The Nineteenth Byte

Qwerp-Derp

03:09

@Downgoat How do I make a custom syntax highlighter for Gitbook?

Downgoat

:O C9 has Vim mode

@Qwerp-Derp simply write gitbook plugin adding highlightjs plugin

(or just find a language which highlights close enoguh)

Qwerp-Derp

So I just make a separate file with the highlight.js code?

How do I put the highlighting in MD then?

@Downgoat Halp pls

@PhiNotPi That's because Mars is 'uuuuuuggggggeeee.

Downgoat

@Qwerp-Derp toolchain.gitbook.com/plugins/create.html

mınxomaτ

Oreo's shake seems to be pretty healthy: imgur.com/a/mVgHZ

3

Helka Homba

@JonathanAllan Don't delay, sun walking supplies are running out!

Jonathan Allan

03:22

:)

Maltysen

@mınxomaτ crustaceans!?

mınxomaτ

I know right. how

Downgoat

@mınxomaτ i.e. water for americans :P

Helka Homba

@mınxomaτ Those crunchy bits ain't cookies

mınxomaτ

I mean that's almost one litre of pure diabetes.

Maltysen

03:26

@mınxomaτ nah, 2600 calories is barely a single days worth :P

Downgoat

dumb question: how to login as root without sudo command?

Maltysen

su

Downgoat

wtf

root password is not wokring

mınxomaτ

@Downgoat Huh what do you mean? Open a login shell and login with username: root.

Downgoat

shit root user is locked after too many incorrect tries

halp what do i do

to unlock root user I need root perms

this is fucking stupid

mınxomaτ

03:29

What? What system locks the root user?

Maltysen

^

Downgoat

apparently centos does

@mınxomaτ I've disabled root access over ssh

I have a terminal from DO

but that logs in as my normal vihan account

mınxomaτ

Use sudo -i then. But re-enable SSH root and disable login with password.

Downgoat

Long story short: I messed up /usr/bin perms so I can't use sudo

now I can't do anything to fix it without root perms

mınxomaτ

Reinstall.

You have been doing many, many things wrong to get to this point.

Downgoat

03:32

like?

@mınxomaτ that's not exactly possible :/ this is the server running entire vihan.org and some other stuff

Helka Homba

This may balm your Su/Sudo wounds @Downgoat

Maltysen

@Downgoat ...wow

is this a server you have physical access to?

If so, a live cd might work

mınxomaτ

@Downgoat Well if you didn't backup your server, that's your fault.

@Maltysen It's a DO VPS

4 mins ago, by Downgoat

I have a terminal from DO

Downgoat

Wanna know how I got here? NPM wasn't installing packages in correct dir so without thinking I did what an SO answer proposed and did chown vihan:vihan /usr/bin

or something like that

Maltysen

@mınxomaτ Do they let you boot from a recovery partition?

Downgoat

03:34

yes

Maltysen

try that and editing back /usr/bin

Downgoat

ok ill try

@mınxomaτ I did do backup

but i relized a bit late and backup is messed up too

I think I should probably copy /www folder and try on new VPS

mınxomaτ

Why a new one? Backup, reinstall.

Downgoat

yeah but the thing is server is still able to correctly serve content and all so I don't want to shut it off rn

ok I've got into a recovery partion

but it doesn't have a /usr/bin folder

Maltysen

no, you mount the orginal partition

and work on the /usr/bin on that

Downgoat

03:40

?

mınxomaτ

Mount the partition. Your /.

Maltysen

the recovery partition is like a completly different hard drive than your original one

you need to fix the original one

Downgoat

well yeah i know that much

am I not copying /usr/bin from recovery partion to original?

mınxomaτ

E.g. if / was on /dev/sda2, then mount /dev/sda2 /mnt and work there.

Downgoat

thats what i do when i bork my mac

mınxomaτ

03:41

@Downgoat Well, you have to mount a partition before you can read it.

