The Nineteenth Byte

TùxCräftîñg

2:00 PM

@Downgoat import everything in java.util

SuperJedi224

^

Downgoat

Y?

whats ot contain

Sherlock9

@LeakyNun And because it returns floats, the code falls just short of getting B(60) right. actually.tryitonline.net/… with B(57) should return [0, 1]

SuperJedi224

Queue and LinkedList

Leaky Nun

@Sherlock9 submitted pull request

Rohan Jhunjhunwala

2:01 PM

@Downgoat java.util is a package

importing everything in it with java.util.*

Leaky Nun

@Sherlock9 Do you have the command list at the time the challenge is posted? Or do you plan to make a non-competing answer?

SuperJedi224

@Downgoat I'm using the LinkedList and Arrays classes from java.util here, plus the Queue interface

Rohan Jhunjhunwala

and it contains lots of useful classes and methods like QUeues and LInkedList (According to SuperJedi (I never actually remember whats in it lol))

@SuperJedi224 isn't there an impllementation already in the standard libraries?

SuperJedi224

LinkedList implements Queue.

That's actually how I'm using LinkedList in this case.

Rohan Jhunjhunwala

Does a DeQueue implement QUeue?

Sherlock9

2:03 PM

@LeakyNun Non-competing. I don't have a command list at the time the challenge was posted and I'm fine with non-competing

Leaky Nun

Noted. So you can wait until Mego merges.

in the meantime can you round it down?

Rohan Jhunjhunwala

@Downgoat if you are interested see this Stack OVerflow

326

Q: Is a Java string really immutable?

We all know that String is immutable in Java, but check the following code: String s1 = "Hello World"; String s2 = "Hello World"; String s3 = s1.substring(6); System.out.println(s1); // Hello World System.out.println(s2); // Hello World System.out.println(s3); // World Field field =...

SuperJedi224

@Downgoat docs.oracle.com/javase/8/docs/api/java/util/…

@Sherlock9 I don't think actually having any documentation available is a requirement for using a language here. Though having a functional, publically available (ideally free) implementation is.

Rohan Jhunjhunwala

@SuperJedi224 is a ArrayDequeu a classic fifo queu, I think thats what I had used for a fifo Queue when I needed one.

@SuperJedi224 *cough Mathematica *cough

Sherlock9

Yeah, I'm pretty sure no functional implementation of Seriously as it was on November 30, 2015 exists at the moment

Rohan Jhunjhunwala

2:09 PM

rofl

("ideally free")

SuperJedi224

I'm only 3 points away from reaching the next level on Drawception \o/

Rohan Jhunjhunwala

\o/ \o/

SuperJedi224

Wizard Luigi

(Maybe I should have given him a goatee as well.)

Sherlock9

@LeakyNun I used ≈. The code then works but not for 57, 58, 59, 60

Leaky Nun

@Sherlock9 that's like the most specific error message

10/10 very helpful

Adnan

2:18 PM

Out of curiosity, what is a normal hourly rate for programming in Python?

SuperJedi224

I don't know.

mınxomaτ

@Adnan 5

TùxCräftîñg

      {|+/2 0j2×-⌿2 2⍴+/'URDL'∘.=⍵} 'UUUUDRRRL'
SYNTAX ERROR
      {|+/2 0j2×-⌿2 2⍴+/'URDL'∘.=⍵} 'UUUUDRRRL'
      ∧

...

Sherlock9

@LeakyNun I don't know what to tell you

I have no idea where the problem is

It might be an entirely different bug, for all I know

DJMcMayhem

@Adnan About tree fiddy

TùxCräftîñg

2:25 PM

1

A: I'm walking around manhattan, how far am I from my hotel?

VB.net (Non-Golfed) Dim g = From c In "UDLR" Group Join d In directions On c Equals d Into q=Group Select q.Count Dim f = 2*Math.Sqrt((g(0)-g(1))^2 + (g(2)-g(3))^2)

wat

DJMcMayhem

Actually, I have no idea. Depends on experience, project, and location

Adnan

5 and 3.50?

That seems a bit low

TimmyD

@Adnan Blame Brexit. Messed up the world economies.

;-)

Adnan

Ohhh shots fired(?/!)

Nathan Merrill

@mınxomaτ Ok. I don't really use github much for anything besides git pushes and pulls, so hopefully I'll see it :)

DJMcMayhem

2:29 PM

@Adnan Where do you live? That's the biggest factor.

Adnan

The Netherlands

Nathan Merrill

@Dennis I may or may not be wondering whether it was TIO

TimmyD

@Adnan A very weak-joke shot fired.

