The Nineteenth Byte

Kritixi Lithos

6:25 AM

I lost 40 rep yesterday because a user was removed

MD XF

@KritixiLithos Almost everyone lost some

There was some serial voting stuff going around

Kritixi Lithos

oh I remember now

MD XF

I, however, gained 28 rep :P

@NewMainPosts if only it was code-bowling *sigh*

ASCII-only

@MDXF ... Did you even try golfing it

MD XF

'course I did

It's pretty golfed :P

ASCII-only

6:33 AM

@MDXF Then why do you have a full dictionary

MD XF

I mean, I'm golfing it more, but still

ASCII-only

Complete dictionary = not golfed at all

MD XF

It's more/less the only way to do that sort of thing in C...

ASCII-only

@MDXF Uh no?

Almost everyone uses a simple hash

MD XF

tfw you realize you named a variable buf in a code-golf solution :tableflip:

@ASCII-only really? link?

ASCII-only

6:37 AM

3

A: Tweetable hash function challenge

Python, 6390 6376 6359 H=lambda s:reduce(lambda a,x:a*178+ord(x),s,0)%(2**24-48) May be considered a trivial modification to Martin Büttner's answer.

New Meta Posts

0

Q: Opposite of code golf

Is there a version of code golf that requires the most convoluted solution instead of the tersest? I think it might be humorous (and informative) to see answers that exemplify the worst of some languages and architectures. Rules: largest code base wins scoring is the same as golf (byte count,...

discussion

ASCII-only

Not exactly the same thing but just use the right size and index into an array

@MDXF btw at least steal the first char of input, reduces length by like 100

MD XF

@ASCII-only What do you mean?

Kritixi Lithos

@fergusq Building the newest commit gives a build error

ASCII-only

int main(){gets(b);puts(m[0].b);for(i=1;m[i].a;i++)if(!strncmp(m[i].a,b,strlen(b)-1))puts(m[i].b);}

Then remove the first char from both keys and values

MD XF

6:48 AM

Whoa, thanks

Definitely gonna try that

ASCII-only

@MDXF Also only compare the 2nd to 6th chars

MD XF

Wait, why puts(m[0].b); at the start?

ASCII-only

@MDXF Because the first letter of state and abbreviation are guaranteed to be the same

MD XF

@ASCII-only No, I understand, but wouldn't it be putchar(b[0]);?

ASCII-only

@MDXF oh whoops

@MDXF sorry wasn't thinking

MD XF

6:52 AM

or printf(&b[0]); using C hacks

np

ASCII-only

@MDXF doesn't &b work

also if it helps you can restrict to 2nd-7th letters

Mendeleev

I'm back!

@Phoenix @Downgoat I was suspended for 30 days, not 7

@Phoenix I've been here the whole month

@Downgoat What did zyabin do?

@Dennis Please thaw this room:

Open PPCG Minecraft Server

Rules & Info: goo.gl/GfE3C8 Relay: goo.gl/9NQvFo Status: goo.g...

Thanks

MD XF

7:08 AM

@ASCII-only thanks a bunch :D

ASCII-only

Mego: Already posted python answer

Me: Still downloading PyPy

Anonymous

:)

ASCII-only

7:27 AM

;_; I really need PyPy to be able to find a valid solution

Anonymous

You sure? I did it with CPython just fine

ASCII-only

I'm doing it differently

New Main Posts

0

Q: Unsigned Int Greater Than Comparison Using Only Bit-wise Operators

Write a C function with the header: unsigned int greater_than(unsigned int a, unsigned int b); Assumptions: Each 4 bits of the int is from 0x0 to 0x3. Example: input: a: 0x01230123 b: 0x32103210 output: 0x00110011 Conditions: Use only regular arithmetic and/or only bit-wise operators.

code-challenge c bitwise

Anonymous

Code golf: the one place where making your own hash function is actually beneficial

Anonymous

It's always fun when you write a solution that's half the length of the current solutions

MD XF

7:33 AM

@Mego well yours isn't anymore :P

Anonymous

It was when I submitted it, so that's what counts for me :P

Anonymous

Also my Actually solution is nearly half the C solution's current size, so my statement still stands

MD XF

357*2 != 660

Anonymous

> nearly half

MD XF

:P

Okx

7:36 AM

But what counts as 'nearly'?

