The Nineteenth Byte

Erik the Outgolfer

13:03

I don't think I've ever flagged 14 comments as obsolete at the same time at the same post anytime before...

Business Cat

@ATaco 1-indexed arrays are great

-4

A: Square root a number

Haskell, 37 bytes x!n=filter(\z->mod(z*z)n==x)[1..n] Throws exception, if searched number doesn't exists

Should this be deleted?

Evidently 6 people think it doesn't meet the requirement. I don't really know how to test Haskell so I can't see for myself

Wheat Wizard

@BusinessCat It should it does not meet the requirements

V. Courtois

rip

Business Cat

Alright. Just asked because it's been up for 5 days with no VTDs yet

trichoplax

@BusinessCat I'm pretty sure even Haskell can't filter the integers up to the large test cases in under a minute. I've voted to delete without checking because the answer author has made no response in 5 days

totallyhuman

13:17

20

Q: Fraction to exact decimal

Write a program or function that given two integers a, b outputs a string containing a decimal number representing the fraction a/b exactly. If a/b is integer, simply output the value, without a decimal dot or leading zeroes: 123562375921304812375087183597 / 2777 -> 44494913907563850333124661 8...

Mayube

if ((Boolean.toString(condition).toLower() == "true") == true)

totallyhuman

But braingolf doesn't have floats though

Mayube

@totallyhuman it doesn't need them, it has arbitrary precision integers. It's still possible to calculate and output the correct answer in Braingolf

totallyhuman

Mm okay

PhiNotPi

@mınxomaτ I got accepted to the beta program! I think they're just being slow at accepting additional people, not being too picky about who they select.

Okx

13:27

@BetaDecay does it have to be solvable?

PhiNotPi

It also appears that I have to use some API to access the device, it doesn't have an interactive web version yet.

(Actually that link doesn't seem to be the API, just a description of the device)

I think this is the API, I'll have to check it out and figure out how to run it.

Jim

14:16

Does Charcoal use string compression?

Lembik

dear grep-xperts. I want to find all duplicates word (such as "the the") in a text document. I have run egrep "(\b[a-zA-Z]+) \1\b" but this doesn't actually tell me what the words are

is there some way to get grep to tell you which words are duplicated?

Poke

sounds like you want something other than grep

or at least "in addition to"

Lembik

oh :(

I was hoping for command line magic

Poke

well there's still hope there

Mayube

>grep-xperts

I think you mean grepsperts

totallyhuman

14:22

GrepSports

Mayube

grerpsperts

Lembik

@Mayube true

it's only because I have some long lines and it's hard to check them by eye

of course grep should really just highlight the words in the text it shows me :)

Poke

i imagine you could use something like sed <regex>| sort | uniq

Mayube

just use Vim's search

Lembik

oh! egrep --color "(\b[a-zA-Z]+) \1\b" cc-paper.tex

solved :)

totallyhuman

14:29

Ü

That's a big mouth though

Mayube

literally me

DJMcMayhem

@Mayube That's nothing

7

V. Courtois

wew

Fatalize

Well…, and even…

Poke

en.illogicopedia.org/wiki/Shrimp_paradox

New Main Posts

14:51

3

Q: Yet Unused Pairs

Let's define a sequence of positive integers a. We will define the sequence on even numbers such that the result of even numbers is a(2n) = 2a(2n-1). The odd indices of the sequence will be smallest positive integer not yet appearing in the sequence. Here are the first couple terms. 1,2,3,6,4...

code-golf sequence

HyperNeutrino

@Cowsquack No that's LOC. I'd need to golf off 3 lines, which wouldn't be hard; I could golf off 30-50 lines just by removing all of the testing code.

Adám

@Cowsquack Why the new name?

totallyhuman

Because cows do quack

HyperNeutrino

@EriktheOutgolfer Well yeah it's so that the implicit pyinclude core works because otherwise those statements aren't in the __dir__ of the core file.

I don't know a better way of doing it :P

@Mr.Xcoder I was going to do that after I fixed the 1000000 bugs :P

Erik the Outgolfer

well, I dunno why you have to do like that anyways

why not just...not always use pyinclude core or something?

