

Mr. Xcoder

@Mego "May we also output the polynomials and/or field elements encoded as the bits of an integer we output?" - orlp

Lembik

@Mego thanks about the stars. So I can happily carry on starring things I find slightly amusing :)

Step Hen

@Lembik yup, you can star what you think fit, but not 5 messages in a row of random convos just to fill the starboard

Lembik

6:09 PM

@StepHen ok thanks!

Mr. Xcoder

@StepHen "Lol" was starred for 5 mins :)

Anonymous

@Lembik Of course! Just don't be annoying by starring literally everything.

Step Hen

@Mr.Xcoder ^ probably still is starred

Lembik

@Mego please tell me if I am being annoying :)

Step Hen

as in a message that just contained ^

Mr. Xcoder

6:10 PM

Really @Lembik ?

Lembik

I wonder what the longest time between question and answer is for a code-golf challenge

Anonymous

@Mr.Xcoder Oh, I don't see why that would be problematic, but I'm not the challenge author :P

Lembik

@Mr.Xcoder re: ?

Step Hen

@Lembik codegolf.stackexchange.com/questions/88783/… probs

Anonymous

@Lembik Tetris in GoL: still not answered

Mr. Xcoder

6:11 PM

@Lembik The answer is self-evident.

Lembik

@StepHen nice!

Step Hen

@Mego that doesn't count because it doesn't have an answer yet, so the time is infinity :P

Lembik

@Mego I meant that had an answer

Anonymous

@StepHen Infinity is larger than every number

Anonymous

@Lembik You could search that in SEDE

Lembik

6:12 PM

what is SEDE?

@Mr.Xcoder I have lost the thread sorry. What are we talking about?

Anonymous

Stack Exchange Data Explorer: data.stackexchange.com

dzaima

data.stackexchange.com/codegolf

Mr. Xcoder

@Lembik Forget it.

Lembik

forgotten

thanks @Mego @dzaima

Anonymous

Repeatedly starring and unstarring things is still star spam. Cut it out.

26

Lembik

6:14 PM

does anyone here know how to grep for math in a pdf document?

like 2^n?

I didn't even know you could unstar!

Anonymous

@Lembik Depends on if the PDF has actual text in it, or just an embedded image.

Mr. Xcoder

2 days ago, by Mego

Stop abusing stars. It is never funny.

Lembik

@Mego I meant that is produced from $2^n$ in latex

Anonymous

@Lembik I have no idea how LaTeX is represented in a PDF

Lembik

@Mego let me make a quick example

New Sandboxed Posts

6:16 PM

0

A: Sandbox for Proposed Challenges

Make a Pristine Quine code-golf restricted-source quine This challenge is based off of Helka Homba's question Programming a Pristine World. From that question, the definition of a pristine program is: Let's define a pristine program as a program that does not have any errors itself but will...

Mr. Xcoder

I wasn't the one that starred and unstarred repeatedly. I don't understand the reason of me being kicked.

Anonymous

@Mr.Xcoder That was a reminder to the room that star spamming is not acceptable, because there was massive star spam going on (to the point that the only way I could keep up with cancelling stars was to timeout the room temporarily). There's a significant difference between starbait and a room owner saying "cut it out".

Mr. Xcoder

Ok, @Mego

Anonymous

→ 2 messages moved to Trash

Lembik

@Mego how can I share a small file?

Anonymous

6:18 PM

@Lembik Dropbox, Google Drive, Microsoft OneDrive, etc.

Lembik

@Mego dropbox.com/s/5v8bmg2jxl1ypvb/test.pdf?dl=0

Mr. Xcoder

@Lembik What is that supposed to mean?

Lembik

@Mr.Xcoder it's an example of a pdf with 2^n in it

that was produced from LaTeX

totallyhuman

$2^n$ obviously

Lembik

@totallyhuman yes

but how can you grep for it?

Anonymous

6:23 PM

It looks like it's encoded in the PDF as a raw image, so it can't be done without a dictionary of encoded images of LaTeX symbols

Lembik

@Mego really?? I had no idea

in this case it's only one thing that I want it to grep for

literally $2^n$

Anonymous

You could look at the image blob in the PDF and search for that, but there no guarantee it will be identical between different LaTeX implementations/exporters. For example, in that test PDF, the 2 and the n are distinct images.

