The Nineteenth Byte

New Main Posts

14:08

1

Given a positive integer < 100 (from 0 to 99, including 0 and 99), output that many lockers. A locker is defined as the following: +----+ | | | | | | | nn | +----+ where nn is the locker number, in base 10. If there is 1-digit number, it is expressed with a 0 in front of it. For exam...

Riker

14:21

@flawr

mınxomaτ

TBH that looks awful, too.

Erik the Outgolfer

French fries? Really?

Phoenix

I would totally eat french fries on pizza.

Adnan

looks delicious

Riker

french fries go well on everything

Adnan

14:24

just like rice

Erik the Outgolfer

Rice pizza? Not that tasty...

Riker

it's actually quite good

you need to make it with spanish rice though, not plain white rice

Phoenix

Eeehhhhh

Erik the Outgolfer

Oh.

Phoenix

I can sort of see it.....

Riker

14:26

@mınxomaτ what do you think of ranch on pizza?

Phoenix

ABSOLUTELY GODAWFUL IDEA

NEVER DO THAT

Riker

blocks you

I personally like my pizza with bbq sauce and ranch, mixed

Phoenix

bbq sauce +1

ranch -50

My pizza is mostly normal. Bacon, pepperoni, garlic

I like white sauce tho

Riker

lol

bacon, olives, that's about it

I don't really like vegetables on my pizza

Nathan Merrill

....yeah, bacon, garlic, and white sauce aren't "normal" toppings

user165474

14:30

This reminds me of the extremely long argument about pineapple on pizza...

Nathan Merrill

like, they are delicious

Phoenix

bacon and garlic are

Nathan Merrill

but not normal

if you say "Make me a pizza", with no other instructions, do you expect bacon or garlic on it?

no, you have to specify that

Phoenix

I would have to specify any toping

Nathan Merrill

but you could easily expect red sauce, pepperoni, and maybe sausage

user165474

14:31

(cheese is implied right)

Nathan Merrill

oh, and cheese

thanks :)

Poke

@NathanMerrill probably green pepper over sausage but i agree

Fatalize

@Riker Bacon? Aren't you vegan?

Poke

pepperoni is the "default" pizza

Nathan Merrill

really? I'd be really surprised to find green pepper

user165474

14:34

I thought cheese was default.

Nathan Merrill

it depends on your price level

user165474

<shrug>

Nathan Merrill

if you're going cheap pizza, then I could agree with that

Poke

@HyperNeutrino google.com/…

just a normal google search returns a lot of pepperoni

user165474

Oh I see.

Nathan Merrill

14:35

hey, cheese takes 3rd place

green peppers 5th

and sausage 8th

(at least according to my google)

user165474

What's 2nd?

Nathan Merrill

pepperoni

user165474

Wait what's 1st then

Nathan Merrill

it takes 1st, 2nd, 4th, 6th, and 7th :P

user165474

Oh.

user165474

14:37

... :P

Nathan Merrill

although, 4th doesn't really count because it's this weird thing:

since, you know, that's the image I was looking for when I was looking for a pizza picture

Poke

reddit.com/r/AskHistorians/comments/2yk5dl/…

user165474

Yep :P

Poke

Erik the Outgolfer

@NathanMerrill 5th for me.

Riker

14:40

@Fatalize vegetarian, but yeah. I just haven't had pizza in like 2 months

and I'm not as anti-meat consumption as other people, I just choose not to eat it anymore

I'm perfectly fine with people mentioning it/friends eating it in from of me

Fatalize

I see

user165474

s/om/ont

Riker

yeah that :P

can't eat, mobile makes it hard af

user165474

s/eat/edit? :P You appear to have mobile typing troubles :D

Poke

Hyper, you're missing the trailing slash on those replaces

TuxCopter

14:44

vim supports regexes without trailing slashes

Poke

interesting

user165474

s/$/\//

user165474

:P

Poke

@HyperNeutrino i scowled and then grinned >.<

user165474

:D

Downgoat

14:46

@Riker it is great unless pizza is veggie pizza

Riker

veggies on pizza are an abomination

@HyperNeutrino >_>

user165474

wat

user165474

The regex fixing regex?