SuperJedi224

github.com/SuperJedi224/Brainforce

Rohan Jhunjhunwala

@SuperJedi224 are you sure your code for [] is correct?

TùxCräftîñg

2:33 PM

it look correct

SuperJedi224

@RohanJhunjhunwala It runs the Brainf*** "Hello World" from esolang correctly

Rohan Jhunjhunwala

Jumping back to the last bracket wont work, you need to jump to the matching bracket. My BF interpreter is similarly borked

SuperJedi224

And the cat program

Rohan Jhunjhunwala

@SuperJedi224 try something more complicated

DJMcMayhem

@Adnan Google says €7-60 (for a software developer, not necessarily python)

Lynn

2:33 PM

@Adnan payscale.com/research/NL/Job=Software_Engineer/Salary

TùxCräftîñg

to execute a bf code, i use a 2 pass interpreter: build a 'loop map', and then use this map to jump

Lynn

Median €17 sounds right.

SuperJedi224

if(prog[i]==']')k++;
if(prog[i]=='[')k--;

βετѧ Λєҫαγ

Hey guys

Leaky Nun

@Sherlock9 I don't know how to fix it.

TùxCräftîñg

2:34 PM

@SuperJedi224 <C-k>

Sherlock9

Yeah, I'll see what I can do

I can't print enough output either

DJMcMayhem

@Lynn that's roughly what I make, so sounds about right

Rohan Jhunjhunwala

Please halp my borked code?

/**
 *
 * @author rohan
 */
public class Brains {

	/**
	 * @param args the command line arguments
	 */
	public static void main(String[] args) {
		System.out.println("Enter a valid BF program");
		String bfProg = (new java.util.Scanner(System.in)).nextLine();
	char[] mem = new char[6400000];
		int dataPTR = 0;
		int pgrPTR = 0;
		Stack<Integer> stack  = new Stack<>();
		while (pgrPTR < bfProg.length()) {
			switch (bfProg.charAt(pgrPTR)) {
				case '>':
					dataPTR++;
					break;
				case '<':

My jumping seems to be not good.

TùxCräftîñg

please use <C-k> to indent code

Rohan Jhunjhunwala

fixed

Mitch Schwartz

2:36 PM

@MitchSchwartz s/\(.*// , what i meant was that my previous comments were already taking into account the particular way the bot was sending pings

oof, i didn't know it would post my name, that looks weird

i thought it would probably just post the arrow so that it was clear which message i was referring to

TùxCräftîñg

@RohanJhunjhunwala look like NewbieFuck

esolangs.org/wiki/Newbiefuck

Sherlock9

@LeakyNun When I try to print in the inner loop of B(57), it's trying to print several hundred very large numbers and it doesn't go all the way to the end.

DJMcMayhem

@TùxCräftîñg +1 for vim-notation

Leaky Nun

@Sherlock9 heh, that isn't my problem

that's your out-of-memory problem

Rohan Jhunjhunwala

@TùxCräftîñg isn't that identical to brainf*** ?

TùxCräftîñg

2:38 PM

brainfuck jump to the matching ] if the current cell is 0

SuperJedi224

@RohanJhunjhunwala No

TùxCräftîñg

while newbiefuck treat ] as a noop

SuperJedi224

Brainf*** uses whiles, newbie uses do-whiles instead

Rohan Jhunjhunwala

oh f***

so how do I fix it? Can I ~~steal~~ borrow your code

Sherlock9

@LeakyNun Or TIO's.

Not enough output space

Leaky Nun

2:39 PM

Agreed

Sherlock9

I worked around it

Business Cat

So the only difference is that [] is a do-while instead of a while

TùxCräftîñg

@RohanJhunjhunwala recursive parser

or iterative

Rohan Jhunjhunwala

@TùxCräftîñg explain?

Lynn

IIRC if you make [] do-whiles, BrainFuck is no longer TC or something

Rohan Jhunjhunwala

2:39 PM

Oh whoops

Business Cat

You can't do if's properly anymore

I think

Rohan Jhunjhunwala

oh

Sherlock9

I put the list in register 2 every time, meaning it keeps overwriting the previous list. I only want to debug the last list since that's where the problem is, and that's what I get when I call register 2 at the end :D

Lynn

Yeah, there’s no longer any way to skip over code, so even a simple program like if (getchar() > 0) putchar(0) becomes impossible to write

Rohan Jhunjhunwala

oh,

SuperJedi224

2:41 PM

,[[-].]

Or, even shorter:

,[>.]