Downgoat

:| how do I find where mount is kept

they are like 100 stuffs in dev

mınxomaτ

@Downgoat Post the output of df -h here.

Downgoat

> df: invalid option -- 'h'

mınxomaτ

Just df then

Downgoat

mınxomaτ

03:45

Uhm, what hard drives do you see in /dev ?

@Downgoat That means your main partitions aren't mounted yet. Now we need to find them.

Downgoat

can't exactly show all here because the list is getting truncated

mınxomaτ

Make a screenshot of ls /dev/s*

@Downgoat Yeah, probably not. You'd have to have hundreds of drives for that list to be trunced.

Downgoat

no sda stuff

mınxomaτ

@Downgoat Hm. Do ls /dev/v*

Downgoat

mınxomaτ

03:48

Mount vda1

mount /dev/vda1 /mnt

Downgoat

do i need to mkdir /mnt?

mınxomaτ

Yes.

Damn, CentOS is weird.

Downgoat

:D ok my file system is in /mnt now

mınxomaτ

Are your files there?

Downgoat

yup

though if I chown here, I'm not sure which kernel's root it will use

El'endia Starman

03:51

....I just wrote four ternary conditionals in JS as A : B ? C... >_<

Maltysen

@Downgoat you can chroot first

mınxomaτ

@Downgoat Also, DO offers an advanced recovery shell that's extremely easy to use (e.g. to reset SSH root): digitalocean.com/community/tutorials/…

Downgoat

I am surely doing something completely wrong

mınxomaτ

Your shell is restricted. Probably a busybox.

Downgoat

yes it is

mınxomaτ

03:56

Can you manually run /mnt/usr/bin/bash?

Downgoat

oh that's a smart idea

mınxomaτ

If you can't, please follow the DO guide I posted above. (They'll give you a real bash)

El'endia Starman

...how does JavaScript not have a built-in, sensible rounding function that returns a number rounded to any precision you like...?

Downgoat

crap can't load an object file

@El'endiaStarman ... yes it does

Maltysen

@El'endiaStarman toFixed

El'endia Starman

03:57

@Maltysen Returns a string. That's the thing.

Maltysen

@El'endiaStarman just *1

3.5673.toFixed(2)*1

El'endia Starman

Where's the sense in requiring JS developers to cast back to a number after rounding?

This seems like a terribly simple thing to fix in the source code, and yet...

Maltysen

well toFixed does to string in purpose

it adds trailing 0's as needed

Downgoat

^

it'll also scientific notation if needed which needs string

El'endia Starman

Hmm, point. So really, the solution is to make Math.round accept a second argument.

Downgoat

04:00

wait, what senario are you in, in which being 0.00001 makes big difference

are you making pioneer probe?

mınxomaτ

Anything that requires precision is probably not a good application for JavaScript.

Downgoat

^ trye

Maltysen

@Downgoat yeah NASA is using avocadOS now

El'endia Starman

I don't want high precision. I want convenience and sensibility. Rounding a number to a given precision and getting a number back seems like such a no-brainer function to have. Instead we get rounding to an integer and rounding to a given precision which returns a string.

Downgoat

function roundToPrescision(num, prec) {
    var a = Math.pow(10, prec);
    return Math.round(10 * a) / a;
}

@El'endiaStarman ^

i can golf if needed

though JavaScript is weakly typed

the way it's so weakly typed is the reason it has it's crazy string/number coersion

if it returns a string just treat it as a number and it'll conform

or if you really want to have it be a number just add a + in front of it

El'endia Starman

04:06

I went ahead and used the +(x).toFixed(y) method. I'm just saying it should be built-in.

jQuery doesn't even have it, I don't think.

Jonathan Allan

@Dennis I can't work out how, but what about a logical or with the truthy indexes of the lowercase O indexes instead of the not application at indexes?

Downgoat

@El'endiaStarman why parens around x?

Jonathan Allan

(*of the truthy indexes of the bits of the lowercase O...)

