The Nineteenth Byte

00:01

praxis is when you break things and the more you break things the more praxis it is.

ASCII-only

00:45

> Because of a bug in the day 6 puzzle that made it unsolvable for some users until about two hours after unlock, day 6 is worth no points on the global leaderboard.

:|

oh wait ninja'd

@Dennis *Interpreted language, you know what i mean >_>

@Draco18s i'd say eval is useful in esolangs

day 5 was surprisingly easy

El'endia Starman

01:10

@ASCII-only I thought so too.

ASCII-only

like... even in c

using a linked list like betseg would make it easy if done right

hmm. should i be preparing utility functions for the upcoming aoc

Bubbler

01:32

@ASCII-only I'd just use Python: Batteries Included™

ASCII-only

python is terrible

also not available online

Skidsdev

ouch

ASCII-only

~~i should really put more effort into making a good programming language~~

Skidsdev

same

ASCII-only

~~as in better than python~~

Skidsdev

01:36

I have yet to make one better than brainfuck

Bubbler

Define "better than python".

ASCII-only

unrelated: some of the names on the AoC global leaderboard sound familiar

@Bubbler more easy to use than python's so called "easy to use"

Skidsdev

@ASCII-only there's a private leaderboard for ppcg folk

I forget who set it up

ASCII-only

more powerful than python, a way more massive standard library, implicit imports in certain modes

@Skidsdev betseg, but no i mean the global leaderboard

Skidsdev

@ASCII-only define more powerful

Bubbler

01:38

Python is way too powerful already, no?

ASCII-only

how about not powerful enough >_>

Skidsdev

fastest growing language 3 years in a row, 2nd most popular language on both GitHub and stackoverflow

ASCII-only

like you need a million builtins to do code jam with it

@Skidsdev that's just because it's relatively easy to learn

not the easiest to learn, but more people already know it than for other powerful languages so more people teach it imo

Bubbler

@Skidsdev I guess the most popular one is JS for both

ASCII-only

charcoal is in python. why? because dlosc was better at python than other languages. although i was an idiot and never gave him a chance to contribute >_>

Skidsdev

01:40

@Bubbler Actually I think Java is still the most popular on SO

ASCII-only

@Skidsdev ...ew

SO why

Skidsdev

@ASCII-only agreed

Bubbler

^

ASCII-only

that's to be expected though. Java, Python and C/C++/Haskell are the languages most commonly taught in uni

but seriously? everyone. pls use C# instead of Java already

also, wow. hyperneutrino and doorknob are in the top 100

unihedron as well, and betaveros (and petertseng, kinda) a sounds familiar. cameron aavik used to be on TNB

Pavel

I can't imagine many unis teach Haskell, it's pretty out there

More probably teach assembly

ASCII-only

01:43

@Pavel nah haskell is only for compiler courses

Skidsdev

also you'll be a little lucky to find a uni teaching python, they like outdated curriculums...

ASCII-only

nope

Pavel

@Skidsdev Oh they teach Python alright

ASCII-only

well, not where i live

Pavel

You just have to be lucky enough to get Py3

feersum

01:45

The most weird thing to me is that many unis teach C++.

Skidsdev

@feersum what's weird about that?

feersum

Very inappropriate for beginners.

Skidsdev

many would argue otherwise

feersum

Straight C is much more educational.

Skidsdev

right but they want to fit object oriented stuff into the curriculum too

"C with classes"

feersum

01:46

@Skidsdev In addition to what?

Pavel

@ASCII-only Oh you know what, I just had the thought that eventually compiler courses will start migrating towards Rust

ASCII-only

@Pavel why?

feersum

Isn't Rust a giant hodgepodge of features like C++?

ASCII-only

remember, they aim for simplicity, not performance

if anything, perl would be a better choice

Skidsdev

@feersum in addition to teaching a commonly used language, probably teaching some core low-level fundamentals depending on the course

Pavel

01:48

It has the type inference features of Haskell, and also really cool lifetime tracking for compile-time memory management

ASCII-only

both perl and haskell's syntax/paradigm make lexing asy iirc

Skidsdev

and it's "fast"

ASCII-only

@Pavel but the syntax/builtins are very, very, very different

Pavel

Rust isn't easy to parse so much as it just has a really fucking cool compiler

feersum

@Skidsdev C++ does not force you to learn anything low-level (on the surface...). C makes the students actually have to understand pointers.