Sherlock9

@BusinessCat Belated explanation: It's a byproduct of using math.factorial() which returns floats

Leaky Nun

@Sherlock9 No.

See my PR.

Rohan Jhunjhunwala

Is it ok if i translate ] as an uncoditional jump to the matching [?

Business Cat

But that doesn't really make sense either, since all factorials are integers

SuperJedi224

@RohanJhunjhunwala Probably, if you implement [ to jump one character past the matching ].

TùxCräftîñg

2:43 PM

^

Rohan Jhunjhunwala

@SuperJedi224 I will

brb fixing borked code

Sherlock9

@LeakyNun Don't see it on the page github.com/Mego/Seriously/pulls

Leaky Nun

@Sherlock9 Oops, see it now

Sherlock9

Oh, they finally changed math.factorial() to int. Hooray :D

SuperJedi224

I just found a bug that sometimes happens in my interpreter if you end the program with a closing bracket

TùxCräftîñg

2:45 PM

@SuperJedi224 use a parser... ?

SuperJedi224

Simplest bugfix: Automatically add a space to the end of the program

Sherlock9

@LeakyNun I'll merge the pull request after whatever travis-ci is finishes its check.

Leaky Nun

@Sherlock9 When did you have write access

Nathan Merrill

Say you had to write a self-interpreter/compiler (without eval or any of that nonsense). Would you prefer to do it with a high-level language or low-level language (esolang)?

Sherlock9

@LeakyNun Well, it's only supposed to be for the docs branch

So never mind. I'll leave it alone

New Main Posts

2:49 PM

2

Q: Verify a solution to a generalized river-crossing puzzle

Image credit Marek Bennet Introduction A river-crossing puzzle is a type of logic puzzle in which you have some number of animals, objects, etc. to move across a river, but you only have a boat big enough to hold you and one other object. The catch is that some of the animals/objects can't be...

code-golf

Rohan Jhunjhunwala

<help-vampire type="shameless">

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package brains;

import java.io.IOException;
import java.util.Arrays;
import java.util.Stack;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author rohan
 */
public class Brains {

	/**
	 * @param args the command line arguments
	 */
	public static void main(String[] args) {
		System.out.println("Enter a valid BF program");

</help-vampire >

It is still borked.

Nathan Merrill

-.- the attribute goes on the opening tag

7

SuperJedi224

Goodbye for now

Rohan Jhunjhunwala

But in all seriousness, can someone help me figure out this bug?

TùxCräftîñg

@RohanJhunjhunwala .... inconditional jump on [?

Sherlock9

2:54 PM

@LeakyNun Oh for goodness' sake I found the gosh dang bug

Rohan Jhunjhunwala

@TùxCräftîñg yes

@TùxCräftîñg oh whoops

Im an idiot :(

Sherlock9

actually.tryitonline.net/#code=OjI1OjU34paI&input= is C(57,25) which here returns 9929472283517788.0

The result of C(57,25) is supposed to be drum roll 9929472283517787

Rohan Jhunjhunwala

@TùxCräftîñg it still is borked. Gives me an arra yindex out of bounds exception for the hello world program

TùxCräftîñg

the right form is :25::57:<white square>, no?

Rohan Jhunjhunwala

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package brains;

import java.io.IOException;
import java.util.Arrays;
import java.util.Stack;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author rohan
 */
public class Brains {

	/**
	 * @param args the command line arguments
	 */
	public static void main(String[] args) {
		System.out.println("Enter a valid BF program");

(I do apologize for seeming like a help-vampire) Please forgive me?

Sherlock9

3:00 PM

@TùxCräftîñg Mego removed the need for a second : a while ago

TùxCräftîñg

k

DJMcMayhem

@RohanJhunjhunwala Don't worry, you're not a help-vampire. Hv's just want someone else to figure it out for them and poof they're gone. You've been on this sight long enough, you're a stuck user needing help, not an HV

Sherlock9

> 3A (:): numeric literal delimiter: pushes the longest string of characters in '0123456789+-.ij' as a numeric

Rohan Jhunjhunwala

@DJMcMayhem thanks

Adnan

@Lynn Oh, that's a very useful site! Thanks :)

Leaky Nun

3:03 PM

@Sherlock9 I said it will be fixed when Mego merges it

Are you doing the challenge or not?

Sherlock9

Right, but I wanted to find out if there was another problem or not

Leaky Nun

I mean the challenge I linked

Syxer

@RohanJhunjhunwala I highly suggest decomposing this into methods which the switch statement calls conditionally. It'll help with bug-finding.