Downgoat

@Riker are you allowed to say this as mod of vegetarianism.SE :O

Riker

vegetarian != veggie lover

I basically eat carbs and rice

and tofu tamales are pretty epic

Downgoat

14:53

@Riker can corroborate, but root word is veggie

Geobits

I don't know how anyone could say veggies in general don't belong on pizza.

Riker

@Downgoat eh, true, but my point still stands

Geobits

Not even the basics like onions and bell peppers?

Riker

onions are fine

bell peppers don't taste good at all IMO

Geobits

Carbs and rice? :P

Riker

14:55

rice = rice, it's its own food group :p

Downgoat

Tomatoes are worst thing you can you can pizza

Geobits

No, that'd be fish

Riker

can't argue with that

Business Cat

I'll agree with that

Riker

I've never liked fish, but there's somethign quite disturbing about headless fish lying on your pizza

Geobits

14:56

I like fish, but on pizza? Never.

mınxomaτ

Tuna pizza is pretty good actually. If you don't mind your breath becoming a biological weapon for a day.

Downgoat

@Geobits have not tried so can't confirm

Geobits

Well, a goat might like it.

Downgoat

@Riker s/lying on your pizza// :P

Riker

good point

Downgoat

14:57

@Geobits goats are (tin can+herb)ivores

Riker

@Downgoat *tincanivores

mınxomaτ

Great. Now I'm hungry. Ordering...

Downgoat

@Riker sorry fixed :P

Riker

gas masks on, muffled voice biological weapons can't be transferred over chat right

Kritixi Lithos

We just ordered some shawarma and ate it

Riker

14:58

TIL what that is

mınxomaτ

@Riker That would be a stannumivore I guess

Nathan Merrill

I had no idea it was spelled like that

Geobits

@Downgoat Many domestic goats will also eat trash, house plants or any other items they find lying around.

Nathan Merrill

because everybody I've talked to says it like "shwarma"

Downgoat

@Riker TIL they make gas mask for cat

Kritixi Lithos

15:00

I always pronounce the first "a"

Riker

@Downgoat approvedgasmasks.com/pet-shield.htm

mınxomaτ

Works for dogs, too.

Downgoat

Question: does git have command to remove orphaned commits

mınxomaτ

@Downgoat If they are really orphaned, garbage collection will do: git gc --prune=now --aggressive

Kritixi Lithos

@Downgoat The red star matches your avatar very well

Downgoat

15:06

Expiring the reflog is not needed right? Or will git reflog break if I don't

mınxomaτ

git takes care of orphans automatically over time, technically, there's nothing you have to do

Might be a good idea to inspect the graph so you now that what you think are orphans are actually not referenced anywhere. Above command isn't dangerous though, as it just runs GC at once, instead of later.

Kritixi Lithos

@ATaco In Puzzling chat, your team userscript is causing some usernames to be invisible

ETHproductions

For example, my username is invisible, at least on my computer

Kritixi Lithos

it is on mine as well

But it reappears when I click on it

TuxCopter

Yeah weird

ETHproductions

15:14

Huh, it does. The star disappears momentarily though

Riker

@KritixiLithos team?

is it supposed to distinguish SE employees from normal mods?

ETHproductions

Wait, it only shows the person's username the first time you click on it, successive clicks don't do anything

yesterday, by ATaco

Based on This Challenge I made a userscript that arbitrarily assigns users to teams in the chat. And colors it!

Riker

ah okay

ETHproductions

The userscript is here

Riker

that sounds fun, I'll get it if it's fixed

New Main Posts

15:23

2

Q: The mad chemist and the clever programmer

You wake up dizzy in a chemistry laboratory, and you realize you have been kidnapped by a old mad chemist. Since he cannot see very well because of his great age, he wants you to work for him in order to escape the laboratory. He will give you the number of each elements that must be contained...

code-golf string ascii-art chemistry

New Meta Posts

0

Q: Code golf: is an invalid but working solution acceptable?