ASCII-only

01:49

@Skidsdev "fast" doesn't matter here, otherwise unis would all be using PyPy

@Pavel nah i mean it's easy to write a parser in haskell

especially considering template haskell is a thing

Skidsdev

@feersum doesn't force, no, but it's a hell of a lot more low level than say C# or Java

ASCII-only

@Skidsdev kinda but not really

Pavel

C# has all the same low-level features as C

feersum

@Skidsdev It would be more accurate to say that it allows to mix different levels.

ASCII-only

you can go more low level, but really all you need to remember for C++ is new goes with delete and boom, you've turned C++ into a high level language. in fact (IIRC) you don't even need new and delete. possibly

Skidsdev

01:51

I mean you can always go more low level

C? Nah ASM. ASM? Nah Straight Machine Code. Machine code? Nah just flip the bits on the disk platter

feersum

@ASCII-only Huh? That's how you turn it into C.

ASCII-only

@feersum wait what :|

crap ignore me then

ok. what are utility functions i'll need for aoc

Skidsdev

I mean you also need to stop using classes entirely to turn it into C

ASCII-only

except pods

Pavel

C has structs

You can even stick function pointers in 'em

OOP C is totaly possible

ASCII-only

01:55

it might be hacky, and look a little weird, and be a little clunky, but yeah. basic OOP is possible

the problem with this theoretical language idea i have that is intended to be more powerful than Python: idek if it will actually work. in fact, i don't even know how to start on the parser >_>

Arnauld

@Skidsdev Well, there was a time where programmers were literally 'flipping the bits on the disk platter' ... except they were called punch cards. :p

ASCII-only

and back then a "disk platter" was just a fancy type of tableware if anything at all

Pavel

Got to look at the insides of a punchcard machine once

Apparantly they detect the holes in the cards mechanically with magnetic particles rather than optically like a scantron

Arnauld

But then comes ... the 5MB hard-drive \o/

El'endia Starman

@Pavel I would have never guessed that. Actually, I don't think I even thought much about how punch cards work.

ASCII-only

02:01

@Pavel did optical detection technology exist back then though

Pavel

@ASCII-only Invented by IBM in 1937

@Arnauld Did you hear about the 16TB HDD being announced recently

Arnauld

Vaguely. I didn't read the articles.

Pavel

Me neither

Skidsdev

did you guys hear about the atomic hard drive IBM made?

Arnauld

I can barely fill 1 or 2 TB.

Skidsdev

02:06

it uses only a single atom to store a single bit of information, making it the most space efficient data storage in existance

ignoring the fact that it needs an observatory-sized electron microscope to read/write said bits

ASCII-only

@Arnauld and then there are some with 1tb of music :P

Pavel

@Pavel Which, even at its invention, was used for the sole purpose of grading tests automatically.

Skidsdev

I have 2TB of games

ASCII-only

@Skidsdev *a STM? wait no, microscopes wouldn't be able to read that

Skidsdev

and 1.5TB of audio clips, music samples, sound libraries and VST plugins

Pavel

02:08

du /?

ASCII-only

@Skidsdev you could make it more efficient by using a smaller atom :P

Skidsdev

it uses the orientation of a single Holmium atom’s magnetic field

@ASCII-only yeah but modern hard drives utilize roughly 100,000 atoms to store a single bit (According to IBM)

also they chose holmium due to its powerful magnetic field created by “many unpaired electrons.”

ASCII-only

@Skidsdev yeah of course. we don't have the technology to read more finely

@Skidsdev they chose one that was more easy to make work, not a smaller one

Skidsdev

IBM figures that it can store the entire iTunes catalog (all 35 million tracks) onto a disk the size of a credit card by using this technique.

ASCII-only

just from the surface area?

Skidsdev

02:12

It currently requires a liquid nitrogen-cooled tunnelling electron microscope operating in a vacuum to work

which by the way, is easily one of the most sci-fi movie phrases I've ever heard

ASCII-only

as in like... 2050 sci-fi instead of 2500 sci-fi?

feersum

Meh, needs a "superconducting"

ASCII-only

and a "quantum"?

Skidsdev

"iridium"

The system uses atoms of holmium seated atop a magnesium oxide surface, which keeps the atom's magnetic poles stable -- even in the presence of other magnets.

So no drive distruction by powerful magnet

Veskah

We Adeptus Mechanicus now, boys. Make sure to say your holy litanies before uttering "Play Despacito"

Nathan Merrill

02:30

Since when is physical storage space an actual limitation?

surely the rest of the computer is far more limiting than the amount of room that hard drive takes

Veskah

A limit to what?