MD XF

Apparently, >50 bytes over

Anonymous

Now it's 232, so well under half

Anonymous

Happy now?

MD XF

-_-

Nice golf, though

+1

Anonymous

I don't know why I didn't think of doing that in the first place

Okx

7:40 AM

Would this count as a valid solution to this challenge? Not really sure, so posting it in chat first

MD XF

Does it do anything?

Okx

It's a function which returns basically nothing

But printed as a string, it is (null)

MD XF

OH WOW

You could blow every other C solution out of the water

But it's not f that's doing the printing...

without the main implementation it would print nothing

ASCII-only

idk if this works

Okx

Returning is a perfectly fine way to output.

Anonymous

7:43 AM

Now for my next trick: another 51 bytes off

MD XF

Darn you, mego...

Okx

So, you think it's valid?

MD XF

I guess so...

Have fun with +100 rep :P

See if Dennis calls you out on it

Okx

Gotta try I guess :P

Anonymous

@Okx I don't think so, not without the program harness. Nothing is actually returned - it's just a quirk of the compiler and runtime that (null) is printed for the return value function that does nothing.

Okx

7:44 AM

hm

but would that still technically be the output of it?

Anonymous

No, the output of that function would be an int (by default return value rules), though it is undefined what gets returned (I guess 0?)

Okx

Interesting.

Anonymous

With %i, 0 is printed

Anonymous

So IMO it's more the printf implementation that's doing the work

Anonymous

@ASCII-only Your Python solution to the states challenge is very clever and a much better way of going about the problem than mine, nicely done

ASCII-only

7:48 AM

@Mego haha thanks

fergusq

@KritixiLithos I forgot a file from the commit. Fixed it.

ASCII-only

I have like three different searches going on to find better solutions

Anonymous

But I like mine because it (ab)uses byte-strings :P

ASCII-only

Wait I can do RLE compression on the whitespace

MD XF

@Mego watch me golf 44 more

Dang yours is still way shorter though

Cyoce

7:53 AM

Which Ruby prepend syntax looks nicer? [strawpoll]

Anonymous

Which one? Python or Actually?

Anonymous

@Cyoce My vote is solely based on Python syntax :P

MD XF

Wait whoa

Is anyone else getting an error going to their profiles?

Cyoce

@Mego but doesn't Python support that too?

MD XF

We apologize for any inconvenience, but an unexpected error occurred while you were browsing our site

Anonymous

7:56 AM

@Cyoce I don't think so. It might be a new-ish feature (in 3.6 or something) that I'm not familiar with

Anonymous

@MDXF Nope

Cyoce

@Mego python.org/dev/peps/pep-0448

So 3.5 I guess

Anonymous

Huh. Seems I never finished learning 3.5

Mayube

8:13 AM

oh boy only 6 rep away from hitting 1k

Okx

@Mayube ok i will serial down vote no worries

Mayube

@Okx 👍

New Meta Posts

8:31 AM

0

Q: What's going on with my account?

Whenever I try to go to my user profile I get redirected here. I can't view achievements or reputation changes (in the top nav bar), but I can view inbox messages. This has been happening for about an hour. I asked TNB if anyone else was experiencing this, no one was. What's going on?

support bug user-accounts error

MD XF

predicts future @Mayube is about to hit 1k

Oh wow, lookit that! Mayube hit 1k!

Okx

@MDXF you were supposed to serial downvote

MD XF

@Okx Welcome to PPCG Chat! Before chatting, please read The Chattiquette and how to Be Nice! Thanks, and I hope you enjoy your time here!

*mic drop*

Okx

@MDXF but i already chatted

MD XF

8:46 AM

...

Mayube

woo there it is 1k rep :D

MD XF

@Mayube, with specific emphasis on the last example

I'm at 997 rep! Only one more vote needed to hit 1k! hint hint... = utter garbage, and add nothing to the site, the chatroom, or the community.

:P

Anonymous

@MDXF Be Nice.