El'endia Starman

@Downgoat I dunno. I guess I don't need them.

Anyway, mobile users! Try this out! play.starmaninnovations.com/mobileTilt

Dennis

@JonathanAllan That would be at least two bytes (turn indices into Booleans, OR). The conditional application is also two bytes.

I tried generating the higher 3 and lower 5 bits of each octet separately, but it was 4 bytes longer...

Jonathan Allan

04:16

So we can't avoid a ¤ or other chain separation?

oh well

Dennis

We can use the one that's already there, but I think it would still be 33 bytes.

Jonathan Allan

yeah

I still confuse myself about how to get the right tacit approach

often I write code with a number of links and then try a bunch of stuff, rather than work it out ahead of time.

orlp

so apparently

pepe the frog is now associated with hate groups

why? :(

betseg

Wat

:(

Dennis

@JonathanAllan I think I got something. The current version seems to have an error though.

Jonathan Allan

04:31

@Dennis preemptive congratulations on reaching 100K!!

my update or your current version?

Dennis

Should be the same.

Jonathan Allan

oh, so my update (by your current version, I meant your working solution, rather than posted)

Dennis

Nevermind. I shouldn't try testing things from my phone.

Jonathan Allan

it's possible I got the base 250 or chars wrong since I have to do it by hand char by char using copy and paste form a list of the codepage from notepad

like if I do a compess I get the unicode for a bunch of characters and then convert them using to ord in Jelly then c+v them to make the string... kind of painstaking

Dennis

But the idea I had doesn't work since it would require padding the array of truth values. (I wanted to replace ¬^...Ṭ¤ with =...Ṭ¤.)

Jonathan Allan

04:35

oh and convert to int(x,16) inn python of course :p

Dennis

Gotta get up early tomorrow. I'll call it a night.

Jonathan Allan

oh, yeah and doing it in reverse would still cost a byte

OK tc

feersum

The sad life of Jelly coder. Pasting characters one by one, constantly consulting the arity lookup table, ...

Jonathan Allan

@feersum well I should be able to do it all from my cmd line - but I cant get it to display

so it's the sad life of a Jelly coder lacking basic Windows skill.

feersum

Huh? To do what?

Jonathan Allan

04:38

Compressing strings or numbers

feersum

I don't know what that's about but it doesn't seem to affect the activities in my list.

Jonathan Allan

oh and typing Jelly is possible if you set up a keyboard layout, which I also have not done, but c+v for an 11 byte solution is not much overhead :p

feersum

I mean, you have to do those things even if you aren't compressing stirngs or numbbers.

Jonathan Allan

you could also type it in hex and then convert

feersum

lol

Jonathan Allan

04:40

two characters per byte

Helka Homba

How Elon Musk makes money:

Ashwin Gupta

urgh.

I've got a problem. How can I keep my JS script executing after window.location change

Downgoat

@AshwinGupta It is possible to do that but if you do something is probably wrong with the way you're approaching the problem

what are you trying to do?

Ashwin Gupta

04:56

@Downgoat I'm trying to use this site mp3juices.cc to download any song I want using the simple function call download(song_name, song_artist).

My aproach is to use DOM to put the strings for name + artist in the search bar

Downgoat

so why are you using window.location for that?

Ashwin Gupta

then download the first one.

Downgoat

oh

you can't do that for basic security

Ashwin Gupta

@Downgoat getting there. The end goal is to download my spotify playlist songs automatically from a big list of music

Downgoat

imagine if I had website which window.locationed to your facebook and posted whatever

Ashwin Gupta

04:57

@Downgoat hm. Well that would be not good.

Downgoat

you should try to find whatever endpoint the search button or whatever is using or maybe even page stripping

Ashwin Gupta

lol, so what should I do?

Ok, I've been looking through the source code of the site for the hour, I'll keep tracing.

Its getting complex and I don't get some of the stuff like ajax and all since I don't do web programming.

