The Nineteenth Byte

5:04 PM

@Optimizer This isn't going to bubble up to the page in the form of a status code or unhandled exception. I'm just going to do nothing. If the user bypasses client side validation and presses the save button, nothing happens.

Optimizer

is it a webpage or not?

Rainbolt

Web Forms

(so yea kinda)

Optimizer

then it has to have a response code, right?

Rainbolt

It'll be 200

Optimizer

ok

so no Rest?

Rainbolt

5:05 PM

Can you be more specific?

Rest means a lot of things to different people

Optimizer

nvm

Rainbolt

Our database has a rest interface, but it isn't woven into the website. It's a separate product with a separate installer

Nathan Merrill

@Rainbolt the problem with this is that you require that client side to match server side

aka, say your database has a maximum of 100 chars for something, but your javascript doesn't limit it

if the problems don't bubble up, then the user doesn't know

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@Zgarb I think this works: }:;(<@|. ;. 1) 0 , a

I'm learning the language, not yet golfing.

Zgarb

@CᴏɴᴏʀO'Bʀɪᴇɴ Looks good! Now, can you make it a tacit verb?

Cᴏɴᴏʀ O'Bʀɪᴇɴ

5:19 PM

Yay! I'll work on that now

Rainbolt

@NathanMerrill That's a good point. I just hate to do everything twice

i.e. Check if it is valid on the client, if not, do this. Check if it is valid on the server. If not, do this.

Nathan Merrill

as do I, but its the life of web development

in fact, with some frameworks, you have to do the checks more than twice

Cᴏɴᴏʀ O'Bʀɪᴇɴ

prepend =: 0&,
boxify =: <@|. ;. 1
flatten =: ;
slice =: }:

full =: slice @ flatten @ boxify @ prepend

Nathan Merrill

e.g., we have a framework, where the models that represent the database entities have a check, but if you wanted errors to appear on the form, you needed additional validation on the form (in php)

Cᴏɴᴏʀ O'Bʀɪᴇɴ

This works, but why doesn't }: @ ; @ (<@|. ;. 1) @ 0&,?

New Main Posts

5:23 PM

0

Q: Compute the histogram entropy estimation of a string

Write a program or function that estimates the Shannon entropy of a given string. If a string has n distinct characters, xi is the i th distinct character, and P(xi) is the probability of that character occuring in the string, then our Shannon entropy estimate for that string is given by: For...

wizzwizz4

I have 800 reputation! :-)

Cᴏɴᴏʀ O'Bʀɪᴇɴ

\o/

Zgarb

@CᴏɴᴏʀO'Bʀɪᴇɴ Adverbs are left-associative, so that's parsed as (<some verb> @ 0)&,

Cᴏɴᴏʀ O'Bʀɪᴇɴ

oh, I see.

Zgarb

Put parens around 0&, and it should work.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

5:25 PM

}: @ ; @ (<@|. ;. 1) @ (0&,) :D

Rainbolt

@NathanMerrill I'm doing something similar, except my models are written in the same language that my server side validation occurs in, so I stuff the form into the exact same model and call Validate again.

So I'm never really validating the form on the server

4

@CᴏɴᴏʀO'Bʀɪᴇɴ \o/

@trichoplax Cool. :D

I'm thinking of making a graphical-output golf

zyabin101

5:30 PM

FGITW'd! \o/

trichoplax

Any feedback on the thickness of the threads or the thickness of the outlines?

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@Zgarb thanks for the problem, I learned more :D

trichoplax

@El'endiaStarman Thanks :)

El'endia Starman

@trichoplax Looks pretty good to me. Almost perfect in that aspect.

trichoplax

@El'endiaStarman That's handy - because it's neat powers of 2 at present (apart from the sqrt(3), but that's unavoidable...)

El'endia Starman

5:32 PM

haha, nice

orlp

5:46 PM

2

Q: Compute the histogram entropy estimation of a string

Write a program or function that estimates the Shannon entropy of a given string. If a string has n distinct characters, xi is the i th distinct character, and P(xi) is the probability of that character occuring in the string, then our Shannon entropy estimate for that string is given by: For...

code-golf string probability-theory

27 minutes and still no answer?

