The Nineteenth Byte

Christopher Peart

12:06 AM

Can this be reopened? It is a basic markdown parser codegolf.stackexchange.com/questions/108592/…

mınxomaτ

I'm 99.8% sure that's a dupe.

Of an equally closed question.

Christopher Peart

Never found a dupe

Also the original writer said he never posted it and gave me permission

Just looked up markdown parse and go no questions that matched

user165474

@ChristopherPeart For your modified Processing JS submission to the Windows Error Boxes to the next level, could you please make it so that it erases the previously drawn rectangle? Right now, I'm not considering it valid, but if you make that fix I'll consider it valid. Thanks!

mınxomaτ

I distinctly remember this. It was closed back then because it was unclear how to handle nested cases. I'm looking for it...

DJMcMayhem

I vote to close as unclear what you're asking because there are at least 500 unexplained corner cases. Markdown is an incredibly tricky language that everyone has some idea of what it 'should look like', but a formal specification is quite long. This is nowhere near a complete specification. — orlp Jan 30 at 7:52

mınxomaτ

12:11 AM

So the same reason.

Christopher Peart

I just mentioned that I would not have nested cases

Just edited

@AlexL. I did

user165474

@ChristopherPeart Oh, must've missed the update. I'll go look for it! :)

Christopher Peart

@AlexL. Updated my link

New Main Posts

0

Q: Super-Meta Quine

PPCG hasn't had enough of quines already... Challenge: Your task is to create a program "A0". When this program is run with no input, it outputs nothing. When this program is run with input, it outputs "A1". When "A1" is run with no input, it outputs "A0". When "A1" is run with input, it output...

user165474

@ChristopherPeart Okay, it works now! +1

mınxomaτ

12:16 AM

11

Q: It's a double+ header!

Related Exposition After winning the SO raffle, you could have been on top the world, and you were! The raffle had been going on for a year, now, and you were one of a hundred programmers who were selected to enter into the SO stronghold. And finally, the wait is over. Today is the day you go t...

code-golf string

This was the challenge I remembered. It was briefly closed an unclear, now it's open.

This is pretty much a comprehensive "parse this markdown" challenge.

> Given a valid markdown file as input to your submission, perform and output the following transformations on the input

user165474

I feel like going trigger happy with spamming questions today... hm...

DJMcMayhem

CMC: Given a string of length n, output a new string that is the first character repeated n times, the second character repeated n-1 times, etc up to the last character repeated once

"world" --> "wwwwwoooorrrlld"

mınxomaτ

Slowmotion speak simulator

user165474

s=input();print(''.join([s[k]*(len(s)-k) for k in range(len(s))])) Python program written in about 30 seconds

user165474

Got it on my 3rd try

user165474

12:23 AM

The first time I forgot a pair of brackets, so it was trying to subtract an int from a str

user165474

The second time I didn't use ''.join, so it gave me an array

Doorknob

@DJMcMayhem :s/./&\r/g<cr>ddqqk:0,norm ylp<cr>@qq@q:%s/\n<cr>

I'm sure it can be way shorter :)

DJMcMayhem

Well :%j! for starters

Helka Homba

Do we have a challenge about computing ancestral proportion for an individual? e.g. (Algeria,(Brazil,China)) represents a person's mom being Algerian and paternal grandparents being Brazilian and Chinese. The output would be 0.5 Algeria, 0.25 Brazil, 0.25 China

Doorknob

@DJMcMayhem Oh, duh. I always forget that join! exists (even in daily text editing, although I have started using gJ occasionally).

Christopher Peart

12:27 AM

@AlexL. Can the background be the first box?

user165474

@ChristopherPeart What do you mean by that exactly?

DJMcMayhem

@Doorknob also, if you swap & and \r you don't need dd

Christopher Peart

@AlexL. is khanacademy.org/computer-programming/new-program/… valid

DJMcMayhem

While we're on the topic, what exactly does 0, do? Does it implicitly assume you mean 0,.?

LegionMammal978

Video game idea: You're given a randomized scenario and have to correctly fill out the (U.S.) tax forms for that scenario

user165474

12:30 AM

@ChristopherPeart I'm going to say no, because there's supposed to be a window with a button in it, and this is already borderline invalid because there's no window, but the link you just gave me, I'll say no because there's only one rectangle.

LegionMammal978

If you do it wrong, the IRS gets angry at you

user165474

lambda k:''.join([k[-i]*i for i in range(len(k),0,-1)]) slightly improved version

Doorknob

@DJMcMayhem Yep.

user165474

@DJMcMayhem

DJMcMayhem

@Doorknob okay cool. BTW, I golfed 7 bytes off: Try it online!

Doorknob

12:35 AM

Oh, doing the gJ inside the macro is a nice touch

quartata

security.googleblog.com/2017/02/…

!!!