Anonymous

@Mayube Congratulations! :D

Shaggy

Grats, Mayube :)

Mendeleev

9:03 AM

@MDXF That person has been here for months...

numbermaniac

codegolf.stackexchange.com/q/122896/65532 this question is tagged with kolmogorov complexity, but is it actually? tag wiki: "kolmogorov-complexity is not about challenges that produce a string that varies depending on a parameter!"

Jan Dvorak

The tag wiki is wrong

Mayube

@numbermaniac I'd say it is because ultimately kolmogorov complexity is about string compressability, and that challenge is about string compressability too kinda

Destructible Lemon

;_; blod socer was a fail

blodsocer must commit sepuku now probably

ASCII-only

@DestructibleLemon you didn't build that in so it has to suffer for all eternity

flawr

9:23 AM

Wanna hear a nerdy joke?

Destructible Lemon

fine

flawr

"In Mathematics, 0!=1, in computer science, 0!=1." - source

Destructible Lemon

you forgot the "What's up with that?"

Okx

@flawr That is correct. 0 factorial is equal to 1.

:P

Mayube

it would've been easier to read had he used inline code snippets

In mathematics 0! = 1, in computer science 0 != 1

flawr

9:30 AM

that would spoil the joke :)

New Main Posts

9:44 AM

-1

Q: Memory allocated for block of code

I know it's off-topic but I googled it al lot and asked on many communities how do you find size of memory allocated for your whole program Or just block of it Do you calculate it manually or using a tool especially in languages . C,php ,python I'm sorry ,I'm newbie nd it's important ...

fastest-code python php

Qwerp-Derp

9:54 AM

@NewMainPosts If you know it's off-topic, why post the question?

sigh

@Mego Also, I posted an answer to your question (I outgolfed the other Clojure answer! :D)

Maatouq

10:08 AM

How do you guys calculate memory allocated for your program or just block of it ? Do you calculate it manually or using a tool especially those who use python , c , php

Mayube

@Maatouq I can't imagine most of us have ever had to calculate allocated memory

ASCII-only

@Maatouq Task Manager :P

@Maatouq What you probably want is a profiler for whichever language you're using

Qwerp-Derp

@Maatouq I haven't calculated allocated memory before for Python (only language of three languages given that I know how to program in), but a quick google search gave me this SO question, which has links to lots of tools.

Maatouq

10:29 AM

@Qwerp-Derp what I really mean when you guys write a solution for puzzle you writ as ex

Qwerp-Derp

@Maatouq ???

Maatouq

@Qwerp-Derp what I really mean when you guys write a solution for puzzle you writ as ex php 39 byte

Qwerp-Derp

Yeah, but your post was more like a general programming question, as opposed to a challenge.

What exactly are you trying to ask?

ASCII-only

@Maatouq That's code length, not memory used btw

Maatouq

@ASCII-only you mean it's just size of text file

Mayube

10:34 AM

@Maatouq pretty much, it's a better way of measuring code length than characters, because some languages use Unicode characters that are more than 1 byte

Maatouq

@Mayube thank you

Qwerp-Derp

Oh, that's what you mean

Whoops, sorry :P

Maatouq

@Qwerp-Derp never mind it's ok :))

Shaggy

10:53 AM

1

A: Sandbox for Proposed Challenges

Set The Shapes code-golfarray-manipulationmath Updated on 23/05/17 with new shapes & questions Challenge Let s be the sequence of polygonal numbers with S sides and t be the sequence of polygonal numbers with T sides. Take the set union of the first n elements of s and the first n element...

Need a few people to look over that for me and answer the questions, please :)

TuxCopter

hello

Shaggy

@TuxCopter 'Lo

totallyhuman

11:17 AM

I did something to break something

And I don't know what either something is :D

Qwerp-Derp

sigh SO is kind of cancer, in the fact that people don't comment about why they downvote...

3

Erik the Outgolfer

@totallyhuman it looks like you just took a snapshot and drew over it

totallyhuman

Nope

Something's actually broken

Erik the Outgolfer

reboot your device?

totallyhuman

Tried

Destructible Lemon

11:32 AM

what should I call my welcome to the dungeon koth?

Erik the Outgolfer

@totallyhuman is it only in the SE app?

Destructible Lemon

o i know

Dungeon of Botdom

because the original was Dungeon of Mandom

I'm not sure which items to use though

totallyhuman

Nope

Qwerp-Derp

@DestructibleLemon What happened to your maze KoTH?