Suppose one answers a code-golf challenge for a language with a solution which is ill-formed according to the spec of the selected language. "But it works nonetheless with all major interpreters". Is the answer considered valid? Exemple: Challenge: print this text: Hello, World!. Solution...

discussion

ETHproductions

Not an answer: codegolf.stackexchange.com/a/117807/42545

Looks like he wanted to comment but doesn't have enough rep

Conor O'Brien

15:43

@Mego how do I get the first element of a list in Seriously/Actually?

Leaky Nun

@ConorO'Brien seriously, it's actually very easy

you just need to do F

Conor O'Brien

oh ok

Leaky Nun

docs: pop [a]: push a[0]

ETHproductions

Wow. TIL that in JS, if you sort an array while in the middle of doing .map, .filter, etc. then the function will start using the sorted order of the array. For example, if you do a=[3,0,2,1]; a.map(b=>{a.sort(); return b}), you'll get [3,1,2,3]

Conor O'Brien

yup

I think sort does it in place, right?

ETHproductions

15:49

It does, but... just... I... guess it vaguely makes sense

But why would you ever need that? (besides weird golfing scenarios, that is)

Leaky Nun

@ETHproductions it's not that you need it

it's that it's more efficient

ETHproductions

Yeah, true...

I wonder how this affects the third parameter (the original array), if at all

Leaky Nun

they are just pointers to the same array

the pointer might be different

but the value of the pointer is the same

ETHproductions

Um. Since when has JS not allowed duplicate argument names? (e.g. (_, _, b) => ...)

Maybe I've just never tried it

@LeakyNun Yes, that seems to be the case

Haha, a=[3,0,2,1]; a.map(b =>{a[2] = 5; return b}) returns [3,0,5,1]. I wonder if this could ever be useful in a code-golf challenge

Leaky Nun

>> a=[3,0,2,1];b=a;b[2]=5;a
<< Array [ 3, 0, 5, 1 ]

ETHproductions

15:55

I know, but I didn't realize that the array you're operating on is the third parameter to these functions

Easy cumulative sum algorithm: a.map((b,i)=>(a[i+1]+=b,b))

Leaky Nun

well alright

@ETHproductions so you figured out a use

ETHproductions

sighs yeah, I guess it's not so pointless after all...

Maybe I should do less ranting and more searching for explanations next time :P

Now what was that challenge where you had to fill in zeroes in an array with the previous non-zero?

Conor O'Brien

running truth or smth like that

ETHproductions

This is similar:

29

Q: Repair the ranges

Given an input of a list of positive integers with some replaced with 0, output the list with the missing numbers that were changed to 0 replaced. Characteristics of the input list: The list will always have a length of at least 2. Let us define the input list as a and the "original list" (tha...

code-golf number array-manipulation

Oh, found it:

33

Q: Cover up zeroes in a list

Inspired by this SO question As input you will be given a non-empty list of integers, where the first value is guaranteed to be non-zero. To construct the output, walk from the start of the list, outputting each non-zero value along the way. When you encounter a zero, instead repeat the value yo...

code-golf array-manipulation

New Main Posts

16:18

0

Q: Create a list of 'words' allowed

What I want In Scratch, all cloud data used as a chat room has to be processed through a 'censor', otherwise, a _whitelist This means that a list has to be made for all the words allowed. Can you create a program with an input, asking for a word. If your _whitelist contains the word, then you ar...

code-challenge

Phoenix

VTC ^

ais523

@Phoenix you needn't have called, it got voted closed by five people in three minutes

which is actually fairly impressive

Phoenix

It only had 2 votes when it was posted here.

NewMainPosts was fast

ais523

I'm also impressed that everyone managed to agree on the close reason

user165474

shorter = quicker

user165474

16:25

lol

ais523

I'd consider that challenge to be unclear, too broad, and offtopic

user165474

for(;;); versus while(false);

ETHproductions

@ais523 Actually no, three said "unclear" and two (me included) said "lacks an objective winning criterion"

ais523

@HyperNeutrino in most languages for(;;) means while(true)

there are probably languages that screw this up, but it wouldn't be usual for a for condition to default to false

ETHproductions

I think that's their point, for(;;); = run forever

user165474

16:27

That's what I mean.