Downgoat

ok well basically the website has to communicate with the server which does the downlaoding somehow

if oyu can reproduce that you can fake its behavior

Ashwin Gupta

@Downgoat yup, I've gotten to that code. Thats my plan.

thanks, I think I'll focus on that route.

Downgoat

ok well the first problem is how this uses it's own search and all

Ashwin Gupta

05:01

btw, the original aproach was like this:

Downgoat

why not just find youtube API

Ashwin Gupta

document.getElementById("input").value = name+" " + artist;
	document.getElementById("button").click();
	document.getElementsByClassName("link_preview 1")[0].click();
	document.getElementsByClassName("link_download 1")[0].click();

@Downgoat youtube api won't let you download videos/audio at all. Against terms of service. Do you mean one of those third party ones?

Downgoat

you can stream the video and write the audio to a file

I'm not familiar with youtube API though

Ashwin Gupta

@Downgoat wouldn't this require my program to "watch" the entire video before it has the full audio file to use

Downgoat

Youtube allows you to buffer, meaning it'll send you the video regardless of playback

Ashwin Gupta

05:04

@Downgoat right, thats true. So do you think I should give up on the DOM approach and tracing the code from the website and write my own thing instead?

Downgoat

yeah

though there is probably some website using something that'll be easy to scrape

Web scraping

Web scraping (web harvesting or web data extraction) is a computer software technique of extracting information from websites. This is accomplished by either directly implementing the Hypertext Transfer Protocol (on which the Web is based), or embedding a web browser. Web scraping is closely related to web indexing, which indexes information on the web using a bot or web crawler and is a universal technique adopted by most search engines. In contrast, web scraping focuses more on the transformation of unstructured data on the web, typically in HTML format, into structured data that can be stored...

Ashwin Gupta

yeah thats true also.

@Downgoat christ. I didn't know this was a thing.

betseg

Call PETA! People are scraping webs!

Downgoat

;_; y dey do dis to spoders

mınxomaτ

@AshwinGupta I have an API for that: github.com/turbo/YTM

Downgoat

05:17

:O is that even legal

mınxomaτ

Example: labs.turbo.run/api/v1/youtube/stream?v=zXIsRohjd7w

betseg

TIL Randall's wife survived cancer

Qwerp-Derp

Hello

@Downgoat How do I install highlight.js

Downgoat

gitbooks has it already

Qwerp-Derp

Wot

So how do I do custom highlightings

Just normal JS?

But how am I meant to link it hten

@Downgoat?

Downgoat

05:31

just write a custom highlightjs language

see highlightjs docs

Qwerp-Derp

In a separate javascript file?

Downgoat

highlightjs.readthedocs.io/en/latest/language-guide.html

in gitbook plugin

Qwerp-Derp

in "languages" in book.json?

@Downgoat (sorry if I'm asking too many questions, I'm just stupid around this)

Downgoat

... CS textbook has list of common errors but doesn't include dreaded nullpointerexception

@Qwerp-Derp um lemme see im not sure >_> haven't done this in a whole

Qwerp-Derp

Just like

post a screenshot of where I'm meant to put it

@Downgoat Are you there?

Ashwin Gupta

05:43

@mınxomaτ Hey thanks! I'll check that out. I'm gonna try writing the program in a couple ways to learn different approaches.

Qwerp-Derp

Feq @Downgoat where are you

Ashwin Gupta

@Downgoat thanks for the advice btw. I think I've finally figured out how this guys code works.

Qwerp-Derp

@AshwinGupta Which code?

Just curious

Ashwin Gupta

@Qwerp-Derp mp3juices.cc

Qwerp-Derp

Ah

Ashwin Gupta

05:45

Basically its like this:
1) Enter data (song title)
2) Send data through weird black magic php/ajax stuff I don't get but can use anyway
3) Retrieve code that has an id code for the download
4) Take ID code and call checkVideo() function
5) retrieve an object with a server id and hash for the video link
6) use the formatting function to get a download link

Anyways. I'm tired. My brain is fried. I've got school tomorrow. Good night, happy coding to you all.