Mayube

15:07

4gb of coredumps on my server, hmm

1 2g file and then 2g of 1.3M files

HyperNeutrino

@EriktheOutgolfer then I need to explicitly define all of those functions in interpreter.py which isn't any better...

Erik the Outgolfer

that's maybe why you have all those bugs ;)

I mean, instead of using core.input, use input for example

HyperNeutrino

No but pyinclude module is equivalent to from module import *.

So it is input rather than core.input :P

pyimport module is equivalent to import module. :P

Erik the Outgolfer

oh you mean inside positron

HyperNeutrino

yes

Erik the Outgolfer

15:20

(which is really python that looks like mathematica lol)

HyperNeutrino

><

V. Courtois

thanks for the chal @Mr.Xcoder :)

wip

HyperNeutrino

what about the function syntax tho

and codeblocks

if (condition) then {
    // Do stuff
} elif (condition) then {
    // Do stuff
} else {
    // Do stuff
}

while (condition) do {
    // Do stuff
}

Erik the Outgolfer

that looks like both sh and c

HyperNeutrino

foreach (iterable) do {
    // Do stuff with $1
}

Erik the Outgolfer

15:21

and that looks like ruby

HyperNeutrino

func = function {
    // Do stuff; $0 is all arguments; $1... are the individual arguments
}

Erik the Outgolfer

(the each part mostly)

Business Cat

Personally I'm not a fan of elif I prefer else if

Erik the Outgolfer

@BusinessCat stack overflow happens this way

HyperNeutrino

you can chain a bunch of elifs together but with else if it's essentially:

Erik the Outgolfer

15:23

also elif is golfier ;)

HyperNeutrino

if a:
    # do stuff
else:
    if b:
        # do stuff
    else:
        if c:
            # do stuff

then again, the way I designed my language, elif is essentially the same thing as ^

Erik the Outgolfer

it shouldn't should it?

basically this:

if a: # true1
elif b: #true2
else: #false

isn't theoretically the same as

Mendeleev

@HyperNeutrino Why did you stop working on Anyfix?

Erik the Outgolfer

if a: # true1
else:
 if b: #true2
 else: #false

HyperNeutrino

@Mendeleev Anyfix notation doesn't work well

Mendeleev

15:25

@HyperNeutrino well, I mean

the point was to make it work well

Erik the Outgolfer

also who is James--Smith?

Mendeleev

@EriktheOutgolfer HyperNeutrino's alt

HyperNeutrino

@EriktheOutgolfer Yeah they're different but the internal representation in my language is essentially that

@Mendeleev I don't have an alt. That's alexander-liao's alt.

Mendeleev

I think

HyperNeutrino

I don't have an SE alt

Mendeleev

15:25

@HyperNeutrino ...

HyperNeutrino

well actually I do now

I recreated one

Erik the Outgolfer

how about NeutrinoBot?

HyperNeutrino

It's NeutrinoBot though

Mendeleev

@HyperNeutrino The person, not the SE account

@HyperNeutrino ninja'd

HyperNeutrino

><

James--Smith was my name for everything before I decided not to care about hiding my name from public sources. I don't know why it continues to push from James--Smith even though I sign in with alexander-liao when doing git push [-u origin master].

Mendeleev

15:27

@HyperNeutrino because git config

HyperNeutrino

oh

how do I use git config

SEJPM

@HyperNeutrino you perform five different arcane rituals, which involve sacrificing your first born, to satisfy the git gods, then and only then you have a slim chance of being able to get git or any sub-commands working :p

git-scm.com/book/tr/v2/Customizing-Git-Git-Configuration ?

HyperNeutrino

hm ok

I will have to wait a while then

;P

Dennis

100 rep too late...

HyperNeutrino

Congrats! :D

Dennis

15:35

Also, looks like there's a badge I should go get.

HyperNeutrino

Yes :P

I've had Inquisitive at 29/30 for a couple of weeks now. I haven't asked a single question for a while apparently o0

Mr. Xcoder

OMG @Dennis Congrats!

DJMcMayhem

Congratulations @Dennis!

