The Nineteenth Byte - 2016-07-09 (page 2 of 5)

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Dr Green Eggs and Iron Man

6:03 AM

Woah. Evolve went F2P.

anyone know how to do a paragraph break in LaTeX?

two back slashes

is what I'm trying to say

@Downgoat What do you mean by a paragraph break?

a space between two paragraphs?

paragraph break is usually new newlines

\\\\ doesn't work

\smallskip \medskip or \bigskip

6:14 AM

\par?

>_> I tried to type "valid variable" but I typed "valirable"

@Fatalize nope, doesn't work with KaTeX >_> I'm trying to do this for Cheddar docs

the hell is KaTeX

^

there's already a billion different compilers and they make new ones

@Downgoat \vspace[0.5em]

A quick Google search brought this up if none of the above works: sharelatex.com/learn/Paragraphs_and_new_lines

6:16 AM

change the value to your need

@Fatalize ;-; that's not supported either

lmao

@GamrCorps that doesn't look like it's for math mode tho

start a new paragraph and only write ~ in it

Oh a paragraph break in math mode... that is more difficult...

6:18 AM

@GamrCorps yeah :/

wait you're talking about math mode

yeah

just put everything in a \begin{align}\end{align} and you can break lines with \\

> once

not sure it's supported though

6:19 AM

@Fatalize already have that >_> still the same

^^^^

what about a normal paragraph break outside of math mode? Like: \[\] \par \[\]

@GamrCorps can't KaTeX is only math mode

Huh. Well, I'm out of ideas.

@Downgoat \begin{aligned} is supported apparently

then you can break with \\

and align the lines with &

Dr Green Eggs and Iron Man

@Downgoat Yes. Precisely one time. No more beyond that. :)

6:22 AM

@Fatalize yeah, but that only inserts one line break. I try to do \\\\ and it doesn't work :(

Dr Green Eggs and Iron Man

now I just sit near a window.

@DrGreenEggsandIronMan but Iron Man has went outside at least 3 times as they are 3 movies

@Downgoat \begin{aligned}
equation \\
~\\
Equation 2
\end{aligned}

All I could find on Google was this: github.com/Khan/KaTeX/issues/171 which isn't very helpful...

@Fatalize that did it, thanks :)

Dr Green Eggs and Iron Man

6:24 AM

@Downgoat Dammit, that's true. Maybe I'll just have to become DR Seuss instead of Iron Man.

@Downgoat ~ is unbreakable space

huh ok TIL

@DrGreenEggsandIronMan go back to DJ McGoathem pls :3 :3 :3 its best name 10/10

Dr Green Eggs and Iron Man

Or I could be Green Eggs and Goat meat.

...

._.

O_O

;_;

ಠ_ಠ

@DrGreenEggsandIronMan so many emotions at once. Y u do dis

brb ignoring you

Dr Green Eggs and Iron Man

Disbelief --> Emptiness --> Shock --> Sorrow --> Anger

6:27 AM

wait no that's not the right order of 5 stages of grief

Dr Green Eggs and Iron Man

No, that's what your five emojiis were in order.

Also, sorta relevant xkcd:

The Earth's five major mass extinctions were the Posh Extinction, the Sporty Extinction, the Scary Extinction, the Ginger Extinction, and the Baby Extinction.

6:43 AM

@Fatalize nope doesn't support it ;_;

Destructible Watermelon

6:55 AM

________

|;_____;|

7:19 AM

@Downgoat you said it did it...

Dr Green Eggs and Iron Man

@DestructibleWatermelon I love your profile pic. :D

Destructible Watermelon

thank you

I'm nearly going to post my sandbox post for a KotH challenge

@Downgoat And it says in the wiki that aligned is supported...

Destructible Watermelon

7:57 AM

I posted my idea in the sandbox now

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

KotH Chess Warriors. This game will be based on fairy chess, but really could be imagined to be anything else. Submissions will include both: A function that determines the moves of the piece (as in, how the piece can move), called at the start, and a function that determines how it moves each ...

8:24 AM

hi all

user214599

:)

user image

4

user214599

oh.

Destructible Watermelon

8:39 AM

hello

8:57 AM

hi

TùxCräftîñg

g00d morning

Destructible Watermelon

Hi @TùxCräftîñg, remember that mario challenge you made? I have ideas to make it better

TùxCräftîñg

@DestructibleWatermelon what ideas ?

Destructible Watermelon

well, to clarify how exactly Mario can move.

TùxCräftîñg

ok

Destructible Watermelon

9:10 AM

Let's say that mario can ONLY walk right

TùxCräftîñg

ok

Destructible Watermelon

When mario jumps, he only goes one right

This could possibly make it more clear, and perhaps easier to implement

there would still be some challenges in implementing. For example: There is a flat ground for start, a big platform above, and the end below the platform. the program would have to make sure it checks both, and not just the top of the platform.