Rohan Jhunjhunwala

@Syxer yeah, I'll refactor once I get it working

TùxCräftîñg

so... refactor it?

Sherlock9

3:17 PM

@LeakyNun Done. codegolf.stackexchange.com/a/91112/47581

Leaky Nun

@Sherlock9 I thought we have established that using n is golfier

Sherlock9

It needs a while loop

Leaky Nun

@Sherlock9 n is a while loop

oh,

Sherlock9

How can I do n when I don't know how long it needs to run for?

Leaky Nun

I meant ╓

Sherlock9

3:19 PM

Alright, fair enough

mınxomaτ

OT: New GRiZ track is awesome.

Rohan Jhunjhunwala

I got it, finally a bf interpreter. It works! thanks fro the help all the generous users of tnb!

Now to create a troll transpiler to java...

Lynn

CMC: evaluate an expression in the grammar expr := digit | '<' expr expr | '>' expr expr, where < is a binary prefix operator returning its left argument, and > is a binary prefix operator returning its right argument.

Dennis

@Geobits @muddyfish @SuperJedi224 Please don't cast regular delete votes on spam. Getting the post deleted via spam flags helps the system identify spammers and block them before they can post it.

Lynn

<01 → 0
>01 → 1
<>345 → 4

El'endia Starman

3:26 PM

@Lynn I'm not sure that's such a mini challenge... :P

muddyfish

@Dennis Already taken note, talked in chat about it earlier

Geobits

Yeah, we came to that conclusion in here right after deleting :/

muddyfish

2 hours ago, by Adnan

Feb 14 at 19:40, by Dennis

@Downgoat @Adnan Please do not vote to delete spam. If the Community user deletes it because of spam flags, the post is automatically edited and locked. That does not happen if you manage to delete it by conventional means.

Geobits

It feels weird to use an actual flag. Haven't done it in a while, as the other tools are usually better.

Dennis

Ah, OK. Just woke up and didn't read the transcript yet...

Sherlock9

3:27 PM

I have a question for you all

TimmyD

42

Sherlock9

What is the world is going on with ColdGolf? I missed the whole debacle as I've been out and about this week

@TimmyD Always an excellent answer :D

Adnan

Yeah, I want to know too :p

TùxCräftîñg

^

Rohan Jhunjhunwala

That is the answer, but what is the question?

Poke

3:29 PM

@Sherlock9 He either really likes getting into circular discussions that end up proving his logic is poor or he's a great troll.

from what I can tell

Business Cat

And he posts irrelevant and/or nonsensical things, which are sometimes offensive/vulgar

Syxer

Yay I remember how to grep

Nathan Merrill

@Sherlock9 there hasn't been a single problematic instances, but lots of smaller ones. He'd often reply to people with a completely unrelated message, or debate about whether something he posted should have been deleted, and general nuisance

Poke

You should be able to learn enough about it via the star board

FryAmTheEggman

@Lynn I think this works: retina.tryitonline.net/…

Lynn

3:31 PM

That looks right!

Nathan Merrill

In all reality what he's doing isn't all that unique or interesting, the bigger problem was that there was flagging going on when flagging wasn't really appropriate

Adnan

Is he the reason behind the flagging discussion on meta?

Nathan Merrill

yes

FryAmTheEggman

Is resolving the right-most non-digit first always correct? I think it is ok, but I dunno I'm bad at grammars :P

Rohan Jhunjhunwala

Is no one else bothered by the automagical gravatar changes?

Like the gravatar next to my name in chat is NOT what I see at the bottom where I type...

Lynn

3:35 PM

Try CTRL-F5? Clearing your cache?

Nathan Merrill

@RohanJhunjhunwala gravatar takes a while to get through the server caches

muddyfish

@RohanJhunjhunwala I haven't noticed. Probably because I'm not using a gravitar

Nathan Merrill

it'll be there in a bit, don't worry

TùxCräftîñg

i still get a recursion error for f=s=>({'>':[f(s),f(s)][1],'<':f(s)})[t=s.shift()]||t :/

Rohan Jhunjhunwala

@NathanMerrill its gone on for a couple days, idk whats up with it, Its not thae big a deal, but it is interesting. I think there was a whole meta discussion on this

FryAmTheEggman

3:37 PM

I think you have a different gravatar for chat.stackexchgange, sometimes it thinks that's your main user

Business Cat

I use cat instead of gravatar so I haven't noticed

Releasing Helium Nuclei

Or if you're on Chrome, Press F12, then hold reload icon, then click the undermost button.