Skidsdev

@NathanMerrill there are standards around hard drive size, so making it smaller allows one to fit more storage in the same standardized size

@Veskah Praise Tzeench

@NathanMerrill Also I'm pretty sure this tech isn't for consumer drives, it's for highly specialized massive-scale data storage

Veskah

@Skidsdev Filthy Heretic

Nathan Merrill

Right, for consumers, it's about price, not physical limitations

Skidsdev

@Veskah jokes jokes, I'm all about the Greater Good

Nathan Merrill

02:33

most consumers aren't buying high-density drives because they don't need them

however, I don't see why massive-scale data storage needs it either

Veskah

@Skidsdev Filthy Blueberry :^)

Skidsdev

@Veskah Filthy Clanker

Nathan Merrill

because the land is surely cheaper than all of the equipment needed to store in such a small area

Veskah

Big data ain't a misnomer. And there's only so much rack space.

At least before you have to buy another rack

Nathan Merrill

I agree, it takes up more room. But once again, is it going to be cheaper to buy an acre of land and more racks, or a highly-sophisticated state-of-the-art storage device?

It's not about room, it's about price

Veskah

02:39

Yes, early adapters have always paid a premium, no one was surprised.

Nathan Merrill

Yeah, but I don't think the price will ever compare (at least, in our era). I may be wrong, but that's my prediction

Veskah

You're probably right, we're pretty good at putting magnetic sand on a platter. However, those with bottomless purses might have good reason to grab these

Skidsdev

it's IBM

they did it to prove they can

in it's current form it'll likely have zero practical application in any industry

because it'll have abysmal IO speeds too

Nathan Merrill

Right. It's really cool. I just don't think it's practical :)

And I also thing there another application for tiny storage moving forward into Internet of Things

Veskah

Bleh, IoT

Nathan Merrill

02:44

but the reader needs to be just as small as the actual storage

Veskah

SoC armed with flash memory are pretty good these days

Skidsdev

@NathanMerrill I mean we have NAND storage for that stuff

ignoring the global shortage of NAND memory

Veskah

Don't worry, the companies who make it totally won't gouge the price in the meantime.

It's different than last time :^)

Nathan Merrill

Yeah, but say in 20 years, could we fit a computer in a shoelace? When computers get really tiny, I could see that having interesting use cases

Veskah

Depending on what you're defining computer as, we're already there.

This random SoC I found is 4x4x0.65 mm

nxp.com/docs/en/data-sheet/MC9S08SU16DS.pdf

PDF warning, I guess

Nathan Merrill

03:02

That's not bad. All you really need to add to that is wireless communication and wireless charging. Because, do you really want to plug in your shoes at night :)

Draco18s

04:20

@ASCII-only Oh, sure. My esolang is just weird enough that having it eval is super weird. Multiple simultaneously executed instruction pointers is madness enough without having each one of those IPs also be executing subworld copies of another program with its OWN multiple simultaneously executed instruction pointers.

Skidsdev

so when it comes to C, what's the general consensus here on GCC vs Clang?

Veskah

One starts with a G, the other one starts with a C

And you are writing in C so the choice is obvious

Draco18s

That, or you're trying to commit cuicide.

ASCII-only

@Skidsdev they're competing with each other, so tbh not much difference. but generally people prefer gcc i think?

@Draco18s so... kinda like charcoal's lambda functions (yes, functions, not eval)

Dennis

For code golf, gcc is a clear winner though. clang requires return statements.

Skidsdev

04:29

@ASCII-only fair. I've found competing arguments and benchmarks for both, some showing GCC is better, some showing Clang is better

Draco18s

@ASCII-only Only familiar with Charcoal in that "I've seen other people post with it"

Skidsdev

@Dennis while that is good to know, I'm not at the point of golfing in C just yet

ASCII-only

oh yeah. gcc probably has more extensions

Skidsdev

gcc comes standard with pretty much every Linux distro, so I've been using that thus far

ASCII-only

@Draco18s well. charcoal functions are a half-assed feature. i doubt anyone has used them on PPCG before. ever

@Skidsdev :|

Skidsdev

04:30

I was just wondering if it was actually worth considering clang

ASCII-only

@Skidsdev nope

never

Pavel

@Skidsdev Clang has more helpful error messages and GCC has better optimizations

Dennis

I prefer gcc, but I must admit that clang has much better error messages.

ninja'd

Skidsdev

so use gcc until I run into a tricky error, then compile with clang. Gotcha \s

ASCII-only

huh. gcc really needs to up their debug game i guess

Anonymous

04:34

IIRC clang does better in benchmarks, but GCC has more extensions and has better support and availability.