Qwerp-Derp

Ah

GN, @AshwinGupta!

mınxomaτ

Currently, YT has a vulnerability that is basically an "open secret". This way, a URL can be generated to fetch the raw video from Google's internal CDN before it reaches YT.

I know that some of the downloaders/leechers use that. Let's see how long this will work.

Anonymous

No phone call from Google today :(

Qwerp-Derp

:(

betseg

06:01

:(

DJMcMayhem

^ & ^^

Qwerp-Derp

@Downgoat Where are you???

betseg

@AshwinGupta im at school, good morning! :P

orlp

06:49

@PhiNotPi @Geobits still here?

I implemented my blur in C++

and now it's true purpose can be shown

betseg

Halp

I want to make a golfing language

I know how to

But i don't know what to

orlp

do you see this image?

of miniature houses?

betseg

Ye

orlp

well, those aren't miniature houses!

it's what my program does with it

betseg

i knew it i saw picture like that

mınxomaτ

07:32

@orlp That's called "Tilt Shift" filter. Not really a simple blur, more a process.

At least it's put under "Filters/Effects" in most graphics processing software, rather than blurs.

orlp

@mınxomaτ yes I know

I implemented it :)

Stewie Griffin

@Sherlock9, oooh, I got the Necromancer badge thanks to your efforts!

New Sandboxed Posts

07:47

0

A: Sandbox for Proposed Challenges

Keyed Sorting Given a list of indices and zero or more lists of integers, output the lists of integers, sorted in ascending order, with the key priority from the first input. Example Let the keys input be [1, 0, 2], and the lists input be [[5, 3, 4], [6, 2, 1], [5, 2, 1]]. Those lists need to ...

mınxomaτ

07:59

Interesting google link: redirector.googlevideo.com/report_mapping . As far as I can tell, it gives you the ID of the internet exchange for your IP slash.

TùxCräftîñg

08:50

monrngi

i love how heavily downvoted questions have a lot of answers on PPCG

betseg

I'd answer and downvote a too easy question.

Fatalize

09:35

@TùxCräftîñg Did you even read this meta post?. I come to chat and 2 of your 3 messages are removed.

12

and the third one isn't even meaningful

trichoplax

@TùxCräftîñg If a test isn't suitable for TNB, it can be posted in the sandbox. If it is suitable for TNB, it shouldn't be deleted as this causes confusion and frustration for other chatters.

@betseg if another chatter makes yours irrelevant by deleting their message, please don't delete yours in response, as this only makes the problem worse and may lead to you being seen as part of the problem too, as most people cannot read the content of deleted messages.

@Fatalize Thanks for highlighting the problem. If I had been in the room at the time, @TùxCräftîñg would have been kicked for that.

As it is, a 1 minute kick is meaningless when the user is not in the room, but I'm applying it anyway so that the next kick today will then be 5 minutes instead of 1. @TùxCräftîñg please take this as a friendly warning and avoid the need for anything more drastic.

5

Steven H.

So a class assignment just challenged me to golf something in Python

betseg

09:51

Plz halp (C) i have an int array like {8,3,0} halp me print 83rd ascii character

Steven H.

I need to golf a naive interpretation (476 bytes) into a one-liner < 80 bytes. All of the time I've spent here is preparation for this.

Sefa

@StevenH. A class assignment that don't require overly verbose code? I would have love to have them

trichoplax

@StevenH. How many classmates are you competing with...?

Steven H.

It's not an official competition, unfortunately. The professor simply included the bytecount of his solution in the problem parameters.

trichoplax

Ah OK. So the point is to make the implementation less naive, not necessarily to golf it?

Steven H.

09:57

That's the primary goal, seeing as this is neural nets and properly golfing something this complicated is doomed to be buggy.

Not to mention we're using numpy which is not usually known for its golfiness.

