The Nineteenth Byte

TùxCräftîñg

7:00 PM

@ArtOfCode it's not random films. it's all films about vehicules.

halp Rust is stupid¹

flawr

> rust is stupid

citation-provided

El'endia Starman

@ConorO'Brien The parser class is what picks out the relevant information, like username, user id, message content, etc.

Conor O'Brien

@El'endiaStarman Like, I literally need the raw stuff--the basic words

El'endia Starman

@ConorO'Brien You could almost do that with regex, in fact.

Conor O'Brien

@El'endiaStarman I am doing it with regex.

I have the parsing down--I just need the raw text.

El'endia Starman

7:05 PM

Yeah, you'll be missing a few closing </div> tags, then.

Conor O'Brien

@El'endiaStarman this is for a predictive text corpus.

I'll filter out all html tags and stuff

difference between parsing and filtering.

El'endia Starman

@TùxCräftîñg This isn't parsing, though.

TùxCräftîñg

ah

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@ConorO'Brien geobits does

Conor O'Brien

@EᴀsᴛᴇʀʟʏIʀᴋ oh?

El'endia Starman

7:09 PM

Regex can't be used to parse HTML in essence because it can't keep track of how far its recursed. Thus you'll always have problems with stuff like nested <div>s. If what you're looking for doesn't have that problem, then you can use regex. In this case, Conor is looking for everything between <div class="content"> and </div>, basically.

Eᴀsᴛᴇʀʟʏ Iʀᴋ

Feb 7 at 6:43, by Geobits

Behold! The Nineteenth Byte in all its glory!

Conor O'Brien

ah

Eᴀsᴛᴇʀʟʏ Iʀᴋ

Also, 1 minute ago I hit 2k!

TùxCräftîñg

congrats

Releasing Helium Nuclei

Dat zalgo SO regex html thingy answer.

Rohan Jhunjhunwala

7:13 PM

Lol

TùxCräftîñg

4427

A: RegEx match open tags except XHTML self-contained tags

You can't parse [X]HTML with regex. Because HTML can't be parsed by regex. Regex is not a tool that can be used to correctly parse HTML. As I have answered in HTML-and-regex questions here so many times before, the use of regex will not allow you to consume HTML. Regular expressions are a tool th...

H̸̡̪̯ͨ͊̽̅̾̎Ȩ̬̩̾͛ͪ̈́̀́͘ ̶̧̨̱̹̭̯ͧ̾ͬC̷̙̲̝͖ͭ̏ͥͮ͟Oͮ͏̮̪̝͍M̲̖͊̒ͪͩͬ̚̚͜Ȇ̴̟̟͙̞ͩ͌͝S̨̥̫͎̭ͯ̿̔̀ͅ

Rohan Jhunjhunwala

How do I parse html with without zalgo singing the soung that ends the world

my favorite stack overflow question

TùxCräftîñg

@RohanJhunjhunwala tokenize html with regexs, and then parse with a recursive parser

Rohan Jhunjhunwala

@TuxCrafting why??? Just use the proper tools for it

TùxCräftîñg

a tokenizer and a parser... ?

Rohan Jhunjhunwala

7:15 PM

From what I understand shouldn't you avoid trying to parse html with regular expressions.

TùxCräftîñg

why do i get a mismatched type error with let var: f64 = 0; ಠ_ಠ

Releasing Helium Nuclei

@RohanJhunjhunwala Ye

Rohan Jhunjhunwala

HTML is provably not pasable with regular expressions

orlp

@TùxCräftîñg cuz 0 is integer?

Rohan Jhunjhunwala

because html is technically a cfg

orlp

7:16 PM

try 0.?

TùxCräftîñg

halp Rust is stupid

Rohan Jhunjhunwala

that is a good public service message to run far far away from loosely typed languages :D

flawr

14 mins ago, by TùxCräftîñg

halp Rust is stupid¹

Releasing Helium Nuclei

<p>paragraph<div>div is true HTML. It shows two different paragraphs.