Cᴏɴᴏʀ O'Bʀɪᴇɴ

I saw math and was like "I'll do it later"

orlp

it's super easy :P

Opposed to my usual challenges, this one looks complicated, but is actually quite simple :) — orlp 18 mins ago

wizzwizz4

@orlp I once went an hour without an answer.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

wizzwizz4

I once went almost a day without an answer.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

5:47 PM

@wizzwizz4 I've gone for about a month without answers >_<

orlp

@CᴏɴᴏʀO'Bʀɪᴇɴ it looks complicated, but it really isnt

Cᴏɴᴏʀ O'Bʀɪᴇɴ

Ik

It's a lot to digest

orlp

-n * sum(P(i)*math.log(P(i), 2) for i in range(n))

wizzwizz4

I've gone for w̃̆͊̊ͣ̓̒̿̒͐͊͒͛ͨ͑҉҉̜̼̙̜̳̜̬̺̮ǒ̟̪̮̮̠̳̗͔̲̲̘̻ͭͤ͑ͭ́̽͛͢͜͠w̷̛̮̭̳͓̯͉͍͆̍͗͗͊͌͂̆̐̅̈̋̃̇̏̑̕͟͟ỹ̶̧̡͓̭̗̬͉̣͙̲͉͉̻̖̙̦͖͐ͭ̃̌́̓̿ͩ͘͞o̸͎̰̥̗̠̟̹̫̘̦̥̩̰̱̳͎͙̼̹͑̀ͪ̅̀̎̓̀̀ư̢̭͙̼̪͚̻͚̳̺̼͈̲̄̎ͤ̓̔̽̅͛̀ͧ͑ͦ͊ͪ͞c̨̫̺̗ͭͩ̃͒͋͆̇̄ͤ̉̑̇̄̓́̚͘͡a̧͎̯̫̮̯̖̬͕͙̫̩͉͔͎̞̘̘̐̈́͊ͫ͋ͨͩͨ̒ͯ̀͒̈́̽ͭͮ̄̀͝n̍̏̑̐̈́̓̄̿͛̃͊̋ͮ͜͞͏͏̧̦͚̮̲̝̙̱͎̻̹̱̩̗̻̩̫ͅͅa̸̭̤̟̭̤̽̏̏̄̿͂ͧ̂͝c̸̸̨̫͍͖̤̦͖̿̇͑̿̾ͤ͐̐͒́̄͐̈́͟ț̴̟̭̭͙̱̠̘̫̉ͯͨͯ͛͂̎͋ͥ̌̑̍̇̓͛́̀͟͟ǘ̵̸͎̻̣̙̪͔̙͓̈́͛̿ͫ̓ͪ͛̊ͩ̾͋ͯ͐ͮ̈́̚͠a̸̳̮̙͉͉̲̱̪̼̻̥̹̭̣̲͈̠ͮ̽̅͋̀̂̀͞l̴̛̳̳̭͔̯̖̪̖͓͚ͣ̑̄̂̆̆̐͡l̷̥̲̥͖̟͍̲̲̖͉̟̟̝̩͕͉̫͕̤ͥ͐͊͒͌͒ͩ̆͂͊́̚͜yͪ̇̓͋̎̍̆͌͗̐̇̏͗͐̄̂̚͠҉̵̗̼͓̠̺̪͔̰̖r̶̴̭͖̙͉͙̾̆̂ͮ̿̿̃͐͒̿̾́͟e̶̝͚͙̻͈̦̲̖̳̪͍̘̻̺͚͎͒̓ͬͬͩͨͫͩ̀ͦͧ̏̑̅̓̀͜ǎͬ́̾̆͛ͫ̓͏̝̞͓͖̝͚̻̬͈̼͓̗̳͜͠d̶̢͉͍͕͚͚̏ͫ̓̇ͯͩ͛ͤ̒̈́́̚̕͟ͅ…

Cᴏɴᴏʀ O'Bʀɪᴇɴ

dafuq

flags

orlp

5:51 PM

@wizzwizz4 I have an old challenge that still has 0 answers

8

Q: Find the follow sets

The challenge below requires you to be familiar with formal parser theory. If you don't know what the question is asking because you don't know what the terms mean, context-free grammars and first/follow sets are covered in a lot of university courses. I can recommend this Stanford course, in pa...