ETHproductions

> Post Closed as "unclear what you're asking" by Wheat Wizard, mbomb007, Luis Mendo, Phoenix, ETHproductions

ais523

@ETHproductions while(false) doesn't run forever

ETHproductions

Wait, did they stop recording who voted what?

user165474

@ais523 My point is for(;;); runs forever and while(false); runs once.

ais523

@ETHproductions IIRC they record it for offtopic subreasons, but not for main close reasons

user165474

16:28

Just an example that shorter != faster

ETHproductions

@ais523 ah, ok

ais523

@HyperNeutrino while(false) actually runs zero times; do … while(0) is the normal way to run once

user165474

Well I mean, the lexer and parser run over it and then I think the compiler runs over it once, skips the body of the loop, and terminates.

user165474

@ais523 Or you can just call the body directly. :P

ais523

nah, it lets you use break and continue and also makes it a single statement

user165474

16:29

Unless JS has constant conditional optimization.

ais523

it's very useful, especially in generated code

user165474

Oh I see.

ais523

interestingly, in Perl 5, { … } is defined as a loop with one iteration (allowing you to use loop control constructs on it if you want to)

user165474

Hm. Interesting.

Phoenix

@ais523 So, break?

Geobits

16:31

if(bad) goto endOfLoop;

ais523

@Phoenix Perl spells it last for some reason, but yes

Phoenix

I guess it's golfier, but it seems needless

ais523

redo is also useful, especially when golfing (it restarts the current loop iteration)

ETHproductions

That seems like quite a useful thing to have in a language (Perl's {...}, I mean)

Phoenix

Oh, redo, didn't know about that.

e.g. Java only has break and that's it

Geobits

16:35

@Phoenix and continue, which is very often useful.

Kritixi Lithos

break LABEL is surprisingly very useful

Phoenix

In Java? I didn't know that.

I've uh, been using break LABEL instead

@KritixiLithos That's not a loop construct

that's just a block construct

Geobits

I try to avoid break label as much as possible.

It makes me feel icky.

Kritixi Lithos

@Phoenix I was just saying

@Geobits There have been certain scenarios when I had no solution other than break label

Geobits

Yeah, me too, but I always look to see if there are ways around it. Usually it's an inner-loop scenario.

Kritixi Lithos

16:38

those scenarios always happen inside loops

Geobits

I mean nested loops. Like you need to break all the way out of the outer one, from the inner.

ais523

labelled break isn't even hacky, I don't think; it's easily the clearest way to break out of multiple loops

Leaky Nun

CMC: given an array of length n^2 (e.g. [a,b,c,d]), return e.g. [[a,b],[c,d]].

Geobits

@ais523 I agree with that, but using them for just about anything else raises flags in my brain.

Fatalize

@LeakyNun what a rewe supposed to return if n = 3?

Geobits

16:40

[[,,],[,,],[,,]]

Leaky Nun

@Geobits yes

Geobits

Return a square array from a flat one :D

ais523

@Geobits is it even possible to use them for anything else? I didn't realise they were syntactically legal in other cases

Geobits

Well, I mean, you can use them inside single loops, or like phoenix said, use them where you should have a continue instead.

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Backstory You wake up dizzy in a chemistry laboratory, and you realize you have been kidnapped by a old mad chemist. Since he cannot see very well because of his age, he wants you to work for him and only then, you can escape the laboratory. Task It is your task to return a structural formula ...

Geobits

16:42

It's weird what people can come up with.

Kritixi Lithos

you can also do continue LABEL?

Geobits

I've... never tried that.

Fatalize

@LeakyNun Brachylog, 7 bytes: l√ℕ:?ḍ₍

Geobits

But I don't think so.

Phoenix

@KritixiLithos You put a named block that takes up the entire loop and then break the block

user165474

16:44

Python, 70 bytes: def f(x):k=int(len(x)**.5);return [[x[i:i+k]for i in range(0,k**2,k)]]

Geobits

@Phoenix twitch

Kritixi Lithos

@Phoenix then what's the difference between break and continue?