Destructible Watermelon

power is back!

Steven H.

?

mınxomaτ

? indeed

Destructible Watermelon

10:19

I think I might work on a turing completeness proof for Turtlèd

I think it only needs 3 types of grid symbols to be TC

TùxCräftîñg

to prove TC for turtled you can compile bf to turtled or implement a tag-system or the 2-state 3-symbol TM

or rule 110

Destructible Watermelon

A TERMITE ATE MY HAMMOCK (In a roguelike)

zyabin101

which roguelike? :3

Steven H.

10:35

All of the roguelikes.

Destructible Watermelon

@zyabin101 Alphaman

zyabin101

Okai :3

Destructible Watermelon

I'm being attacked my mr potato head

ded

fucking lotuses

I had so many berries, but the lotus made me trippy so I couldn't heal with them

;_;

betseg

11:27

Plz halp (C) i have an int array like {8,3,0} halp me print 83rd ascii character

TùxCräftîñg

char c = arr[0] * 10 + arr[1];

trichoplax

@betseg Closed as duplicate of

2 hours ago, by betseg

Plz halp (C) i have an int array like {8,3,0} halp me print 83rd ascii character

:P

More seriously, is this homework or does it need to be golfy too?

betseg

@TùxCräftîñg yup. true.

@trichoplax nope, a new lang's interpreter

trichoplax

Ah, real work. I see

betseg

@TùxCräftîñg what if it's {1,0,4}

ill need ASCII 104

TùxCräftîñg

11:31

char c = arr[0] * 100 + arr[1] * 10 + arr[2];

betseg

@TùxCräftîñg you say put an if(arr[2] == 0). i see

TùxCräftîñg

a array like {0,8,3} for 83 and {1,0,4} for 104 is better

cuz now char c = arr[0] * 100 + arr[1] * 10 + arr[2]; work for the two

betseg

But input won't work

Something like c80p and c104p and c110p

Wateva

c080p it is

Steven H.

(arr[0] * 10 + arr[1]) * (arr[2] ? 10 : 1) + arr[2]

I think that should work but I haven't played with C in a while

betseg

110 will be 11

ill just use 080 etc

Steven H.

11:46

You should pad it during interpretation/compiling though

so you don't have to write that part out

and you can use 80 instead

betseg

if(strlen(arr)==2)

Ye makes sense

Include the p in the array too

betseg

12:08

What functions should a golfing language have?

Fatalize

Depends on your language

Jonathan Allan

4K celebration ヽ( ͡⎚ ͜つ ͡⎚)ﾉ

Dennis

12:28

@DJMcMayhem status-elevened codegolf.stackexchange.com/tags/regular-expression/synonyms

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Interleave your code with the input Given an input string, interleave this string with the source code of your solution. For example, if your code is abcd and the input is 1234, then your program must output 1a2b3c4d. If your code is shorter than the input, then it must loop back to the beginn...

0

A: Sandbox for Proposed Challenges

Just add two numbers. code-golfarithmetic I am so embarassed we just don't have simple addition yet. Rules: Positive, zero or negative integers must be supported, if they can be. Standard Loopholes are forbidden. You can use a program or a function, but not a snippet. You can output as: A ...

Dennis

@Dennis I got a badge for that. o_O

Geobits

12:43

@orlp I happen to like this effect: codegolf.stackexchange.com/q/26317/14215

betseg

Can I post a non-competing Imagemagick answer to the question and make it CW?

Adnan

@betseg Why the CW?

betseg

Because it uses disallowed things?

Geobits

CW isn't an excuse for "breaks the rules" though.

betseg

k den

Anonymous

12:54

21

A: How should Community Wikis be used?

Community wiki is not a rep waiver I've mentioned that from time to time in the past. Community wiki doesn't just mean that you cannot earn rep from a post. Yes, it does have that side effect, but the community wiki option is for posts that can be edited by anyone without worrying about post ow...

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