The Nineteenth Byte

12:44 AM

@J.Sallé I once moved an entire linux distribution to /www/. Never give a client access to things they shouldn't touch, even if you trust them.

Anonymous

1:11 AM

Clients are much like children in that regard

Anonymous

Also the screaming, crying, and inability to comprehend simple concepts and follow simple directions

ATaco

"a common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools"

7

lirtosiast

7:54 AM

@MilkyWay90 Also it's pronounced rep-rex, but means repr-ex. I don't like morpheme boundaries in the middle of my syllable boundaries.

New Sandboxed Posts

8:39 AM

0

A: Sandbox for Proposed Challenges

Just idea. Not sure what to do exactly. Evolutionary Golf code-golf answer-chaining restricted-code Make simple (not golfed at all at first) code for (some program) with language (something). Now, change a little bit (maximum 3 byte) of code to make it shorter. Altered code must work properl...

Neil

9:12 AM

@ATaco My next-door neighbour once managed to move an important directory, but as I recall this was Windows 9x so there wasn't much to prevent them.

Anush

4:06 PM

hi all

DJMcMayhem

o/

Anush

in python, if I have bin edges and counts for each bin, is there a nice succinct way to sample from the probability density function this implies?

John Dvorak

such PDF doesn't sound unique

DJMcMayhem

@Anush What do you mean by bin-edges?

Anush

let me explain. Say bin_edges = [0,2.1,6.3,23.5]

and counts = [5,2,10]

the probability density function is a step function with steps at [0,2.1,6.3,23.5] and the probability of falling in the first step/bin is 5/(17* 2.1)

the prob of falling in the second bin/step is 2/(17*4.2)

and so on

does that make sense?

DJMcMayhem

4:13 PM

Yes, that makes perfect sense.

Anush

if you fall in a bin/step the value you get is uniformly sampled from the x-values of the step. So if you fall in the first step it is uniform between 0 and 2.1

@DJMcMayhem cool! :)

DJMcMayhem

Unfortunately, I don't know enough about how to calculate a pdf to help you

Anush

I feel there will be some numpy/scipy magic to just do it for me succinctly

but I don't know what it is

@DJMcMayhem no problem at all

@JohnDvorak ?

maybe it should be a ppcg challenge :)

MilkyWay90

5:09 PM

67 consecutive days I just need 33 more days for the Fanatic badge

DJMcMayhem

I had over 1000 until I broke my streak recently.

MilkyWay90

It will be my first gold medal

@DJMcMayhem Woah!

I hope I go for a vacation after July 29th

It is my 2nd or 3rd time getting close to the Fanatic badge

But a vacation ruins it everytime

One day I got 97 consecutive days

Veskah

Just leave your computer on with an F5 autoscript

ezpz

MilkyWay90

My computer gets shutdown

Which is also a detriment to my NationStates auto-telegramming program

Maybe I could do that, actually

hmm

@Veskah I could do an AutoHotKey script for Ctrl-R

But are bots allowed?

DJMcMayhem

@DJMcMayhem I know of a user with almost 2000 consecutive days

ThePlasmaRailgun

5:17 PM

If it's a bot with golfed or obfuscated source code, then it's in the spirit of this site even if it's not allowed

MilkyWay90

@DJMcMayhem Woah

@ThePlasmaRailgun AutoHotKey can almost never be golfed

ThePlasmaRailgun

True

But if it's something else, it could probably be golfed

Veskah

VIM commands to generate the AHK script

ThePlasmaRailgun

HAHA

I love vim, it's such a meme

MilkyWay90

22

Q: Multiply two numbers

Input: Two decimal integers. These can be given to the code in standard input, as arguments to the program or function, or as a list. Output: Their product, as a decimal integer. For example, the input 5 16 would lead to the output 80. Restrictions: No standard loopholes please. This is code-go...

I think I'm going to try this in Geometry Dash

DJMcMayhem

5:25 PM

@ThePlasmaRailgun Ooh, that reminds me of a CMC: Implement the <C-a> (increment) command. Given a printable ASCII string s, and an integer n, essentially, put the cursor on column n, and increment the next integer found in the string.