Leaky Nun

@HyperNeutrino why don't you try jelly?

user165474

break exits the loop; continue skips the rest of the loop and goes back to the top

user165474

@LeakyNun Good idea.

Phoenix

16:45

continue skips to the end of the loop and restarts

The named block is inside the loop

user165474

I'm still working on the square root simplifier

Leaky Nun

@Fatalize why does √ give a negative number?

Riley

@LeakyNun 05AB1E 4 bytes: Dgtô

Leaky Nun

@Riley how does it work?

Fatalize

@LeakyNun √ is ~^ rather than the math definition really

Leaky Nun

16:47

@Fatalize please

Fatalize

to be fair if ḍ wasn't stupid and failed instead of crashing on negative numbers, you wouldn't need ℕ

Riley

@LeakyNun Duplicate, get length, sqrt, split in pieces of that length

Leaky Nun

@Riley I see

Fatalize

@LeakyNun what?

Leaky Nun

@Fatalize please make it positive

@Fatalize and where did a go to?

@Fatalize yeah it's ᵐ now, can you show me how to use it?

Fatalize

16:53

@LeakyNun Making it non-buggy would be better

user165474

@LeakyNun Jelly, 5 bytes: sLÆ½$

Fatalize

@LeakyNun It applies to the previous predicate

it also obviously work if the previous predicate is {...}

Leaky Nun

@Fatalize heh, I thought you need a colon

Fatalize

and it's like that for all metapreds (the superscripts)

ais523

@LeakyNun that was Brachylog 1

Brachylog 2 makes much lesser use of colons

Rod

16:55

@LeakyNun Python 41: lambda a:zip(*[iter(a)]*int(len(a)**.5)) - TIO

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Electron Configurations: Orbitals code-golf chemistry Challenge Given an elements atomic number as input, output its short electronic configuration. Explanation http://www.chemguide.co.uk/atoms/properties/elstructs.html To come Examples Sodium: 11 [Ne] 3s1 Helium: 2 1s2 or [He] ...

user165474

@LeakyNun See my Jelly answer; is it golfable?

Leaky Nun

@Fatalize can you do it declaratively?

Fatalize

@LeakyNun What do you mean?

your CMC?

Leaky Nun

yes

I'm having this (I know what I need to fix, but not how to fix it)

Fatalize

17:05

@LeakyNun this

Leaky Nun

Why would the default of ^ be 0?

Fatalize

^ by default is X^Y if Input = [X,Y]

ais523

₀ is often a special case

Fatalize

that default = 0 is because I'm dumb and I initially made chose that default = 0 for all predicates

but it's actually not true for most predicates

just for the first ones I did

and I'm lazy to fix it

Leaky Nun

@Fatalize out-golfed

Fatalize

17:09

Well that's actually clever

now there are two people beating me at Brachylog, great...

Leaky Nun

still longer than your imperative approach

you would need to have a "is_square_array" constraint ;)

ais523

the idea is to partition into equally sized partitions, where the number of partitions equals the size of each partition?

Fatalize

the imperative one is also faster

Leaky Nun

@Fatalize how can declarative be faster than imperative?

Fatalize

because I don't know how to write

Leaky Nun

17:11

you win

ais523

if \ asserted that the array was square

err, not square, rectangular

like I suggested a while back

~c.\l~l would probably work, unless I'm missing something

Fatalize

@ais523 nope: Z = [[1,2],[3,4,5,6,7,8,9]]

ais523

right, that's because \ is a bit more lenient than I'd like atm

New Main Posts

2

Q: 579085261 is CRAZY, 725582 is GOLF, 10757494 is ...?

Your task is to translate a 103-smooth number into an English word, using the method described below. How? Generate the list of prime factors (with repetition) of the input number. Sort the list: If 2 is not one of the prime factors, sort the list in ascending order. If 2 is one of the prime...

code-golf string primes cipher

Poke

@ATaco wat

what is this red/blue team business

New Sandboxed Posts

17:19

0

A: Sandbox for Proposed Challenges

ASCII Hues Hello again PPCG, you all may or may not be familiar with a color scheme known as HSV... which stands for Hue Saturation and Value. Depicted above are the "angles" of hue from 0 to 360, and their respective colors. For this challenge you will be taking in a picture for your input,...