Or is this the same thing

totallyhuman

Everything >_>

Destructible Lemon

11:33 AM

it kinda just dissolved

it was too hard for me to make a bot, and I developed the darn thing

this is simpler

Erik the Outgolfer

tfw Dennis gets stars just for a sigh

Destructible Lemon

(no he got it for an intentional typo joke)

it was qutie amusing

Erik the Outgolfer

but he has got stars for other sighs too right?

Destructible Lemon

don't think so

also why does everyone call things cancer so often. seems kinda insensitive

Erik the Outgolfer

he has even got stars for an emojp (not emoji) I think

Qwerp-Derp

11:44 AM

@DestructibleLemon Hmmm, it's just the internet, I think.

Destructible Lemon

(you're one of those people)

(just in case you forgot)

0

A: Sandbox for Proposed Challenges

Dungeon of Botdom Bots will play a variant of this game: https://boardgamegeek.com/boardgame/150312/welcome-dungeon (Our version will be played by one bot versus another bot, and there will only be one character, which may or may not be in the actual game, and it will be repeated a bunch.) Es...

New Sandboxed Posts

;-; I'm not that slow

2

Destructible Lemon

too slow, sandy

I forgot you existed

4

hey, person who starred that message? instead can you comment on my sandbox post

i don't know, it'd just be nice

New Main Posts

12:01 PM

0

Q: Generate many addresses from one address line

Same question posted on https://stackoverflow.com/questions/44199250/generate-many-addresses-from-one-address-line?noredirect=1#comment75413933_44199250 but I didn't find any solution so I am here. If you think this question is inappropriate for this community let me know I will delete it. So t...

code-golf string regular-expression

0

Q: My [sub] strings are hiding!

Introduction A while ago a lost SO user posted a question here and its now been deleted but I think it would make a good challenge so here it goes... Challenge Write a full program or function that takes two strings and checks whether any permutation of the first string is a sub-string of the ...

code-golf string search

Erik the Outgolfer

I don't know if Jelly has been beaten as harshly as ½ before

wait where did the tacoscripts go?

user165474

12:17 PM

@EriktheOutgolfer they appear to still be here for me (using CaretReply). It seems to work (viewing using ChatPreview).

user165474

😄

user165474

sent using EmojiButton

user165474

¯\_(ツ)_/¯ (using ChatCommands)

Erik the Outgolfer

ooh suddenly they appeared again

user165474

ooo :D

user165474

12:35 PM

i like how my idea about starbait-trolling is still getting stars

user165474

12:48 PM

why is this place so quiet ;_;

ASCII-only

@HyperNeutrino IDK

user165474

(btw that's everyone's cue to make this place un-quiet)

ATaco

Yay, tacoscrips!

user165474

s/p/pt/

ASCII-only

@HyperNeutrino No, taco scrips

ATaco

12:51 PM

Shh, I'm on a phone

user165474

o.o

user165474

idea: make a tacoscript to star the -nth message using n stars

user165474

star -> asterisk

user165474

so like *** would star 'o.o'

user165474

(also ninja-proofing ofc)

totallyhuman

1:02 PM

screams into the void

ATaco

You can use ^^^*

user165474

:o

ATaco

That's a part of caret reply

user165474

ooo cool

user165474

can you also unstar with caretreply?

ATaco

1:05 PM

I think it should work

user165474

yay

ATaco

Also, idea: make tacoscripts officially endorsed by the ROs

ASCII-only

@ATaco pls no

ATaco

Endorsed is not enforced.

user165474

@ATaco also idea: make tacoscripts offivially endorsed by SE

totallyhuman

1:06 PM

except the emoji button 🙃

ATaco

Emoji button was removed from the git

Anyway I'm going to sleep now

Gnight

totallyhuman

aw man i tried to abuse caret reply and star my own message

byeee

user165474

o/

totallyhuman

@totallyhuman because i can abuse that and reply to my own message

user165474

I shall be having a Fire Drill in about 5 minutes.

user165474

1:09 PM

So I may suddenly disappear for a bit.

totallyhuman

i just had an evacuation drill

user165474

ooo for what

totallyhuman

:shrug:

ASCII-only

@HyperNeutrino not possible

user165474

:(

totallyhuman

1:10 PM

@totallyhuman uhm what was the syntax for that one again

user165474

/ s h r u g

user165474

if you have ChatCommand

totallyhuman

oh

yeah

¯\_(ツ)_/¯

user165474

this isn't discord :P

user165474

;)

totallyhuman

1:11 PM

ლ(ಠ益ಠლ)

hehe

user165474

eh what

user165474

ಠ_ಠ

totallyhuman

ಠ___ಠ

user165474

feature-request Allow deletion using CaretReply (something like ^^^DEL)

totallyhuman

^^~

or wait better

^^¬

just negate the message

user165474

1:13 PM

not typable 0/10

ASCII-only

the best would be carets + literal delete key

user165474

Fire drill will be very soon (hehe i don't like this song just felt like linking to it because why not :D)

totallyhuman

don't have a delete key 0/10

user165474

o.o

ASCII-only

@totallyhuman lol then don't use a mac

totallyhuman

1:15 PM

nope try again

user165474

phone?

user165474

isn't alt-backspace == delete on mac?

user165474

or is that chromebook

totallyhuman

@HyperNeutrino i wouldn't be able to use userscripts then :P

user165474

alt-backspace is the usual ctrl-backspace on Konsole

user165474

1:15 PM

@totallyhuman >_> i'm dumb

totallyhuman

@HyperNeutrino ding ding ding

user165474

ooo

user165474

then use alt-backspace

totallyhuman

extra keystroke 0/10

as code golfers...

user165474

~ requires two keystrokes too

totallyhuman

1:16 PM

...fair point

user165474

the negate thingy requires even more

user165474

because I can't even type it normally

totallyhuman

for me, only two

user165474

ooo

totallyhuman

depends on layout

user165474

1:17 PM

intl US?

totallyhuman

...it's a chromebook variation of it "US Extended"

user165474

ah ok

user165474

the fire drill was supposed to start 3 minutes ago...

totallyhuman

there's also the international version

user165474

Ah. OK.

totallyhuman

1:18 PM

ah ok -> Ah. OK. what happened

lol

looks for how to make a KOTH challenge

user165474

@totallyhuman lol idk

totallyhuman

is still confused

any suggestions on what to see before making my first KOTH?

user165474

the sandbox

user165474

:)

user165474

1:34 PM

Jan 28 '11 at 4:35, by Feeds

Welcome to chat for: Code Golf

user165474

first message :P

betseg

If the husband of the prime minister of Luxembourg is the "First Gentleman" of Luxembourg then which gentlemen is the prime minister himself?

PhiNotPi

@betseg 0-indexing

user165474

The prime minister, I would presume. The husband of the prime minister cannot be the prime minister unless one can marry him/herself; then, it would not make a difference.

PhiNotPi

@totallyhuman what ideas do you have?

betseg

1:37 PM

@PhiNotPi then who is the zeroth lady of the US? :OOO

totallyhuman

a checkers KOTH

user165474

1. check if there is an active KoTH right now. I don't think so but having two active KoTHs at the same time is usually not a good idea.

PhiNotPi

@betseg take a guess (lol)

Downgoat

@betseg the husband of the first husband acording to wikipedia

user165474

@totallyhuman I'm working on a KoTH right now if you post first then I'll wait until yours becomes less active and probably vice versa. Yours will be considerably easier than mine so if they're both posted then yours will probably get more answers but I'm fine with that :)

totallyhuman

1:41 PM

no i'll wait

it'll probably take longer for me to get it right

user165474

no it's fine I probably won't finish my controller until like a week from now (because I don't want 50 bugs in it like last time :P)

user165474

and the rules of my game (chinese chess) are more confusing than checkers

Downgoat

@Mendeleev oh >_> idk if I should discuss, but in that context it just means to "leave TNB because of suspension"

quartata

I'm not sure why this was deleted 4 years later: codegolf.stackexchange.com/q/15668/45151. It had a ton of answers and I think would have been of more value as a signpost anyways

@ConorO'Brien @Riker @HyperNeutrino

user165474

@quartata It seems to make sense now so I'd actually undelete and reopen now (I think at the time I deleted it I misread something about it). One question that I have though is, how do you input a real number? You can only input rational numbers unless you require infinite input.