Erik the Outgolfer

@Dennis congrats

SEJPM

Is it considered a duplicate if I make a code-golf challenge that asks to implement Pollard-Rho factorization (I'd give a full spec of course), given this challenge already exists? codegolf.stackexchange.com/q/131539/55329

@Dennis congrats!

Business Cat

15:38

Congrats!

DJMcMayhem

Hmm, there's like 5 different gold badges I'm super close to getting

HyperNeutrino

hm looks like there are 0 gold badges that I'm going to get anytime soon :P

Dennis

@all Thanks! #pinggolfing

SEJPM

@Dennis You still have a quite a way ahead if you want to reach bear-level dominance over PPCG.SE :p security.meta.stackexchange.com/q/1412/71460 security.meta.stackexchange.com/q/2118/71460

Dennis

Heh, I didn't even have to click the link to get that. ;)

Erik the Outgolfer

15:41

@Dennis hmm...kinda failed starbait I see

you had to tap the link it seems though

SEJPM

@Dennis (assuming of course MartinEnder isn't your sockpuppet :p )

Dennis

@EriktheOutgolfer Nah, I used to be active on Crypto.

Erik the Outgolfer

erm, that's not crypto

SEJPM

@EriktheOutgolfer the bear is also well-known on crypto

Dennis

But I know him from Crypto.

For some reason, I used to be one of Crypto's top users. Got the swag and everything.

SEJPM

15:45

Right now you need to have about 1.7k rep to be on the first two pages on Crypto

and that's the criterion for getting swag upon graduation

DJMcMayhem

I used to be a top user on ELL (English Language Learner's)

Dennis

I have 1,661, which used to be enough.

SEJPM

so yeah, Crypto kinda has a lack of high-rep users

Erik the Outgolfer

like most sites apparently

SEJPM

@EriktheOutgolfer not every site has as many As as PPCG ;)

Erik the Outgolfer

15:46

ppcg is nothing in front of so

Mr. Xcoder

How can I set the recursion limit higher in Python? Something like sys.setrecursionlimit(..) but i don't think this and import sys is enough

Dennis

Well, getting rep on PPCG is comparatively easy.

Erik the Outgolfer

@Dennis not for everybody...;)

Mr. Xcoder

It is much easier

Dennis

@Mr.Xcoder That's it, but you might need to increase the stack if you set it too high.

Mr. Xcoder

15:48

Oh, right

Dennis

@EriktheOutgolfer Comparatively. It's easier here than on SO or SU.

Erik the Outgolfer

(why almost every starbait of mine fails >_<)

Mendeleev

@Dennis Congrats!

SEJPM

here you "just" have to solve programming challenges ;)

(or pose them)

Dennis

PPCG challenges oftentimes wind up in the HNQ. After that, it's votes for everybody.

SEJPM

15:51

@Dennis I think the insane amount of average As to Qs make them wind up on HNQ most of the time

Erik the Outgolfer

(up)votes

fortunately no downvotes, closevotes, or even deletevotes

Dennis

@SEJPM Yep. PPCG questions oftentimes get 10 answers within minutes of being posted.

Mendeleev

@EriktheOutgolfer Say that to "test if two numbers are equal"

I think it's sitting at +2/-28

Erik the Outgolfer

well I don't think the -28 is because of hnq

Mendeleev

@EriktheOutgolfer It never was on hnq, it was o bad

Erik the Outgolfer

15:54

basically I don't think you can downvote immediately after you register

Mendeleev

Most of my challenges that were upvoted got on hnq

Check out this new website I'm making

Mr. Xcoder

I think my xkcd has half of the upvotes because the question was present in HNQ

@Mendeleev Nice, got your laptop 💻 back!

Erik the Outgolfer

@Dennis if they're too trivial they get around 40 in less than 5 minutes

Mendeleev

@Mr.Xcoder Um

I don't get it

Oh, yeah, that!

Yeah, that happened. Actually a few days ago. I upgraded its screen and keyboard and stuff

so its screen is now the same resolution as my desktop computer's screens (1440x900) :P

By the way, take a look at this:

imgur.com/a/sXSgh

It was a post I made on /r/battlestations

caird coinheringaahing

Damn, your click bait got me!