Lembik

@Mego I have added a question to the sandbox

@Mego please comment if you have time/energy

Mr. Xcoder

Where did this title "The Nineteenth Byte" come from?

Anonymous

@Lembik I'm low on both right now, but I'll look at it later when I have more of each :P

Phoenix

6:28 PM

The pub at the end of a golf course is traditionally called "The Nineteenth Hole", because a golf course normally has eighteen holes.

Also, "The Nineteenth Byte" is itself 19 bytes long.

Anonymous

37

A: Let's think of a creative name for our chatroom

Well, the traditional generic name for the country club bar is "the nineteenth hole", which suggests The Nineteenth Byte or something like that.

Mr. Xcoder

@Phoenix Oh, the ones who picked the name were creative :).

Anonymous

@ATaco Suggestion for your chat userscript: a quick canned response to "Where did this room's name come from?" so that I don't have to look up that meta post every time :P

Mr. Xcoder

@Mego Thanks for the reference.

Anonymous

@Mr.Xcoder Glad to help. Also an interesting/semi-important thing to note is that dmckee was one of the original PPCG mods when it was in beta.

Mr. Xcoder

6:33 PM

@Mego Oh, interesting. I suppose they have left long ago.

flawr

@Riker dog angels

Step Hen

@Mego *pro-tempre mods right?

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Grep for math in a pdf document This challenge is likely to need the use of libraries. You may use any free library of your choice as well as any library. The challenge is simply to write a tool that can grep for "2^n" in a pdf document. That is the math that represents 2 to the power n. You m...

Anonymous

@StepHen Yep

Step Hen

@Mego Does this count?

Anonymous

6:37 PM

@Mr.Xcoder Basically. dmckee is a mod on Physics and is active there. I haven't seen gnibbler anywhere in years. Chris Jester-Young was active on PPCG a while back, but got busy starting a code tutoring company, and he hasn't been around in a while.

Mr. Xcoder

Seeing dmckee's profile, my appetite for Physics is open. Hence I will leave now. Sya!

@Mego gnibbler opened their account on June 23rd

And is very active on SO too

Bye!

dzaima

@Lembik data.stackexchange.com/codegolf/query/690247

dzaima

7:30 PM

@StepHen that is only in 68th place :p

totallyhuman

8:01 PM

>_> too much bold text on star board

New Sandboxed Posts

8:24 PM

0

A: Sandbox for Proposed Challenges

What's my flag? code-golfgraphical-outputinternet Write a program or function that, given a country, displays the flag of that country on the screen. You may use the internet to fetch the flag. Specifications You may take input as the name of the country (ex. Greece), as its two-letter count...

totallyhuman

>_> too much bull on the star board

Step Hen

OK who's star spamming again

Phoenix

@Mego I think having that pin causes more star spam than it prevents.

> Don't feed the trolls

Anonymous

8:46 PM

@Phoenix I disagree. Star spam is going to happen regardless because people apparently can't behave themselves in public unless there are consequences.

LegionMammal978

Anyone have something I can do?

totallyhuman

is the no mental effort requirement still there?

LegionMammal978

I should need to use no more than 1534% of my brain at any given point

totallyhuman

oh ok that makes sense

Downgoat

@Mego you should add "will be banned to it" imo in that cade

we can't directly tell who starred but if we can determine

IIRC there was SE bot to detect star spammrt

Phoenix

8:52 PM

@Mego But there aren't consequences.

@Mego I don't think so. We normally don't get star spam, this has only happened very recently that we get so much.

feersum

There are consequences. Consequences which are enjoyable and funny for the spammer.

Phoenix

Yeah, putting the room in Timeout doesn't actually discourage star spam at all, and there's nothing else you can do.

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Am I an imperfect String? An imperfect string has the following properties (for this challenge only): The number of vowels (aeiou and uppercase) does not equal to the number of consonants (bcdfghjklmnpqrstvwxyz and uppercase) it contains. If it contains digits (0123456789), their count must be...

Downgoat

@ATaco can you add to I Am typing google hangout-esque "read" indicators which show who has read latest mesage

feersum

Yes, with eye tracking to make sure you really read it.

Christopher

9:22 PM

Real analysis is way realer than I expected.