Anonymous

And supposedly it's much easier to write an LLVM backend than a GCC backend

ASCII-only

yeah, because llvm is modular iirc

it's why there is such an insane number of llvm backends

Riker

05:11

John McAfee

@officialmcafee, House McAfee

If you believe that anyone, at any time, for any reason, ever, gives money away to total strangers, then you deserve to get scammed.

25.6k tweets, 879k followers, following 13.3k users

@quartata new person for you to aspire to be ^

@Skidsdev my personal experience tends to be that clang is much stricter, erroring on things that are warnings in gcc

can't really say that's a general thing though

ASCII-only

wait when did day 7 come out

oh just now

Nathan Merrill

6 days after day 1, I presume

quartata

@Riker i already did this

apologies for the lack of content over the last couple hours...i just released a new version of my Antivirus Software and as usual the trolls spiked ny tomato juice and put me on a plain to Honolulu

Tweeted by quartatertots on June 24, 2018 at 2:51 AM

@ASCII-only llvm frontends are easy. backends suck

@Pavel have you seen sun.misc.Unsafe

Pavel

05:28

@quartata Yes and I don't think it quite counts

quartata

no of course not just having a giggle

i wonder how that gets compiled down in gcj

Pavel

I heard they were going to remove it in java 9 at one point

No idea if they actually went through with that

quartata

@Riker in case you didnt know mcafee is actually 100% serious. he really is that insane and terrible

Bubbler

Today's part 2 was frustrating as hell

Downgoat

@Riker how much coke does this man do

quartata

05:39

@GoodTipLeaver @CryptoIsse @J34512063 @missmayn @RationalMale I don't do cocaine. It's a yesterday drug. If I were to do uppers, I would choose one of the hundreds of Chinese research chemicals of the Cathinone class. Legal, and make's Cocaine feel like weak coffee

Tweeted by officialmcafee on November 13, 2018 at 2:09 AM in reply to GoodTipLeaver

FrownyFrog

06:03

ugh

who boasts about doing weak coffee

my grandma probably tried it

Pavel

@quartata In case anyone's wondering, Cathinone is a schedule 1 drug and illegal in most of the world, including the US

quartata

mcafee does not care for your laws

~~he is a fugitive from justice~~

ASCII-only

06:29

goddamnit

doing AoC on mobile is hard

and one small mistap can lead to all progress lost :|

ASCII-only

06:46

also :/ :/ day 7 part 2 is too hard

idk where i'm messing up. i can tell that i did, just i'm bad at debugging js

Pavel

[generic JS is bad joke]

ASCII-only

wait nvm

Bubbler

I messed it up four times, and I had to wait for 5 minutes (it happens after 4 wrong answers) 3 times.

ASCII-only

lol, that's what's happening to me now

i probably should stop submitting solutions i know are wrong

Jo King

I made some pretty dumb mistakes too

ASCII-only

06:58

see, this is why we need a better language

Jo King

At first, I only had 4 workers, and I forgot to take into account the last step's time...

ASCII-only

haha

Bubbler

Protip: get all the rules right, then try the sample input with exact same conditions

ASCII-only

i forgot about the last step's time too

oh wait

... you can use the sample

i did that on codejam (because you have to) but forgot to do it here

goddamnit

wrong again

Bubbler

I found that I was getting +1 than expected at the very first tick

Damn off-by-one errors

ASCII-only

07:01

i'm getting it right for the example tho

wait

i'm using 4 workers as well

lol XD

Bubbler

lul

ASCII-only

wait no

oh wait. i didn't try the example with 2 workers

finally

darn off-by-one errors

my insanely bad code is now on hackmd

wonder if i should use a different language every day from now on

> 7 stars

> behind anon with 3.5 stars

yay me

Bubbler

That's just a problem with private leaderboard

ASCII-only

well i can change ordering to sane ordering

@dzaima why 6.5 stars

Bubbler

> changes ordering to global score

Mmm

betseg

07:16

0

ASCII-only

:P

betseg

im #1 in local score :P

ASCII-only

i have to settle for ordering by stars

dzaima

@ASCII-only all i could manage before running to the bus

Bubbler

For star ordering, you can take the top by waiting in front of your PC

The problem is that you have to do it every day to keep the top

ASCII-only

07:20

@Bubbler waiting?