DJMcMayhem

15:59

Your monitor choices pain me

Mr. Xcoder

@Mendeleev What a layout

My whole layout is my Mac 💻, and my phone just in case

Downgoat

@Mendeleev what linux distro/dm/theme are you using on left-most monitor

Mendeleev

@Downgoat Same on all monitors and computers. I'm using Arch, GNOME, Arc Dark with Arc system icons and Numix Circle app icons

Font is 10.5 point Roboto

Jim

@Mendeleev This mousepad is just ridiculous

Mendeleev

@DJMcMayhem I got them all under $12 so they don't match :P

@Jim Why?

The "employee referrals" one?

Jim

16:04

@Mendeleev It is overly too small

Mendeleev

@Mr.Xcoder Why emoji?

@Jim Is it? I haven't noticed that it's small...

DJMcMayhem

But 1080p is soooo much nicer

Mr. Xcoder

Keyboard prediction

Mendeleev

Then again, I've been using it for a year so I'm probably just used to it

Mr. Xcoder

I don't even have a mouse!

Mendeleev

16:05

@DJMcMayhem I don't have the like $400 to upgrade all three to 1080p, and I would not want mismatched monitors

@Mr.Xcoder I'm sorry

Jim

@Mendeleev You need something, like, 3 times bigger :p

Mendeleev

@Jim ehh this is ok

Mr. Xcoder

@Mendeleev I am not sorry 😐

Mendeleev

@Mr.Xcoder :P

Downgoat

@Mendeleev :| you can get 3 1080p monitor for just $400? O_o

Mendeleev

16:09

@Downgoat I was at costco yesterday and they have 24" LG IPS 1080p monitor for $130. Add in sales tax and you get about 430, but without sales tax it's 390

Downgoat

Owow I was plan on getting 1 2880x1440 monitor for $490 am I bring ripped off

Mendeleev

> 2880x1440

wat

Mayube

@Downgoat I was looking for 120hz monitors last night and found an Acer 23" 1080p 144hz monitor for $180

Mr. Xcoder

What do you all like about monitors?

Mayube

@Mendeleev it's double 720p

@Mr.Xcoder being able to see what my computer's doing, mostly

Mr. Xcoder

16:11

Isn't one screen enough??

Mendeleev

@Mayube so 2560x1440?

Downgoat

@Mendeleev yes that is you :P

Mendeleev

@Mr.Xcoder my ideal monitor is 1440p 144hz ips

Mayube

@Mendeleev 21:9?

Mendeleev

@Downgoat Kek

Downgoat

16:11

bhphotovideo.com/c/product/1216667-REG/…

Mendeleev

@Mayube no, 16:9

Mr. Xcoder

4:3 is best :P

Mendeleev

@Downgoat cheap Korean 1440p ips overclockable for 390

@Downgoat HP Omen 1440p 75hz 32" for 310

Downgoat

Yea but that look ugly and have giant bezels:(

Mendeleev

no u

Downgoat

16:14

> $799.99

PhiNotPi

21:9 is just 7:3 in disguise

Mendeleev

@PhiNotPi yes this

and "16:10" is 8:5

Downgoat

Wtf if I get monitor 2" smaller it is half the price

Mendeleev

I think people just want to compare then to 16:9

@Downgoat send pls

Downgoat

a.co/6T2iG1L

caird coinheringaahing

16:16

26

Q: Is this a candidate Calvin Number?