Test cases (all 1-indexed):

ThePlasmaRailgun

HMM

DJMcMayhem

s: "The number 6.", n: 1, output: "The number 7."
s: "The number 6.", n: 13, output: "The number 6."
s: "Test with negatives: -1", n: 1, output: "Test with negatives: 0"
s: "Test without negatives: - 1", n: 1, output: "Test without negatives: - 2"
s: "1 2 3 4", n: 1, output: "2 2 3 4"
s: "1 2 3 4", i: 2, output: "1 3 3 4"

ThePlasmaRailgun

That would be very interesting!

I saw a really cool thing someone made, it was a sed script calculator

sed.sourceforge.net/grabbag/scripts/dc.sed

Veskah

@MilkyWay90 Also, you only need to Ctrl+R once a day (twice a day if you're worried about missing server rollover). Your bot would probably get lost in the noise

DJMcMayhem

I'll give a cookie to the first person to answer with a text editor

ThePlasmaRailgun

5:26 PM

Haha

MilkyWay90

@Veskah Oh

ThePlasmaRailgun

I actually want to try that now...

MilkyWay90

@ThePlasmaRailgun Try what?

DJMcMayhem

It should take 6 bytes in vim

ThePlasmaRailgun

The successor function in a text editor

Erik the Outgolfer

5:27 PM

@DJMcMayhem vim, 1 byte:

ThePlasmaRailgun

int add(int x, int y) {
return !y ? x : add(x ^ y, (x & y) << 1);
}

That's a kind of formula you could try and follow

DJMcMayhem

@EriktheOutgolfer How are you taking n as input?

ThePlasmaRailgun

Just adding and carrying

Ok, I think I have a simple idea for a two-regex process to increment a number

It doesn't handle negatives though

Anyways, what ends up happening is you need one substitution to make a lookup table appear at the end of the number

DJMcMayhem

@DJMcMayhem Oh, forgot to mention: You don't have to implement any number format other than decimal

Erik the Outgolfer

@DJMcMayhem I saw "implement <C-a>" and answered :D

ThePlasmaRailgun

5:39 PM

Does TIO do multiline sed commands?

Arnauld

If anyone's interested: codegolf.meta.stackexchange.com/a/17823/58563

John Dvorak

Maybe it's finally time to get my Bubblegum compiler running ... nah. Not worth it.

Veskah

5:54 PM

I here to kick ass and fire up my compiler

MilkyWay90

This is what I've got so far for multiplying two numbers

Erik the Outgolfer

@DJMcMayhem um... how does one manage to read a number in less than 10 bytes

MilkyWay90

50% done with the nondestructive addition

DJMcMayhem

@EriktheOutgolfer It's input to the buffer

Erik the Outgolfer

but I don't think there's any way to handle a number other than <C-a> or <C-x>, right? and I don't think those two can really provide anything useful

DJMcMayhem

6:05 PM

If you had a way to repeat them they would

Erik the Outgolfer

you mean the operand?

DJMcMayhem

Yeah

Wait, I forgot my own CMC, my advice is bad don't listen

You use the number to get to a specific column my bad

Erik the Outgolfer

yeah, that's what I was going to ask next :D

like, is it possible to put a number in the buffer as an operand? (ah... if I used V life would be easier...)

DJMcMayhem

Do you know how macros and registers work?

Erik the Outgolfer

kinda just read about them :P

from what I read, eh... I did think of using a q...q or something, but can it really interpret the value in the register as a number?

DJMcMayhem

6:10 PM

So qq...q puts ... into register "q. But that's not the only way to get something into a register

You can also use the various delete commands

Erik the Outgolfer

tbf I do want to delete the input :P

oh, so I put the value in the register, append with a qA...q and run the macro?

that... seems kinda longish

DJMcMayhem

Not quite

ThePlasmaRailgun

@DJMcMayhem I've got a series of 10 PCRE regexes that accomplish the incrementing of numbers!

tio.run/##dY/NasMwEITveooxycF2WbSSf0Ua/…

DJMcMayhem

@EriktheOutgolfer Do you want more concrete help, or just vague tips? lol

Erik the Outgolfer

hm, dd""|<C-a> doesn't seem to work...