TùxCräftîñg

halp Rust module system is stupid

orlp

7:17 PM

@RohanJhunjhunwala depends

valid html isn't

TùxCräftîñg

@ReleasingHeliumNuclei it's invalid html

orlp

proof: ids need to be unique

CFGs can't encode that

flawr

@TùxCräftîñg take the oxygen away and you don't have to worry about oxidation anymore

TùxCräftîñg

.____________.

Rohan Jhunjhunwala

@orlp

http://stackoverflow.com/a/1758162/5167161

1504

A: RegEx match open tags except XHTML self-contained tags

I think the flaw here is that HTML is a Chomsky Type 2 grammar (context free grammar) and RegEx is a Chomsky Type 3 grammar (regular grammar). Since a Type 2 grammar is fundamentally more complex than a Type 3 grammar (see the Chomsky hierarchy), you can't possibly make this work. But many will ...

Releasing Helium Nuclei

7:20 PM

@TùxCräftîñg w3.org/TR/html5/syntax.html#optional-tags p's and last elements' end tags can be omitted

orlp

@RohanJhunjhunwala well that answer is wrong in the strict sense

Rohan Jhunjhunwala

oh

orlp

html ID attributes need to be unique

CFGs can't express that

if you allow invalid html

then yes

<div id="test"></div><div id="test"></div>

this is illegal html

Rohan Jhunjhunwala

will it work in a browser?

orlp

<div id="test"></div><div id="toast"></div>

this is legal html

yes it will work in a browser

Rohan Jhunjhunwala

7:21 PM

Will illegal html still produce output?

Releasing Helium Nuclei

@RohanJhunjhunwala my code snippet?

orlp

so will anything really

Rohan Jhunjhunwala

so then, isn't it provable that regexes can't parse all html?

TùxCräftîñg

@RohanJhunjhunwala in html everything produce output

Rohan Jhunjhunwala

I understand that

<foo>GARBAGE</foo> will still output, and thus is technically valid html. A regex html parser would have to parse it.

also see this relevant answer

875

A: RegEx match open tags except XHTML self-contained tags

Don't listen to these guys. You actually can parse context-free grammars with regex if you break the task into smaller pieces. You can generate the correct pattern with a script that does each of these in order: Solve the Halting Problem. Square a circle (simulate the "ruler and compass" metho...

TùxCräftîñg

7:25 PM

> Almost there - just divide the whole thing by zero. Easy-peasy.

( ͡° ͜ʖ ͡°)

Releasing Helium Nuclei

jsfiddle.net/j1s3qyp4/1 html is weird

TùxCräftîñg

htnnl is vveird

Rohan Jhunjhunwala

:D

Releasing Helium Nuclei

Oops

But that doesn't change the fact.

:p

TùxCräftîñg

why on the earth i get stars for this ಠ_ಠ

Rohan Jhunjhunwala

7:28 PM

:(

Helka Homba

@RohanJhunjhunwala Maybe read the next highest-voted answer. Depending on Conor's situation regex may be enough, maybe not.

TùxCräftîñg

ಠ¯ಠ

Rust is more stupid than itself

Releasing Helium Nuclei

> is like asking Mr. Bean to write an operating system

3 mins ago, by TùxCräftîñg

why on the earth i get stars for this ಠ_ಠ

Rohan Jhunjhunwala

@Helka Homba, yes, I do not disagree, that can work. I am saying that under most use cases one shoot avoid using regular expressions to parse html. While under sertain circumstances you can get away with it, it should be avoided in favor of a more practical apporach. But in the end a regex can be a vaible solution on some hyml

TùxCräftîñg

> hynnl

is better

Releasing Helium Nuclei

7:32 PM

> waible

flawr

Comon nod eferiwon häs dhime for lucking ät de kybord

Alex A.

I have a Bash question if one of the resident experts is around (cough @Dennis cough).

zyabin101

@flawr hwat

Dennis

@AlexA. Gesundheit

Alex A.