Phoenix

It's a usercript

@Poke github.com/TehFlaminTaco/TacosUserscripts

Install TeamSpirit

Jan Dvorak

Does it work already?

Phoenix

When did it not work

Jan Dvorak

It still doesn't

Phoenix

Tampermonkey or Greasemonkey

ETHproductions

17:22

Works fine for me in Tampermonkey (Firefox 52, Windows 7)

Jan Dvorak

It's dependent on one of Taco's other scripts, I can't remember which one and I don't care to install it.

Mistah Figgins

doesn't work for me on tampermonkey on chrome

I also have his other userscripts

and reloaded

Jan Dvorak

He promised to fix it today

Phoenix

Huh

Poke

do i have a color

Phoenix

17:24

I'm on mobile, can't tell which color you are

Mistah Figgins

@Poke you have an odd user number, thus you are blue.

Jan Dvorak

So, I am red? Ragequit!

Phoenix

Red team best team

Poke

@MistahFiggins I am content with this.

Phoenix

14 hours ago, by ATaco

ais523

17:28

can you please not put obtrusive oneboxes in chat?

that's just a big red rectangle that's hard to ignore

Kritixi Lithos

it appears quite small for me

Jan Dvorak

vote remove

Kritixi Lithos

Oh, it's chat users (the colours of the stars)

Mistah Figgins

it's also on the starboard

Geobits

@MistahFiggins Wait, I thought this thing was supposed to be based on PPCG user numbers to go with the red/blue challenges on the site? Is it based on chat user numbers?

Mistah Figgins

17:35

no

Poke

1.9k 5 25

code-golf string binary restricted-source sequence math number

Geobits

Then why did someone say I was red? My PPCG user is odd, but chat is even.

Mistah Figgins

do I have red/blue mixed up again?

Kritixi Lithos

^^ same for me

Geobits

@MistahFiggins I don't know, that's why I'm asking :P

Mistah Figgins

> If it is odd, you are on the blue team.
> If it is even, you are on the red team.

I'm on red, poke is on blue

Kritixi Lithos

17:37

Phi has an odd user number on PPCG, but he's blue

Geobits

So this is a lie?

18 hours ago, by ATaco

@Geobits You're Red.

Mistah Figgins

you are blue @geobits

I think it's a lie

or mistake

Kritixi Lithos

I think it's the chat user ID, I'll find some proof

Business Cat

Odd is blue, even is red

Jan Dvorak

If only the userscript worked, hint hint @ATaco

Kritixi Lithos

17:39

Guys, here: github.com/TehFlaminTaco/TacosUserscripts/blob/master/…

even chat users are red, the rest are blue

Geobits

Boo, it should use the main site ids

Kritixi Lithos

I want to be blue, the star doesn't match with my avatar

Poke

ooo Geobits is blue too..? Can I switch?

Geobits

I'm supposed to be blue, but the script is flawed imo

It doesn't match the teams on either red/blue challenge on main.

Riker

@KritixiLithos can it be disabled on the starboard?

it's kinda annoying there

Kritixi Lithos

17:43

disable what?

Riker

the team colored stars

Kritixi Lithos

btw I think it's this line: github.com/TehFlaminTaco/TacosUserscripts/blob/master/…

Riker

thanks

yea @ATaco it breaks some names

Kritixi Lithos

do you know why it breaks some names?

Riker

nope

but it specifically breaks "Aurora0001", in a single msg (not part of a block) with "@Riker" at the beginning

and "Mithrandir" with a reply at the beginning

(aurora and mith are the usernames)

Mithrandir

17:53

'

Kritixi Lithos

Maybe the star takes up too much space?

Mithrandir

@Riker what are we talking about here?

Riker

a team spirit userscript

that puts colored stars before names

Mithrandir

Oookkaayyy?

Riker

yea

it breaks some names though

looks like the star takes up too much space, making people's names show up as just a colored star

Mithrandir

17:56

I've always wanted to be a star...

Riker

lol

Transcript for