quartata

1:54 PM

If the language supports it, symbolically

but really that just means that it should in theory work on a real number.

user165474

Makes sense.

quartata

I do think it should stay closed in its current form but I also think it would have been trivial to edit it a little bit to make it better

In fact I might just do that

user165474

I agree. I've voted to undelete and reopen it because it makes sense and doesn't seem unclear to me but some edits might be nice as well. In fact it could be a considerable idea to repost it.

quartata

...since when do we need 4 delete/undelete votes?

user165474

I thought only 3 were needed. Weird.

quartata

1:57 PM

ohhh I remember now

See this is to prevent things like this from happening

user165474

oh :I

quartata

It scales based on the top answer's score

42

A: Should delete votes be limited like close votes?

We had discussed this before, but deferred until there was a problem - it seems we now have a problem :) The new rules (also apply to undelete votes): 10k rep users get 5 deletion votes per day on questions they don't own - deletion rules on questions one does own are still in effect. Popular ...

user165474

Ah, makes sense.

user165474

1 more vote

user165474

Any reopen votes?

flawr

2:15 PM

@Riker you're going to like this one :D

Nelson Casanova

Good day

user165474

Hello.

Phoenix

CMC: Take input until given a char not equal to the very first one given, then terminate. As input is infinite it must be from StdIn.

Nelson Casanova

@HyperNeutrino whats happening!

Phoenix

A CMC, as you can see.

New Main Posts

2:26 PM

1

Q: What color is this?

You are to golf a program that will take a filename as input and you must output what color the file is. The file will have any one of these extensions but your program only needs to support one. Please say which one in your answer. .jpg .png .svg .gif And now to the classic layout. Input ...

code-golf image-processing

Kritixi Lithos

@Phoenix I will first answer ∧ and then come to your CMC

CMC?

Chat mini challenge

AH!

@KritixiLithos I'm thinking of how to answer it myself, I've never used ImageMagik before tho so it's a bit of a pain.

user165474

2:29 PM

Java, too many bytes: class M{public static void main(String[]a)throws Exception{int i=System.in.read();while(System.in.read()==i);}}

Kritixi Lithos

I'm using Processing

user165474

when you do a CMC in Java ;)

Riley

@Phoenix 05AB1E, 5 bytes: [¹IÊ#

Mayube

@Phoenix Braingolf v0.7, 10 bytes [{e?E:$_|]

Phoenix

@Riley Does 05ab1e not have a builtin for reading a single char without consuming the newline?

Riley

2:35 PM

@Phoenix I thought you meant until a line was not equal. Either way, I don't think you can read a byte at a time.

Business Cat

@Phoenix Solace, 9 bytes: k{$k=}{}U This would be shorter if I bothered to finish the language

Oh wait

I misread

k{$k=}{}W Should work instead

Phoenix

GitHub?

Business Cat

@Phoenix github.com/splcurran/Solace

MD XF

@HyperNeutrino Did he get banned?

user165474

suspension, nvm shouldn't discuss it

MD XF

2:41 PM

Yeah

Business Cat

o_o

Mayube

y'know @HyperNeutrino I'm surprised you haven't made your own golfing language, you seem like the kind of person who would :P

user165474

Why do I seem like someone who would?

user165474

This is an esoteric language though it's not very golfy. It does operate in a fairly interesting manner though.

user165474

Oh I should upload my postfix language so I can actually use it.

user165474

2:45 PM

it's kinda horrible though because I made it before I knew how to code design properly ;_;

user165474

@Mayube github.com/alexander-liao/postfix-lang

totallyhuman

sorry my d key's broken :/

MD XF

HOLY CRAP I BEAT THE SHORTEST C QUINE IN THE WORLD

(again, I'd already beaten it once :P)

Kritixi Lithos

where?

MD XF

here, now I have to update my open-ended bounty

Adám

2:59 PM

Please star this:

11

Q: What are the PPCG specific abbreviations?

Newcomers to PPCG are often compelled to ask what many of our abbreviations stand for. Let us list them here so this information always will be easily available.

discussion chat new-users faq-proposed

4

Open PPCG Minecraft Server

Transcript for