Bubbler

until the next problem opens

ASCII-only

well. same with every ordering

like... i have 7 stars but am below average in all but star ordering

betseg

after a week or so youll be above average

its coz you started late

dzaima

i've done that for the past 2 days but i only have 10-15 mins before i have to go :/

ASCII-only

> you'll be average after a week or so

that's not for a while :P

@JoKing any progress on leap years?

betseg

07:23

i did an O(n) solution for day 5 while in maths class trying to keep nice notes and it was my peak for aoc

ASCII-only

@betseg peak?

betseg

greatest moment and probably wont do anything as good as that

again, for aoc

ASCII-only

greatest moment?

Jo King

@ASCII-only No, i haven't looked at it much

ASCII-only

doesn't look like we can get much further with current approach though. hmm

Jo King

07:26

I probably should have recorded my programs for aoc... I just deleted them afterwards

Yeah

betseg

@ASCII-only every other challenge was something like O(n!^n!) and with time on hand so yeah id consider doing O(n) with no time a good thing™

ASCII-only

@JoKing nah not like aoc is anywhere near as impressive as code jam

@betseg wait. wat

betseg

only slight exaggeration

ASCII-only

@betseg mine are like... O(n^2) max. well maybe n^3 for more stringy ones

ASCII-only

07:39

@JoKing hmm. i'm trying the second form of "Junctions can also be used to terminate sequences with side effects" but have no idea how to translate it fully, it can potentially be 25 bytes

Jo King

@ASCII-only I don't think that one's applicable. the condition stuff ends up on different numbers than the printing

ASCII-only

yeah :/ was seeing if there was any way to short cicruit

New Main Posts

07:55

1

Q: Number that can eat itself

Given a positive integer, output a truthy/falsy value as to whether the number can eat itself. Rules Leftmost is the head, rightmost is the tail If the head is greater than or equal to the tail, the head eats the tail and the new head becomes their sum. If sum>=10 then the head is replaced by...

code-golf

ASCII-only

08:09

also. this is just sad

someone on code-golf.io pls learn lisp >_>

Arjun

@ASCII-only I know it's irrelevant, but what does your avatar really depict? Is it a bird? Or two mountains separated by two valleys?

ASCII-only

:|

i did it really badly didn't i

Arjun

what's it supposed to be?

ASCII-only

here

Jo King

i assumed it was a face, not specifically a cat's

ASCII-only

08:22

hmm. maybe i should make it a 5x5 ASCII art or something :P

Arjun

@ASCII-only I see. One less question to take to the grave.

FrownyFrog

some people have no idea that ^^ is eyes

ASCII-only

and not a double caret :P

FrownyFrog

surprising fact

Arjun

@FrownyFrog I don't get why they are eyes.

FrownyFrog

08:24

by convention

ASCII-only

this js leap years is tough too :/

lisp though, i'm the only one there >_>

Arjun

@FrownyFrog What's the convention for the mouth?

ASCII-only

it's the closest ascii equivalent to -^

@Arjun it's a convention, not the convention

Arjun

what's a convention for the mouth?

ASCII-only

@ASCII-only this face would (probably?) be ^u^ in ascii

o/O/u is also common for the eyes and v/w/_ for the mouth iirc

Cows quack

09:03

for aoc 7b why can't worker 2 start E as soon as it is finished with F?

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Compressed RSA keys cops-and-robbers number-theory primes Silly cops-and-robbers idea. As computers get more powerful, RSA keys have grown longer and longer to maintain security. This makes it difficult to: hand out your encryption key on business cards recite it over the telephone quickly s...

Jo King

@Cowsquack Step D must be finished before step E can begin.

ASCII-only

this helps for js in leap year

Cows quack

@JoKing ooh now it makes sense

Neil

10:49

@Pavel Thunderbird's MIME code is written in OOP C. People are scared of it :-(

betseg

11:45

blogs.windows.com/windowsexperience/2018/12/06/…

edge as an electron app

Quintec

12:38

@ASCII-only I tend to use ^.^ becuase it’s more recognizable as a face and looks cuter

New Sandboxed Posts

13:08

0

A: Sandbox for Proposed Challenges

Not a challenge, but not certain of the wording so trying it out here: Tips for golfing in JSLint tips javascript code-golf What general tips do you have for golfing in JavaScript restricted to satisfying JSLint with default options? I'm looking for ideas that can be applied to code golf p...

Dennis

@Pavel Not Cathinone, chemicals of the Cathinone class ("bath salts"). Bupropion, e.g. is sold as an antidepressant.

New Meta Posts

13:59

0

Q: What are our standard-defining posts?