@Dennis Hello

Dennis

7:35 PM

Hi!

Alex A.

Oh sorry, I mean chirp

3

Dennis

Feel free to chirp your question.

Alex A.

Okay so I'm trying to Bash. I have a file full of garbage with a piece I'd like to extract.

flawr

This Can't Be Real

►

Alex A.

x = [
    "a", "b",
    "c", "d",
]

I need the crap between the brackets

with the quotes and commas removed

jammed into an array

Helka Homba

7:37 PM

a b c d

there you go ^

Dennis

@AlexA. What else is in the file?

Is there only one crap with brackets around it?

Alex A.

nope

Rohan Jhunjhunwala

@flawr is that real?

Alex A.

@HelkaHomba Flawless

Dennis

@AlexA. And you want all of them?

Alex A.

7:39 PM

Nope, just the one that starts with x =

flawr

@RohanJhunjhunwala Yep, some are really good at imitating sounds.

Alex A.

@flawr This is me. People always tell me I have a disturbing laugh for a bird.

flawr

And here we see alex with his dog:

Australian Magpie Playing

►

3

Rohan Jhunjhunwala

@flawr that's crazy, it sounds so artificial. But thats usch a preety bird so friendly :D

Releasing Helium Nuclei

cat file | awk '/x = [/{f=0} f; /]/{f=1}' | sed -e 's/"//g" -e 's/,//g'

Not tested

Rohan Jhunjhunwala

7:43 PM

@flawr have you heard of a kookaburra?

Dennis

@AlexA. Could the stuff between quotes contain ]?

Alex A.

Nope

All lowercase letters

zyabin101

@flawr I'm sure this isn't Alex. Look at his SE profile.

It's not Australia. ;)

Alex A.

@ReleasingHeliumNuclei Something in here is unmatched because when I press enter it prompts for more input

flawr

@RohanJhunjhunwala Never met one in person, but heard of them

TùxCräftîñg

7:45 PM

omg Rust is stupid it not allow _ as a identifier

@Rust plz fix urself

Rohan Jhunjhunwala

I actually saw one when I went there for vacation, at the zoo, both inside of a cage, and a wild one.

Alex A.

@TùxCräftîñg It uses _ as the fallback case for match blocks, so it can't be used as an identifier

Rohan Jhunjhunwala

@TuxCrafting what legitimate reason is there for _ as an identifier

Alex A.

_ => ...

Rohan Jhunjhunwala

even java wised up and deprecated it

TùxCräftîñg

7:47 PM

those mutable/immutable bindings are mindfcking me

brb

Joe Z.

somebody pinged me

Alex A.

I still haven't figured out Rust's str/String/&str fiasco

Releasing Helium Nuclei

@AlexA. sed -n '/test1/,/test2/p' | sed -e 's/"//g" -e 's/,//g'? :/

Joe Z.

I checked the log and apparently somebody said they were me...?

Releasing Helium Nuclei

Copied from SO

Joe Z.

7:48 PM

I do not have and have never had a second account here; whoever said that was flat out lying

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@JoeZ. it was a joke

Dennis

@AlexA. x=($(tr -d \\n|grep -Po '(?<=x = )\[.*?\]'|grep -Po '\w+'))

Joe Z.

it's one I fail to see the humour in, unfortunately

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@Downgoat halp github borked but blag no halp

Alex A.

@JoeZ. In fact, impersonating another user is a big no-no network-wide

@Dennis My grep doesn't have -P ;-;

Dennis

7:50 PM

@AlexA. ~~Install a better OS.~~ One second.

Alex A.

grep (BSD grep) 2.5.1-FreeBSD

Releasing Helium Nuclei

Wow someone who runs BSD

Alex A.

OS X is based on FreeBSD

Eᴀsᴛᴇʀʟʏ Iʀᴋ

^

Alex A.