code-golf grammars

wizzwizz4

o̶̲̝͎̩͉̖͓̪̞̥͕͑̑ͣ̃̿̈́̒̈́ͮ̌̄͆ͤͬͦͫ̑̏̀̚͜͝h̡̡̙͈̺͙̲̭̭̼̝̲͈̙̬̬̪̩̥̖̋̿͐̓̾ͥͯ͒ͦ̆̅̓ ̶̙͚̭͓̞̪͎̱͈̐ͫͦ̀̉̇͆̀ͨͤ́̚dͧͣ̃҉̧̭̩̰̫̮͖̜̦̝͢͞ͅe̡ͫ̅̉ͮͮͨͩͭ̀̅̈ͨ̾͊͐ͦͩͮ͜҉̯̳̗̟̤̭̺͉̘̙͙̻̰͉ą̷͚̟̗̻̖̓̊ͧ̈́̍͋̈́̎͛̾̍̐̎͞r̵̵̙̻͈̫͚̞̭̹̝͈̞̠̗̜̙͍̠͎̿͌͐͒́̃ͥ́ͬ͛͂̾̂̚̚͜͠ͅ ̴̘̝̹̭̞̓̈̔́͊͗́͝͡t͌ͭͮ͑͗̈́͏҉̠̬̲ͅh̵̨̛̝̤͇̖̝̱͉̝̉ͬ̌̿͐͛̀͊̍́́̚͢ẻ̶̢̗̝̼͎̯̞̥̬͖̫̥̞̦͇̳̲̆̎͌ͧ̌ͧ̍̾̍̑
̶͉̳͈̮̦̱̙̩͔ͥ̆͑͗͡͡s̵̴̬̪̬̻̻̮̘̤̤̰̭̣̖͙̮̖̙̺̣̄̀̓͋̈͊̋̑̋ͤ̄͐̀͞͞t̷̝͈̺͓̖̼͉̗̯̥̤̭͉̹̤̼̥̎͌͊̂̈́̓͗͂̑̔̑͟a̶̴̸̶̸̬͇̺̦̮͔̒ͪ̎̽̅̈́ͩ̿̿̈́͐̅̽̅̚̚r̡̤͔͔̠̜ͮ̊̎͆ͫ̓͡b̶͋̊̅͌͛͡͏̸͈͇̻͍̙̖̙̘̰̮̺͞o̫͙̱̳̻͔̬͗͛ͩͪ̎̐̑͂͊̔͋̽͜͡͠ä̡͓̫̫̺̭̟̠͚͙͔̺́ͨ̐ͬͦ͒̊̊̒̋̋͠͠͠͡ȑ͙̖̬͈̰͍̦͉̤̘̮̙̭̥͍̼̐̂̓̅ͪͪͬ͗͆ͪ̒̔̔͜ͅd̵̷̨̯͙̮̫̝̙͚͔͙̤̫̩͇̱̣̲̘̩͊̆ͯͮ͋̆̔̑̕ ̴̢̤̪͙̹̙̲͎̘̰̬̀͌̍̉̿ͣ̍͒͛͗̌̏ͤ̍͐͢î̩̜̙̥͎͓̳̑̆́͘͡…

El'endia Starman

Sandbox

Where you can play with chat features (except flagging) and ch...

4

Cᴏɴᴏʀ O'Bʀɪᴇɴ

^

wizzwizz4

They are messages for real people. Select + Read.

Anyway, they're trapped in their bounding boxes.

TimmyD

@orlp I recognize some of those words.

El'endia Starman

5:56 PM

@wizzwizz4 They are visual noise.

wizzwizz4

Ah. Ok.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@Zgarb How would I arrange an expression of the form (u x) f (v (w x)) tacitly? It looks like a fork, but the right side throws it off

New Main Posts

3

Q: Reverse positive runs

Input Your input is a list of single-digit numbers in any reasonable format, including a string of digits. The input will not be empty. Output Your output shall be the input list, but with each maximal run of nonzero digits being reversed. Example Consider the input 95883007414830 <---> <----

code-golf array-manipulation

Zgarb

@CᴏɴᴏʀO'Bʀɪᴇɴ u f v@w?

quartata

dammit i went to go eat lunch and now I can't type my Jelly solution on mobile

Cᴏɴᴏʀ O'Bʀɪᴇɴ

6:03 PM

@Zgarb Oops, it's actually (u x) f (v (u x))

Adnan

@quartata Copy paste this ṣ0Uj0

quartata

Meh, too late. There's already a 5 byte solution in another language. Might as well post it with an explanation when I get back

Cᴏɴᴏʀ O'Bʀɪᴇɴ

but what if you get ninja'd

quartata

then who cares

Zgarb

@CᴏɴᴏʀO'Bʀɪᴇɴ Okay, then it can be u f v@u or (f v)@u, depending on which is shorter.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

6:06 PM

shrugs

@Zgarb Oo, cool! Thanks!

zyabin101

@Doorknob how do you read a Babble program out loud?