ThePlasmaRailgun

6:19 PM

What do you guys think of my regex?

DJMcMayhem

@EriktheOutgolfer That's actually incredibly close

ThePlasmaRailgun

Actually, regexes, but you get the point

Erik the Outgolfer

@DJMcMayhem oh whoops it looks like I'm catching a leading newline

DJMcMayhem

And also "" isn't how you run register "

Erik the Outgolfer

yeah I guess I should use @"

wait no that won't work

DJMcMayhem

6:24 PM

Yes it will

ThePlasmaRailgun

Wait, are you guys trying to do it with vim?

Erik the Outgolfer

yep

ThePlasmaRailgun

Oof

Erik the Outgolfer

and I'm not exactly known for my proficiency in that :D

ThePlasmaRailgun

Does vim support PCRE regexes?

DJMcMayhem

6:24 PM

Yes (I think)

ThePlasmaRailgun

Then my program SHOULD work

Erik the Outgolfer

@DJMcMayhem gvim outright made a warning sound with that though

DJMcMayhem

What was your full keystroke sequence?

Erik the Outgolfer

dd@" and then it got rejected

DJMcMayhem

Ah, yes

Erik the Outgolfer

6:25 PM

it was supposed to be dd@"|<C-a>

DJMcMayhem

> oh whoops it looks like I'm catching a leading newline

Erik the Outgolfer

oh so that's still an issue? and I thought @" was magic

DJMcMayhem

It runs whatever is in " which includes the newline. So you get <n><cr>| and <n><cr> most likely tries to go out of bounds

Erik the Outgolfer

so... how do I put the input in the register without the newline? because putting it on top instead of at the bottom doesn't help

DJMcMayhem

dw, or de, or diw, or d$, or D or whatever

New Meta Posts

6:31 PM

0

Q: Is it all right to edit challenge to recognize the winner?

I know that the best answer in a code golf challenge should be the accepted one. Is it a good idea to add a "final positions table" to the end of the post once a winner is found? Something like this: Congratulations! Final positions: 1. FooLang, 25 bytes, by JohnDoe 2. BarLang, 37 bytes...

discussion code-golf

Erik the Outgolfer

@DJMcMayhem so that leaves a trailing newline... that's what I was afraid of with D

it's allowed, but it's ugly :(

DJMcMayhem

@EriktheOutgolfer You want to know my favorite vim-trick?

DJ. For two different reasons :D

Erik the Outgolfer

so I put the input above?

DJMcMayhem

Yep

Erik the Outgolfer

weird how it doesn't include a leading space

New Main Posts

7:05 PM

0

Q: Rotate 2D string array 45 degrees

Your task is take an integer and generate a 2D Array from it and then rotate it 45 degrees. For example if you are given the integer 3 your 2D Array should look like this: a = [["0", "1", "2"], ["3", "4", "5"], ["6", "7", "8"]] and your rotated output would look like this: b = [[" "...

array-manipulation

DJMcMayhem

I'm almost positive that's a duplicate

2

Veskah

7:18 PM

Didn't see which challenge dzaima linked but this is pretty close

dzaima

@Veskah yep, that's what I linked, but the new challenge has a bit more attached. I'd still say it's a duplicate though

Veskah

Hmm, if padding is required, the doubly-wide entries might make it novel enough to leave it open

Neil

7:55 PM

Server Error in '/' Application.
Runtime Error
Description: An exception occurred while processing your request. Additionally, another exception occurred while executing the custom error page for the first exception. The request has been terminated.

Erik the Outgolfer

pretty sure I've seen that one somewhere before...

Blue

Is SO dead?

Poke

8:22 PM

not for me

New Main Posts

9:58 PM

0

Q: Two palindromes are not enough

Some numbers, such as \$14241\$, are palindromes in base 10: if you write the digits in reverse order, you get the same number. Some numbers are the sum of 2 palindromes; for example, \$110=88+22\$, or \$2380=939+1441\$. For other numbers, 2 palindromes are not enough; for example, 21 cannot be...

code-golf

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