I'm on OS X

Eᴀsᴛᴇʀʟʏ Iʀᴋ

7:52 PM

os x is objectively best os

Releasing Helium Nuclei

Oh...i had hope

Eᴀsᴛᴇʀʟʏ Iʀᴋ

why would you hope somebody used freebsd

Releasing Helium Nuclei

Isnt OS X' new name mac OS?

Alex A.

Yeah

flawr

@AlexA. So now it is PriceyBSD ?

2

Alex A.

7:53 PM

It was MacOS, then it was OS X, now it's going back to macOS

@flawr Haha basically

Dennis

@AlexA. x=($(tr -d \\n|grep -Eo 'x = \[[^]]*\]'|grep -Eo '\w+'|tail -n+2))

Alex A.

I have to declare -a x first, right?

ArtOfCode

I'm tempted to try triple-booting Mac, Linux and Windows...

Dennis

No.

flawr

@ArtOfCode Why not TempleOS...

ArtOfCode

7:55 PM

@flawr why not what now

that's why

Alex A.

@ArtOfCode I have a Bootcamp Windows partition but my girlfriend and I used the same copy of Windows for our partitions, so whenever we both boot into Windows, Windows freaks the fuck out.

It accuses us both of being thieves

ArtOfCode

@AlexA. what's new?

Alex A.

Technically only one of is since it's a legitimate copy of Windows

ArtOfCode

isn't that a standard part of installing Windows?

trichoplax

@JoeZ. Just to let you know, as someone who saw the message out of context without reading through the transcript, I immediately assumed it was a joke. Not to say it's funny, but to let you know I doubt many people took it for a serious statement.

ArtOfCode

7:56 PM

it calls you every criminal under the sun

and then you get a virus that tells you that you have to pay the police $100 because you've been watching bestiality or something equally weird

Alex A.

@Dennis Where do I put the filename?

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@ArtOfCode osxmasterrace

Alex A.

@ArtOfCode Bonzi Buddy is a tattle tale

ArtOfCode

@EᴀsᴛᴇʀʟʏIʀᴋ wat

Alex A.

"OS X master race," I think is what he meant

ArtOfCode

7:59 PM

oh

Yeah, still a nope on that one. I'm dual-booting Ubuntu and Windows.

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@AlexA. >_>

Dennis

@AlexA. That reads from STDIN. Either redirect STDIN or prepend cat <filename>| to the tr command.

Eᴀsᴛᴇʀʟʏ Iʀᴋ

> isn't that a standard part of installing Windows?

i can tell you like ubuntu a bit better

Releasing Helium Nuclei

Arch Linux masterrace

ArtOfCode

@EᴀsᴛᴇʀʟʏIʀᴋ they all have their place

Alex A.

8:01 PM

I set up an ElementaryOS VM recently and I quite like it.

ArtOfCode

Mac's place is currently squashed under Windows' heel, in the mud, but hey, it's a place.

flawr

@ReleasingHeliumNuclei Is Linux not holy enough for you? Do you really need Arch Linux?

Alex A.

@Dennis The output of echo $x is blank :(

Releasing Helium Nuclei

@flawr you took that seriously? i mean, the whole masterrace things?

flawr

Lol, I don't even know what a masterrace is.

Releasing Helium Nuclei

8:03 PM

it means WE ARE BETTER THAN YOU LOL U SUCK

Alex A.

@flawr It's what the Nazis considered themselves to be, which they used to justify ethnic genocide

flawr

Oh, I always assumed it was some sort of racing race.

Releasing Helium Nuclei

lel

flawr

Ok well that explains a lot

Alex A.

Well, you know, gotta go fast

zyabin101

8:04 PM

@ReleasingHeliumNuclei exempt

Alex A.

After all, what is this, One Fast, One Furious?

flawr

If nazis are after you, you sure do.

zyabin101

@EᴀsᴛᴇʀʟʏIʀᴋ exempt

flawr

@AllGuitarristsHere: Do you play classical music?

Alex A.

No, I've always wanted to learn classical guitar but I've never been able to read music well enough to do it.