Zgarb

@orlp Is the sum multiplied by n, or the length of the input string? Your test cases suggest the latter option.

Optimizer

@zyabin101 put 10 bubble gums in your mouth, chew for 10 minutes and read an equivalent perl program.

orlp

@Zgarb oopsie, it should be the length of the string

@Zgarb should be fixed now

Geobits

@Optimizer loudly

Optimizer

6:18 PM

thank!

maybe @Doorknob, being a mod, can edit that in.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

mod-abuse eleventeen plz

Optimizer

^

El'endia Starman

@EasterlyIrk I am not the only oracle for the almighty NMP though.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

oops

Zgarb

@CᴏɴᴏʀO'Bʀɪᴇɴ BTW, your J answer can be golfed to 18 bytes.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

6:29 PM

oh? let me look at it

o_o I don't see how

does it use a chain or something?

Zgarb

You can get rid of the &

Cᴏɴᴏʀ O'Bʀɪᴇɴ

why?

Zgarb

v@(m&u) is equivalent to m v@u ]

if u and v are verbs and m is a noun

Cᴏɴᴏʀ O'Bʀɪᴇɴ

Cool, thanks!

Cᴏɴᴏʀ O'Bʀɪᴇɴ

6:54 PM

Anyone who knows String Theory (as in, strings of characters) can instantly impress those who know of the other String Theory :P

El'endia Starman

@CᴏɴᴏʀO'Bʀɪᴇɴ Until they figure out what you're talking about. :P

If you think this is too hard on literary criticism, read the Wikipedia article on deconstruction.

RenderSettings

I think the regex one is more apt

zyabin101

@El'endiaStarman And as we all know, more nerdy people figure out what you're talking about quicker.

\o/ @RenderSettings you're back!

RenderSettings

\o/ i am. been back on and off again for a while.

El'endia Starman

@zyabin101 If you did any 3D modeling, you'd see them a lot more often. :P

zyabin101

6:57 PM

@El'endiaStarman I use POV-Ray. My render settings are locked in as templates on the drop down list.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@El'endiaStarman :P there's always that.

That's some intense lag

@orlp your third answer has arrived :P

Agawa001

7:19 PM

@trichoplax can i ask u wut is dat ting which looks as an arabesque ?

orlp

Deconstruction

Deconstruction is a critical outlook concerned with the relationship between text and meaning. Jacques Derrida's 1967 work Of Grammatology introduced the majority of ideas influential within deconstruction. According to Derrida and taking inspiration from the work of Ferdinand de Saussure, language as a system of signs and words only has meaning because of the contrast between these signs. As Rorty contends "words have meaning only because of contrast-effects with other words...no word can acquire meaning in the way in which philosophers from Aristotle to Bertrand Russell have hoped it might—by...

@El'endiaStarman ^

Zach Gates

7:31 PM

Time to solve the case of the Zodiac Killer

RenderSettings

Ted Cruz is the Zodiac Killer.

Zach Gates

Solved

VTCAKAVSMoACE

That moment you find a PPCG question edited by Jeff Atwood.

5

mınxomaτ

TIL Giving a talk while an interpreter is translating is really weird.

muddyfish

@VTCAKAVSMoACE shock

orlp

7:37 PM

@Zgarb why did you make it single digits only :(

rip my answer

quartata

Our company is agile and lean with a focus on the long tail. Ok, our company is actually a polecat I found in my backyard.

hitting the random button leads to strange things

Zgarb

@orlp Shouldn't it be easier with single digits?

flawr

Which five posts should I downvote? I'd like to hit 12k exactly.

Zgarb

Oh you mean your earlier solution is not competitive...