Probably late to the part aren't I

Yeah I am

Helka Homba

starboard

quartata

Noticed.

mınxomaτ

@quartata cloudbleed.* domains are all gone already

quartata

@mınxomaτ Oh this was about the SHA-1 collision

mınxomaτ

12:40 AM

Oh woops

quartata

The CloudFlare thing was scary too though

mınxomaτ

Not scary, much worse. Much, much worse than heartbleed.

CF approved my rant comment

DJMcMayhem

@Doorknob V translation: Try it online!

muddyfish

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

This can go in the sandbox while I figure out if it's a dupe and debate whether to generalize it to any tree. What's your ancestry? Suppose someone is is trying to determine their national ancestry by outlining their family tree. For example, if they knew their mother was from Algeria, their...

quartata

12:47 AM

@mınxomaτ You forgot to sign it Summer Glau

2

mınxomaτ

Heh

DJMcMayhem

Best file browser for Android?

mınxomaτ

> I uncovered a CloudFlare data leak and all I got was this t-shirt. No, seriously.

quartata

@DJMcMayhem I use ES File Explorer

but I'm sure there's better ones

@mınxomaτ :(

Valve did the same thing with that guy who found the security hole in Steamworks IIRC

Luis Mendo

@DJMcMayhem I used to like (old versions of) File ES. Now it's filled with bloatware. I'm using Asus' one now, it's lighter

mınxomaτ

1:08 AM

CloudBleed cache leaks are starting to appear: news.ycombinator.com/item?id=13719455

Worth a read:

274

Q: How would git handle a SHA-1 collision on a blob?

This probably never happened in the real-world yet, and may never happen, but let's consider this: say you have a git repository, make a commit, and get very very unlucky: one of the blobs end up having the same SHA-1 as another that is already in your repository. Question is, how would git handl...

git hash-collision

ATaco

1:27 AM

I bought a laptop, Came with Windows-10 Pre-installed, which on its own is fine, I actually like it. The issue was it was filled with bloatware. Fresh Install Time

Riker

solution

don't use windows

no more bloatware for you

Nathan Merrill

@ATaco Decrapifier

mınxomaτ

@NathanMerrill Yeah, solve bloatware with even more software...

Fresh install all the way. Only use MS links to pull the image, never rely on any third-party media.

Jan Dvorak

false. I've got plenty of bloatware on my Linux cellphone. I mean, Android cellphone.

mınxomaτ

You can generate direct MS download links for install media using tb.rg-adguard.net

Nathan Merrill

1:33 AM

@mınxomaτ that's like saying to not buy a broom to clean up messes

mınxomaτ

I disagree.

ATaco

Alternatively I could just buy a new floor.

Nathan Merrill

right. That's the equivalent of reinstalling OS :)

ATaco

Well Laptops usually don't give you a copy of your OS.

ETHproductions

Cleaning up bloatware might be better compared to getting stains off of your floor

mınxomaτ

1:36 AM

Bloatware is not really dust as much as radioactive waste. I rather move into a new house that I know is clean than try to deal with it using any band-aid solutions that might not remove every last bit.

ATaco

By the SteamMop3000™ Kill Stains dead

Nathan Merrill

@mınxomaτ I guess that really depends on how much you care about bloatware. I would much rather deal with bloatware than live with radioactive waste :)

but you know, to each his own :)

ETHproductions

Alright, so it varies between stains and radioactive waste depending on the user

ATaco

Well generally I can clean a computer of Bloatware on my own.

But if they install something to the core files.

They have made a sad taco.

Pavel

@ATaco By installing Linux on it?

ATaco

1:39 AM

By purging the Bloatware.

I'm still not running Linux on anything.

New Main Posts

-5

Q: def block_test puts "We're in the method!" yield puts "Yielding to the block..."

def block_test puts "We're in the method!" yield puts "Yielding to the block..." yield puts "We're back in the method!" end block_test { puts ">>> We're in the block!" }

ruby

ETHproductions

That's a new one.... completely off topic, with a self-answer that contains exactly the same text

Jan Dvorak

troll, or really clueless?

ATaco

I actually have no idea.

ETHproductions

Probably something along the lines of "I haz problem I'll post it on site that sez 'code'"

Nathan Merrill

1:46 AM

clearly somebody is experimenting with the SE API

Wheat Wizard

I'd wager its a bot

ETHproductions

What's with the text though?

ATaco

It's not even valid Ruby

Thomas Ward

o/

Nathan Merrill

its probably ruby that got escaped incorrectly

Wheat Wizard

1:48 AM

github.com/nanotechz9l/Codecademy/blob/master/ruby/…

Looks like it was copied from there

Nathan Merrill

huh

must have been a manual copy

ATaco

Well then.