Also all of my guitars are steel strung, and classical guitars are nylon strung

trichoplax

8:06 PM

@AlexA. Is that because they are from the old days before steel was invented?

flawr

But steel strings do not per se inhibit you from playing classical music?

zyabin101

@flawr Yup, mainly exempt. disappears

Dennis

@AlexA. Swell. Try removing the tail command.

flawr

@zyabin101 What the heck is this supposed to mean?

zyabin101

@flawr I'm exempt

flawr

8:08 PM

@zyabin101 From what?

Alex A.

@flawr No, but the tone is way wrong with steel strings. Plus classical guitars have more space between the strings than typical steel strung guitars.

zyabin101

@flawr from that.

From the guitar question thing.

Alex A.

@trichoplax Actually guitar strings, as with the strings of other instruments, used to be made from cat guts.

Releasing Helium Nuclei

@zyabin101 u wot m8

trichoplax

@AlexA. Like tennis rackets?

Alex A.

8:09 PM

Tennis rackets used to be made of cat guts?

Brutal

trichoplax

Only the strings...

flawr

@AlexA. Oh I didn't know that, so the non-classical guitars are meant to be played with picks only?

TùxCräftîñg

b4ck

Alex A.

@flawr Not necessarily. Plenty of people play "regular" guitars without a pick. But classical guitars are basically never intended to be used with a pick.

@Dennis Still blank

flawr

@AlexA. Haha, I've been doing everything wrong then :D

Alex A.

8:11 PM

xD

That's not to say you can't; everyone has their own unique style of playing ;)

flawr

Perhaps it'd be a good idea to take lessons at some point.

Dennis

@AlexA. And if you replace the + with a *?

flawr

@AlexA. But first you have to be able to play at all=)

Alex A.

@Dennis Same thing

@flawr Well, I suppose that does help, yes :P

TùxCräftîñg

plz halp how do i create a vector with n empty elements in Rust?

Vec::<u8>::with_capacity(n) dont work

Dennis

8:13 PM

@AlexA. Does the file look exactly like you described? It's working fine for me, even with POSIXLY_CORRECT.

Alex A.

@flawr Case in point: youtu.be/6eLARjLNsiU

zyabin101

(Phone|I've) gotta sleep, see you around.

Alex A.

@Dennis Well, it's testname instead of x and stuff like linalg and fft instead of a, b.

Otherwise yes

TùxCräftîñg

@everyonewhoprograminoxygenpropelledlanguage plz halp

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@AlexA. NUUUUUUUUUU

that's just mean. :/

Dennis

8:17 PM

@AlexA. Also exactly one space between testname, =, and [?

Alex A.

uh

yes

trichoplax

@EᴀsᴛᴇʀʟʏIʀᴋ You should probably avoid studying history...

Eᴀsᴛᴇʀʟʏ Iʀᴋ

yes

i've already seen bad things done to cats

Alex A.

@Dennis It's this for reference

Eᴀsᴛᴇʀʟʏ Iʀᴋ

the tuna crisis of 2007

Dennis

8:20 PM

@AlexA. That says testnames with an s at the end.

Work for me.

$ x=($(< choosetests.jl tr -d \\n|grep -Eo 'testnames = \[[^]]*\]'|grep -Eo '\w+'|tail -n+2))
$ echo ${x[@]}
linalg subarray core inference keywordargs numbers printf char string triplequote unicode dates dict hashing iobuffer staged offsetarray arrayops tuple reduce reducedim random abstractarray intfuncs simdloop vecelement blas sparse bitarray copy math fastmath functional operators path ccall parse loading bigint bigfloat sorting statistics spawn backtrace priorityqueue file read mmap version resolve pollfd mpfr broadcast complex socket floatapprox datafmt reflection regex float16 combi…

If that doesn't work, try this. x=($(<choosetests.jl tr -d \\n|grep -Eo 'testnames = \[[^]]*\]'|grep -Eo '[a-z]*'|tail -n+2))

I think \w is a GNU extension.

Alex A.

I get testnames :/

Helka Homba

Alex A.