Sp3000

7:54 PM

@orlp f=lambda l,*r:l and[f(l[1:],l[0],*r),r+(0,)+f(l[1:])][l[0]==0]or r (possibly better with 3.5)

orlp

@Zgarb yes, too easy :(

TimmyD

@flawr You could further bury the bottom of the barrel -- codegolf.stackexchange.com/questions?page=107&sort=votes

flawr

@QPaysTaxes I feel a lot younger now=)

@QPaysTaxes There is a web interface?

Zach Gates

@TimmyD Would have to be answers, not questions

El'endia Starman

@TimmyD Those are all questions though - flawr wants to lose rep.

feersum

8:05 PM

Downvote this... then my other answer can become higher scored than it.

TimmyD

Ah, misunderstood his request.

flawr

Next milestone will be 12345 rep

TimmyD

Not 12321?

zyabin101

@TimmyD "Ah, and 12,321 too. =)"

flawr

@QPaysTaxes The new UI really does change that a lot. Last time I tried my luck with git (and failed miserably one more time) you were not able yet to upload files. Perhaps I'm not gonna delete my account.

TimmyD

8:16 PM

Hmm ... have we had a challenge related to that? Given an input number n, what's the next "interesting" number bigger than n, where interesting is defined as palindrome, strictly incrementally increasing, contains three of the same digits in a row, etc.

flawr

@TimmyD You know the proof why all numbers are interesting?

@zyabin101 You probably mean 12'321. :D

TimmyD

Contradiction. Suppose there is a collection of numbers X that is not interesting. Then, by definition, there is the smallest non-interesting number, and it is therefore interesting and not in X.

flawr

high five=)

TimmyD

There is, of course, varying degrees of "interesting."

flawr

12321 = 111^2

El'endia Starman

8:19 PM

Those who use ' as a digit group separator should be burnt at the stake.

zyabin101

@flawr high five

El'endia Starman

(I'm mostly kidding.)

flawr

@El'endiaStarman Some people apparently use a comma/decimal point as separator=)

quartata

Dear Reader: Enclosed is a check for ninety-eight cents. Using your work, I have proven that this equals the amount you requested.

2

Agawa001

which means ? powers of 11 are palindomes ?

quartata

8:20 PM

alt text is the best part

zyabin101

@Agawa001 11 ^ 5 = 161051

flawr

@QPaysTaxes Well thank you anway for making me learn about the UI, that is really valuable. I do not like command lines.

And command lines do not like me.

@El'endiaStarman The nice thing about ' is that there are fewer people who confuse it with a decimal point. But some people use , and others . for the decimal point which can leads to confusion.

In the last few years at uni I'm trying hard to keep my notation as foolproof as possible in order to account for people from any origin=)

@QPaysTaxes Nah=) Sometimes intentionally provocated confusion is necessary for the entertainment.

@QPaysTaxes yay

quartata

The Makefile for this thing is going to be fugly.

Then again, all makefiles are fugly since they use tabs

Maltysen

@quartata ಠ_ಠ

TimmyD

Spaces ftw

Easterly Irk

8:31 PM

@CᴏɴᴏʀO'Bʀɪᴇɴ did you see how the tips for jolf hit HNQ?

@quartata poor person... :P

mınxomaτ

How did I live without this: omive.com

R. Kap

Hello everybody

Anybody know who this is?:

quartata

That's Rick Astley

R. Kap

Yup

TimmyD

Phew ... 8 edits, +9/-9 votes, 39 comments, 43 answers (6 of them deleted), a successful closure vote, and a successful reopen vote ... busy question.

R. Kap

8:39 PM

I can't believe it...

This is him when he was younger:

Age really gets to you

He really is never gonna give (us) up, never gonna let (us) down

Maltysen

Cute Little Puppy Doing Cute things

►

Easterly Irk

Depressing screenshot of the day:

>.<

n in the search bar gives here (TNB) and the most posted link in here.....

R. Kap

Rick Astley - Keep Singing

►

That is actually a good song

Maltysen

@R.Kap what does this have anything to do with that video of a cute puppy I posted earlier? ;P

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@EasterlyIrk wat

TimmyD

8:49 PM

Holy dang ... this guy married Gödel's Incompleteness Theorem with demonology and the "True Name" belief. Incredible answer.

150

A: You can control a Demon by knowing its True Name, but why?

Use of their name forces them to be aware of the one truth they can never know. Tl/Dr: If demons seek permanent power but trust no one, they put themselves in a strange position where mathematical truisms paint them into a corner which leaves their soul small and frail holding all the strings. ...