What are the posts on meta that specify rules or standards every user should know?

discussion faq-proposed

Adám

14:21

@Quintec It is also valid and meaningful APL.

Cows quack

15:05

I finihsed aoc 7b, it was extremely awful

betseg

i got a nice head start in the first 5 days but it seems like ill lose the first spot

Skidsdev

yeah I had trouble with AoC 3a and just sorta gave up :P

Pavel

15:29

@Quintec I'm more of a fan of ^-^

Quintec

15:49

@betseg Ay, I'm representing hard

Alion

16:37

@betseg What is this?

betseg

@Alion PPCG's advent of code leaderboard on a browser extension i found

firefox chrome

Nathan Merrill

17:16

I thought it was a historical listing of visible chat stars. Which also sounds rather interesting

Pavel

@NathanMerrill You could use TNBDE

Uh, anyone know SQL?

Quintec

17:29

Yay gold ranking on halite.io :D (Team PPCG step up your game :P)

J. Sallé

@Pavel got some working knowledge. What do you need?

Blue

Is anyone good at regex? I'm trying to write a regex that doesn't match strings that contain ( unless it's preceeded by \ So \( matches but ( doesn't.

betseg

markdown.

\\\( ?

dzaima

^([^(]|\\\()*$?

Blue

That looks like it still doesn't catch the (

I'm effectively trying to implement backslash escaping

Pavel

17:40

@J.Sallé "A historical listing of visible chat stars."

Cows quack

anti-matches of (?<!\\)\(?

dzaima

@Blue an example where it doesn't work?

Arnauld

Generic form: /^(AB|[^B])*$/ but both \ and ( have to be escaped.

(so, what dzaima said)

dzaima

alternative answer: ^(\\.|[^(])*$

Blue

Oh, it appears to work, though the online tester was odd

J. Sallé

17:46

@Pavel in which order? Most to least starred?

Pavel

I guess

30 mins ago, by Nathan Merrill

I thought it was a historical listing of visible chat stars. Which also sounds rather interesting

Cows quack

@Cowsquack or matches of ^(?!.*(?<!\\)\()

J. Sallé

@Pavel is this it?

I limited to 50 results because query times are limited to 10s, but I think even 150 results would still run under that

dzaima

@Pavel I more interpreted as a history of the stars visible on the starboard per-day or something, and i don't think tnbde isn't able to do that

Skidsdev

18:02

Wait.. he wasn't always called Leaky Nun?

J. Sallé

@Skidsdev I'm getting a 404 error from that link

Skidsdev

@J.Sallé ooohh yeah I forgot people with low enough rep can't see deleted posts

HyperNeutrino

18:51

lol I was running through SO LQ review queues and tried commenting on a post

turns out it was an audit and i got pranked ;-;

Dennis

Does that count as success or fail?

HyperNeutrino

well, the comment failed and it said "this is an audit" so I just gave it a Recommend Deletion and passed :P

because the post was already deleted + locked lol

Oliver

19:27

Is there a golfy way to use a variable inside of a JS regex match?

Example: s.match`users\/([^\/]*)\/oliver"` -> I want to replace oliver with a variable.

New Main Posts

1

Q: P Pr Pre Pref Prefi Prefix Prefixe Prefixes

Given some finite list, return a list of all its prefixes, including an empty list, in ascending order of their length. (Basically implementing the Haskell function inits.) Details The input list contains numbers (or another type if more convenient). The output must be a list of lists. The s...

code-golf array-manipulation function functional-programming

flawr

@FrownyFrog Why did you delete those entries? codegolf.stackexchange.com/posts/177147/revisions

dzaima

@flawr they don't include the empty first array

flawr

Ah I see

dzaima

ran into the same problem in both apl and canvas too :|

flawr

19:36

@FrownyFrog it might be worth adding the reason to the edit summary in a case like that

dzaima

i wonder what percentage of answers will be shorter if written without the starting element

flawr

@dzaima start a new challenge? :D

AdmBorkBork

Stupid PowerShell

13

dzaima

@flawr too duplicate-y

Pavel

@AdmBorkBork :O

AdmBorkBork

19:50

What? It's perfectly logical to love something you sometimes think is stupid

Arrays in PowerShell suck

flawr

@AdmBorkBork and still I hate myself

AdmBorkBork

Aww, don't say that. :)

flawr

:D

dzaima

is it reasonable to require that the submission is the only function in the program (besides the main one) and that the stack is empty on its calling?

Dennis

Imho, no and no.

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