Dark

Dennis

Even without the tail?

Alex A.

Yep

Dennis

8:24 PM

>.<

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@HelkaHomba ._.

Alex A.

@Dennis Well, it doesn't work for me locally to test but I'll ultimately be running it on an Ubuntu VM, so maybe that's okay. I'll boot up my Ubuntu VM and see what happens.

Helka Homba

TùxCräftîñg

@HelkaHomba star 4 you (cant star)

Helka Homba

The url makes it look like I have 67 stars

Eᴀsᴛᴇʀʟʏ Iʀᴋ

8:29 PM

@HelkaHomba is me

how you get picture

get out of my house

no vulpines allowed

Helka Homba

@EᴀsᴛᴇʀʟʏIʀᴋ found on giphy.com/gifs/cat-nope-bye-G5h04AkAvAHcs

Eᴀsᴛᴇʀʟʏ Iʀᴋ

brb telling them to move security cameras

Helka Homba

oh

ΛεγίωνΜάμμαλϠΨΠʹ

google.com/search?q=inurl:yolo+site:youtube.com+-inurl:redirect

^ YouTube videos with YOLO in their URL

(case insensitive cuz' gOoGlE)

TùxCräftîñg

halp how do i default value on arguments with rust

Eᴀsᴛᴇʀʟʏ Iʀᴋ

8:44 PM

@AlexA. is this accurate depiction of baby magpie?

 >(ö)<

ArtOfCode

you're missing the constant "feed me feed me" chirping

TùxCräftîñg

wat

Rust is stupid

Eᴀsᴛᴇʀʟʏ Iʀᴋ

true

IanC

guys, maybe a stupid question, but what does the chat name "Nineteenth byte" stands for?

tried to google it, and the closest I found to programming puzzles was a dude asking how to find the 19th byte of a file he downloaded

TùxCräftîñg

The Nineteenth Hole is a thing in (normal) golf

IanC

8:48 PM

ooooh

TùxCräftîñg

and fun fact: The Nineteenth Byte is 19 bytes long

IanC

thanks!

haha

TùxCräftîñg

1

A: Print an alphabet wave

C (86 bytes): for(int c=-11,n=-26;++n<1;){while(c++){printf("%c%c",90+n,n?91+n:65);}c=-11;puts("");} My first attempt on a Code Golf challenge. Some answers are really impressive!

why the spces at the start?

@IanC

IanC

I think I "overspaced" when identing it as a code :p

just edited it!

TùxCräftîñg

@Rust u r stupid

ΛεγίωνΜάμμαλϠΨΠʹ

8:52 PM

You know, once I went to a planet on NMS where the sentinels (small flying robots with lasers) were actively hostile

Not very helpful considering that I was trying to find a place to save the game

TùxCräftîñg

> (small flying robots with lasers)

ΛεγίωνΜάμμαλϠΨΠʹ

@TùxCräftîñg yes, NMS has small flying robots with lasers

TùxCräftîñg

i want this game

ΛεγίωνΜάμμαλϠΨΠʹ

@TùxCräftîñg It's like US$60

TùxCräftîñg

60€ exempt

ArtOfCode

8:55 PM

you also need a fairly powerful computer to run it

TùxCräftîñg

i think my laptop can run it

8GB of ram, GTX950M and i7

ΛεγίωνΜάμμαλϠΨΠʹ

Yeah, it's been running with only a few lag spikes since I set the max FPS to 60

@TùxCräftîñg that should be plenty

Alex A.

@IanC One of the original moderators, dmckee, named it. In regular golf, the nineteenth hole refers to the bar at the end of the golf course. And we count things in bytes. Thus The Nineteenth Byte was born.

2

ΛεγίωνΜάμμαλϠΨΠʹ

Ima go play it

IanC

@AlexA., I get it now! Creative name :)

Alex A.

8:59 PM

Yeah! We are forever indebted for his contribution both to the initial health of the site as well as to naming the most important part of PPCG.

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