Nathan Merrill

@RohanJhunjhunwala it says your parent user is codegolf.stackexchange, which has the pink one

Lynn

Vim users (hi @DJMcMayhem): any idea on how to move to line 1 vertically without moving horizontally?

TùxCräftîñg

the same thing happen to me with HiggsBot

DJMcMayhem

3:39 PM

@Lynn for golf or for editing?

Lynn

I mean, 99999999k usually works, but

For golf :)

Releasing Helium Nuclei

@Lynn keep k? :P

Ninja'd :(

Rohan Jhunjhunwala

um..

what does my gravatar look like

DJMcMayhem

Well, there's :se nosol but that's hardly ideal for golf.

Releasing Helium Nuclei

@RohanJhunjhunwala purple and white

Lynn

3:40 PM

Huh: in chat it’s red. On your profile it’s brown.

Rohan Jhunjhunwala

@Lynn thats what confuses me lol

Apparently its a gravatar issue, and not an SE issue from what I read on the meta discussion

FryAmTheEggman

^ Yeah, I believe SE gives you a different gravatar for chat

DJMcMayhem

I suppose there's also qqk@qq@q but that's really ugly and doesn't work in o mode

In V there's <M-k> and <M-j> but that's probably not what you were looking for

Lynn

o mode?

Releasing Helium Nuclei

What does it do

DJMcMayhem

3:45 PM

@Lynn Operator pending mode.

Releasing Helium Nuclei

@DJMcMayhem what is it

DJMcMayhem

:31903468 that's still technically n mode. O mode is different

@ReleasingHeliumNuclei How much do you know about vim? (So I know how detailed to answer)

Releasing Helium Nuclei

@DJMcMayhem pretty high i believe

Sherlock9

@LeakyNun We should go through the Actually commands to see which of them don't return numerics, strings, lists and functions. This problem with range and zip and filter is starting to drive me nuts

DJMcMayhem

@ReleasingHeliumNuclei OK. Let's say you want to map to "2l". You can do nno l 2l but then dl will only delete one. That's where ono l 2l comes in

Leaky Nun

3:47 PM

@Sherlock9 I think it's only range and zip and filter?

DJMcMayhem

Does that make sense?

Lynn

Okay, bounding box in Vim is gonna be very hard. Nevermind.

Releasing Helium Nuclei

@DJMcMayhem oh nice

Lynn

Even if I manage to do it, it’ll be ≈100 bytes I think.

Sherlock9

@LeakyNun I thought it was something else that was returning filter objects. But I'll go check

Leaky Nun

3:48 PM

@Sherlock9 ok

Lynn

And then I might as well pipe the input through perl :U

Releasing Helium Nuclei

Ive learned yet another thing that I will never use :p

DJMcMayhem

@Lynn Yeah, I wanted to try it but it seems ridiculously hard. It would be nice if you could set horizontal marks

Eᴀsᴛᴇʀʟʏ Iʀᴋ

Why does the SE app not have builtin chat?

11

Quill

because chat is not a priority in comparison to everything else

Releasing Helium Nuclei

3:51 PM

@EᴀsᴛᴇʀʟʏIʀᴋ I asked, nobody replied ;_;

Syxer

@EᴀsᴛᴇʀʟʏIʀᴋ feature-request

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@Quill [citation-needed]

Lynn

My plan was, like…

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@Syxer yes please

Lynn

I got to step two of that. Step three shouldn’t be much harder. Step four is subtly tricky, and step five is trivial.

Syxer

3:53 PM

@Lynn I have no idea what's going on here

DJMcMayhem

I should make a plugin for horizontal marks...

Sherlock9

@LeakyNun actually.tryitonline.net/… o_O

Syxer

@Sherlock9 plot twist: Actually uses XML in some places

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@Lynn explanation?

Syxer

@Syxer Don't worry, I know that's not XML. >.>

Lynn

3:57 PM

Basically, mark the horizontal and vertical positions where #s occur on separate lines, and then fill those out. Then somehow take their outer product I guess??

Eᴀsᴛᴇʀʟʏ Iʀᴋ

Okay?

TimmyD

I have a regex question. How do I replace the "inner" bits up to a certain length? For example, suppose my string is bbbaabbab and I want the inner bb to be replaced with aa. Is there a way to do that?

Lynn

11

Q: Highlight the Bounding Box, Part I: Cartesian Grid

You're given a rectangular grid of the characters . and #, like this: .......... ..#....... ....#..#.. ...#...... .......... Your task is to fill the entire axis-aligned bounding box of the # with further #: .......... ..######.. ..######.. ..######.. .......... The axis-aligned bounding bo...