This challenge is a tribute to our Legendary Challenge Writer™, Calvin's Hobbies — now renamed to Helka Homba —, in the same spirit as Generate Dennis Numbers. Calvin is a pretty impressive contributor to PPCG, with the 6th most reputation overall and probably indisputibly the best challenge wri...

code-golf number sequence

look at feersums answer (deleted, 2k users only)

2

Downgoat

:/ why no onebox

Mr. Xcoder

@cairdcoinheringaahing I'll take a look at it

Mendeleev

@Downgoat no not link. send me the actual monitor. i want a screen :P

/s

Downgoat

Oh send 20,000 tin cans and I'll purchase and send

Mendeleev

@cairdcoinheringaahing Lol

HyperNeutrino

16:18

><

Mr. Xcoder

@cairdcoinheringaahing Pfff

HyperNeutrino

I just found the bug in my program

Mr. Xcoder

>_>

HyperNeutrino

it's because I was reusing a variable name

index refers to the current instruction

but then I used it in a for loop ><

Business Cat

Use i instead of index much golfier

HyperNeutrino

16:19

I used k instead because I think i is another variable

caird coinheringaahing

I really want to star spam because I've never done it before and its forbidden, but must resist urge

HyperNeutrino

Sandbox

Where you can play with chat features (except flagging) and ch...

3

Have fun starspamming there!

Mr. Xcoder

@cairdcoinheringaahing I see it's now a comment.

Mendeleev

@cairdcoinheringaahing I did it about a year ago. seems more fun than it is EDIT: NOT ANY MORE PLEASE NO SUSPEND ;-;

caird coinheringaahing

@HyperNeutrino its mainly the reaction

HyperNeutrino

16:20

(by the way don't say that, because now if someone starspams, people may think it's you)

Downgoat

@cairdcoinheringaahing why would you even feel an urge to do this evil thing I don't understand are you sheep :P

HyperNeutrino

@Mendeleev the suspension is hardly worth it, huh

Mendeleev

@HyperNeutrino yeap

Downgoat

@Mendeleev brb permanently suspending

Mendeleev

@Downgoat yaaaaaay

Downgoat

16:21

O_o isn't that bad thing

Mendeleev

@Downgoat is sarcasm

HyperNeutrino

wait why is Downgoat still a Sandbox RO

caird coinheringaahing

Don't frame me! I must leave, to avoid suspicion ¬_¬

Downgoat

@HyperNeutrino ssshhhh don't say so loud

HyperNeutrino

DOWNGOAT IS A SANDBOX RO!!!!!

better? :D

Mr. Xcoder

16:23

Much

Mendeleev

9

Mr. Xcoder

Nice

Downgoat

:O is your doggo?

Mr. Xcoder

(The dog)

caird coinheringaahing

@Mendeleev why?

HyperNeutrino

16:24

lol you've been framed

Mendeleev

@Downgoat is the profile picture lol

Downgoat

Oh >_<

Mr. Xcoder

@Downgoat No it's a goat

Mendeleev

Those were some quick stars

Downgoat

... did you just make the goat your scapegoat

2

caird coinheringaahing

16:25

I forgot to star my own dog. Don't kill me noooooo...

Mendeleev

@cairdcoinheringaahing What does your username mean?

Mr. Xcoder

@cairdcoinheringaahing Your puppo is a starbait

caird coinheringaahing

@Mendeleev chat.stackexchange.com/transcript/message/38609420#38609420

Mr. Xcoder

But it's sooo cute

Downgoat

Question: in maths, how would you represent a node's parent on a tree

Mr. Xcoder

16:30

What happened to programmer5000?

Voting stuff?

HyperNeutrino

yes

Mr. Xcoder

Oh

HyperNeutrino

if you look at the profile

it says "suspended for voting irregularities until July 15"

but best not to talk about it

Dennis

@HyperNeutrino brb fixing

Mr. Xcoder

I am far too lazy to open a new window

HyperNeutrino

16:31

@Dennis lol k

Mr. Xcoder

And go to users, and then type progra... and then click and then read.... Too much effort

Business Cat

You could be using that effort to remove bytes from code

Mr. Xcoder

My code?

If so, good point @BusinessCat

But TNB is like a magnet

caird coinheringaahing

@Downgoat pasteboard.co/GACk8bb.jpg

Downgoat

@cairdcoinheringaahing s/goats and //

caird coinheringaahing

16:36

@Downgoat scotland be crazy

Business Cat

If in a language I'm using ø to mean an empty array, is there a good character for an empty string?

caird coinheringaahing

@BusinessCat the capital?

nmjcman101

epsilon?