Nathan Merrill

because it skipped comments

as well as the invalid syntax later on

but nice find

ATaco

.code.tio:3: syntax error, unexpected tSTRING_BEG, expecting ';' or '\n'
def block_test puts "We're in the method!" yield p...
                     ^
.code.tio:3: syntax error, unexpected keyword_yield, expecting end-of-input
...ts "We're in the method!" yield puts "Yielding to the block....

It errors because it's all been placed on one line like that.

Wheat Wizard

If you look at the markdown for the question all the newlines are there

tio.run/nexus/ruby

It looks like it is valid ruby, but it gets mangled by the markdown

ATaco

1:58 AM

I fixed the Markdown on the (Deleted) post

Dennis

Why on Earth would you do that?

ATaco

Broken codeblocks on any post, no-matter how low quality, deserve to be fixed.

Wheat Wizard

The answer still has the same broken code though

ATaco

The code does infact work.

Dennis

That clashes with our general don't polish turds philosophy. It doesn't matter for a deleted post, but visible ones may get bumped to the front page by edits, which is not at all desirable.

6

Jan Dvorak

2:01 AM

Don't polish junk

Helka Homba

CMC: Given a pos int, how many digits are increasing from left to right? e.g. 6237 -> 2

Pavel

How is that 2?

DJMcMayhem

@HelkaHomba d0>s

Jan Dvorak

I don't think I even qualify... ->i{s=i.to_s;s.length.downto(0).find({|l|s.each_cons(l).any?{|s|s.sort==s.rever‌se}}}

New Main Posts

0

Q: Tell me about my question!

I'm a narcissist. (Not Really) I'm also very lazy... (Not Really) So I want to know how many people like this question, and how many people have seen it (I don't care about people who downvote it) But I'm too lazy to check myself Challenge Your challenge is to output how many people like ...

code-golf stack-exchange-api

DJMcMayhem

2:19 AM

5 bytes in jelly: Try it online!

Not sure if MATL is better for the task or I'm really bad at jelly

Probably both

New Main Posts

-2

Q: Find the unnecessary return keyword and remove it

def first_n_primes(n) return "n must be greater than 0." if n <= 0 return "n must be an integer." unless n.is_a? Integer prime_array ||= [] prime ||= Prime.new for num in (1..n) prime_array.push(prime.next) end return prime_array end first_n_primes(10)

ruby

user165474

@NewMainPosts I'm not even sure what this is about...

Jan Dvorak

this really smells of trolling

user165474

@JanDvorak Agreed. Seems potentially like someone trying to collect upvotes? Not sure.

DJMcMayhem

If that's their goal, they're really bad at it haha

user165474

2:33 AM

@DJMcMayhem Agreed :P

user165474

BTW, is there a way to easily reply to the last message using shortcuts?

ATaco

@NewMainPosts Another post by this guy? Mods..?

user165474

@ATaco Not the first nonsense post by this guy?

Jan Dvorak

Nope. They've posted this already.

Dennis

@HyperNeutrino Sure, just press Shift + Tab, Menu, Up, Up, Up, Enter, Tab, Ctrl + V, Space, Ctrl + Left, Shift + Home, Shift + semicolon, and End.

Works only in Chrome and if there are no links in the message though. Alternatively, use this userscript.

user165474

2:42 AM

@Dennis Unfortunately, I don't usually use Chrome, but I'll try it, that seems interesting! Also, what do you mean by the Menu button? I have a button between right-Alt and right-Ctrl that looks like a hamburger icon in a box. Is that the right one?

Dennis

That's the one. I really recommend the user script though.

user165474

@Dennis Testing

user165474

@Dennis Yay, it works. (Using Firefox; I just need to use another Up).

a contracted slim noun

Aw, I started up Firefox for nothing.

user165474

Also, in my version of chrome at least, it's only two Ups.

Jan Dvorak

2:45 AM

Nah, keep it open and close Chrome

Dennis

Right, the third one was an extension.

@JanDvorak Not in a million years.

Jan Dvorak

Maybe. Maybe it will be when the next version comes out.

Dennis

Of Firefox?

Jan Dvorak

of Chrome

user165474

Poll: Firefox vs Chrome

Dennis

2:47 AM

If I don't like it, I just keep the one I'm using right now.

Jan Dvorak

You can't not upgrade Chrome

Dennis

Sure I can.

Riker

10

Q: Golfscript Diagonal Array

Is there a way in Golfscript to bring all of the diagonals of an array into a single array? For example, for the array [[1 2 3][4 5 6][7 8 9]] return [[7][4 8][1 5 9][2 6][3]] (not necessarily in that order) and for ["ABCD""EFGH""IJKL"] return ["I""EJ""AFK""BGL""CH""D"] (not necessar...