Sign me up pls

New Main Posts

0

Q: Sinusoidal ASCII-art animated text

I somewhat miss those old demos showing the capabilities of computers when they were called x86 instead of i3, i5 and i7. One of the first I watched in my 386 was the Unreal demo from Future Crew that is now celebrating its 25th anniversary. At minute 0:43 the first part of the demo starts and we...

code-golf ascii-art printable-ascii animation

Downgoat

@feersum also face recognition to ensure eyes of are correct individual

Christopher

I am going to go insane. WOULD PEOPLE STOP REMOVING THEMSELVES TO SE. codegolf.stackexchange.com/questions/102370/… Who wrote that question!!!

Downgoat

Also make sure eye track work with goat eyes

Christopher

PSA: SE tries to find code and attempts to put code marks around chat messages

Step Hen

9:30 PM

@Christopher If you're still wondering, it was ais

Christopher

@StepHen Oh. Dang. Wasn't that adm bork bork at one point?

Phoenix

512

Q: Is it unethical for me to not tell my employer I’ve automated my job?

I currently work on a legacy system for a company. The system is really old - and although I was hired as a programmer, my job is pretty much glorified data entry. To summarise, I get a bunch of requirements, which is literally just lots of data for each month on spreadsheets and I have to config...

PSA: I suck at PSA's

@Christopher No...

@Phoenix Shoot. I am going crazy. I think I remember them. Reasons for leaving given?

Phoenix

9:32 PM

No.

We just never saw AdmBorkBork again.

Christopher

Wait Adm bork bork left?

I was talking about ais

@ADMBORKBORK RISE!!!

Phoenix

It's been over a month

Not pingable

reddit.com/r/ProgrammerHumor/comments/6jordq/…

Christopher

:_(

Phoenix

9:50 PM

TIL that Visual Studio is available on Mac

Anonymous

@Phoenix We've been getting star spam off and on for a very long time. The most-starred message from TNB (and also across the entirety of chat.SE) is "ok seriously stop abusing stars", from November 2015.

Phoenix

Right, but normally it comes as a single instance that doesn't keepy going for several days.

musicman523

10:39 PM

@Mendeleev I know you already fixed it, but I did the same thing (except I did chmod 000 /), and the way I fixed it was by rebooting directly into the console mode (usually Alt-Shift-F1 or some other key combo involving F1 on boot), logging in as the user root, which has permissions to access commands no matter what the file settings are, and fixing the permissions

Downgoat

10:51 PM

@Phoenix VS Code or normall VS?

Phoenix

@Downgoat Normal VS

@Downgoat visualstudio.com/vs/visual-studio-mac

Downgoat

Whaaaaaa TIL

Wait shit plane taking off

:O there is goat in plane safety video

Zachary T

11:09 PM

@Mego How many stars does that message have?

DJMcMayhem

11:29 PM

@ZacharyT 113

Zachary T

11:40 PM

Wow

Phoenix

Seems Legit

Adám

@Phoenix No it doesn't:

Justin

On the List of bounties with no notification, how do I add to someone's proposed bounty?

Phoenix

@Adám I just went to their website, it advertises that it works "even with a missing or bad hard drive"

> Installs a new OS
> Lets you keep your files

Justin

Does a comment on one of the answers suffice?

Adám

11:54 PM

@Phoenix I guess it is just a bootable Linux (set up to mount the host PC's drives) USB stick and nothing else.

Phoenix

Doesn't explain how you would supposedly be able to keep your files.

Windows filesystem wouldn't be visible to Linux

It would have to be a Windows Live OS

xtra-pc.com

They have different types available, where more expensive ones are apparantly even faster

@Adám Apparantly they made their own custom Linux distro

Einkorn Enchanter

@Justin I would say so

Justin

@EinkornEnchanter I guess the question is, should I edit it into the answer and the question in addition to a comment?

Einkorn Enchanter

Hopefully the OP will edit it in if you comment

Justin

Okay, makes sense

Phoenix

11:59 PM

I went into this fully expecting it to be a scam but it turns out to be a lot more legit than I expected. I wouldn't expect it to magically make your computer into a brand new one, but it will certainly recover a dead one and make it usable.

Einkorn Enchanter

You should probably edit it into the big scoreboard thing.

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