Adám

@BusinessCat "

Jim

From what I remember, epsilon and ø both mean "empty set", but in math and computer science respectively

I could be wrong though

HyperNeutrino

16:41

ø for empty array, Ø for empty string

ninja'd ><

Business Cat

@Adám I actually could do that, since strings are in “curly quotes”

nmjcman101

Wikipedia says In formal treatments,[1] the empty string is denoted with ε or sometimes Λ or λ. But obviously that's only for formal language theory

Adám

@BusinessCat Why are you using the Nordic letter instead of a proper empty set symbol ∅?

caird coinheringaahing

@BusinessCat stealing from Jelly?

Business Cat

Let's go with "inspired"

DJMcMayhem

16:42

I never realized there are so many: ø Ø ∅

Adám

fileformat.info/info/unicode/char/…

Business Cat

@Adám No reason in particular, but more fonts support it and it's potentially easier to type

caird coinheringaahing

I just saw the starboard with the picture of my dog 20 mins ago.

Adám

@BusinessCat Do you have an empty list also, or is that the same as an empty array?

caird coinheringaahing

Time flies when you're talking to random strangers you have never and will never meet

HyperNeutrino

16:45

@cairdcoinheringaahing never is a strong word

Business Cat

@Adám I meant list when I said array

caird coinheringaahing

@HyperNeutrino well I have family in Canada...

HyperNeutrino

ah I see

I know a mod who lives only like an hour away from me

Adám

@BusinessCat APL uses ⍬ for empty list and '' for empty string. " looks like ''

caird coinheringaahing

PPCG or any other non-important site?

HyperNeutrino

16:46

they used to live in the same city as I currently live in (but maybe not when I lived there)

@cairdcoinheringaahing Open Source

caird coinheringaahing

@HyperNeutrino imagine being neighbours with Dennis or Martin without realizing it

HyperNeutrino

lol

Adám

@HyperNeutrino I work only 20 mins away from Jon Skeet.

HyperNeutrino

:o

caird coinheringaahing

@Adám just being in the same county as Jon Skeet is enough to make me better at coding

Adám

16:48

@cairdcoinheringaahing I pass through his hometown on my way home from work…

caird coinheringaahing

@Adám accidendentally meeting on the train: "Wha wha wha head explodes"

Are there APL questions on SO?

HyperNeutrino

@Adám but not on your way to work?

Adám

@cairdcoinheringaahing Could totally happen.

@HyperNeutrino No.

caird coinheringaahing

@HyperNeutrino Britain is weird at transport

ever since Brexit...

Adám

@cairdcoinheringaahing stackoverflow.com/questions/tagged/apl Funny enough, there is not a single unanswered APL question on SO!

caird coinheringaahing

16:51

2 bytes: No

I made my profile picture better!

Adám

@cairdcoinheringaahing The answers there sound more like a yes to me.

caird coinheringaahing

@Adám each to his own

Adám

@cairdcoinheringaahing Anyway, I'm not intending to learn J or K anytime soon.

DJMcMayhem

@cairdcoinheringaahing What are you talking about? That is clearly answered

caird coinheringaahing

@DJMcMayhem I really dislike APL. Like more than I dislike Trump. Which is saying something

DJMcMayhem

16:57

... OK?

Adám

@cairdcoinheringaahing Wow. APL puts your physical wellbeing in danger?

caird coinheringaahing

@Adám no but neither does Trump. His hands are too small to press the red button

Adám

@cairdcoinheringaahing I was more thinking gradual effects like illnesses, pollution, global warming, economy, health care.

totallyhuman

that's... uhm this might not be the right place for that

DJMcMayhem

@cairdcoinheringaahing A quick reminder:

57

A: Does the Be Nice policy require SE users to "be nice" to people who are not SE users (e.g. public figures)?

Let's read that "be nice" policy: Whether you've come to ask questions, or to generously share what you know, remember that we’re all here to learn, together. Be welcoming and patient, especially with those who may not know everything you do. Oh, and bring your sense of humor. Just in case. ...

caird coinheringaahing

16:59

@Adám like this?

and fine. I've gtg anyway

Sandbox

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