I think that could make for a good challenge

all the examples you made already follow the rules for what i have stated

could i try making an edit?

TùxCräftîñg

@DestructibleWatermelon i have already edited, but if you can clarify more, edit it

Destructible Watermelon

kk, I will start working on it

I would say that it seems like you have a pretty good challenge idea there, either way

Ohh fibonacci time!

Destructible Watermelon

9:35 AM

tux crafting, it seems as though Mario can only jump 4 high

@TùxCräftîñg

TùxCräftîñg

yes

Destructible Watermelon

Ok, should I make it so he can jump 5, or only 4?

TùxCräftîñg

he can only jump 4

Destructible Watermelon

ok then

TùxCräftîñg

the source code of Apollo 11 AGC is in public domain :D

Destructible Watermelon

9:40 AM

I think that I might have a good edit almost done, but I'm not sure

@DestructibleWatermelon if you submit the edit, I'll have a look

Destructible Watermelon

kk

I'm not entirely sure my edit is going to make it good enough, but maybe it will be a step in the right direction

@MartinEnder submitted

@DestructibleWatermelon the edit clarifies most things but it made the challenge substantially more difficult. was that your intention?

Destructible Watermelon

how so was it more difficult?

in the original challenge the = formed a single connected path that could never go left

Destructible Watermelon

9:53 AM

oh

well then.

if you allow arbitrary positioning of =, S and E that turns it into a pretty tricky path-finding problem

Destructible Watermelon

well then

I will correct it

@TùxCräftîñg what's your opinion on the edit?

TùxCräftîñg

it's a good edit

Destructible Watermelon

I maybe should have looked a bit better, should I correct it?

9:56 AM

@DestructibleWatermelon I mean if TuxCrafting doesn't mind, then it's a fine challenge now. Just quite different from the original.

in its current form it definitely needs more test cases though.

Destructible Watermelon

ok then

My opinion on how it would be solved currently though is this:

for each position, make a list of all possible next positions

follow the first option

TùxCräftîñg

basicly pathfinding

Destructible Watermelon

do that until a dead end it met, then evaluate all the options in the furthest branch. If the entire branch is a dead end, step back evaluate the other options, repeat

when all options are exhausted, output false, if you find it, output true

yeah, that's basic pathfinding. the original challenge could be solved much more easily (in a greedy manner)

Destructible Watermelon

in the original challenge, all you would have to do is check if Mario can make the next jump. In this one, you have to check if Mario SHOULD make the jump

10:02 AM

yes, and in the current one, mario has to walk left potentially (which isn't currently covered by the test cases though)

TùxCräftîñg

this version is more interesting that the first

but also more complex

Destructible Watermelon

actually, I stated that mario cannot move back/left

@TùxCräftîñg I'm not so sure about that. we already have quite a lot of challenges that require basic pathfinding on a grid. the main difference is which cells can be reached from the current one.

the basic one seems like the more unique challenge.

TùxCräftîñg

ok

Destructible Watermelon

Well, I could adjust it to the proper form.

also, is the second to last example a valid input?

10:03 AM

that said, I don't see any problem with posting both versions

(although in that case I'd make the pathfinding one as general as possible by allowing mario to move left as well)

Destructible Watermelon

I will review my edit

Well, actually, a lot of my edit was based on the fact i didn't realise it was a continuous path

I think that this may be a fun challenge, when done

TùxCräftîñg

#define IF(c, g) if (c) goto g
#define ELSE(g) else goto g

#include <stdio.h>

int main() {
    int i = 10;
    w0start:
    IF(!i, w0end);
    printf("%d\n", i--);
    IF(i, w0start);
    w0end:
    return 0;
}

._.

Destructible Watermelon

@TùxCräftîñg I need clarification though. is the second to last example valid

TùxCräftîñg

10:18 AM

this ?

---------
 =
 =   E
S=   =
==   =
 =   =
 =====
---------

Destructible Watermelon

yeo

yep

TùxCräftîñg

yes it's valid

Destructible Watermelon

is it valid?

ok then

Um, is it valid if the top part goes backwards

I think it's not, but just to be sure

TùxCräftîñg

no, it's not valid

Destructible Watermelon

ok, good

---------
 =
 =   E
S=   =
==   ==
 =   =
 =====
---------

is that valid

yes it should be

TùxCräftîñg

10:23 AM

yes

Destructible Watermelon

let me try another example

---------
 =
 =   E
S=   ===
==   =
 =   ==
 =====
---------

is it valid

TùxCräftîñg

yes

Destructible Watermelon

if we visualise this as a line that goes in one direction, it would have to go left

/back

TùxCräftîñg

i think you should create your own challenge based on this

Destructible Watermelon

to be honest, it's a little bit unclear what the limits are for valid and invalid

10:37 AM

from the original challenge I had assumed all of those were invalid. basically, the = form a path starting underneath the S that can either go right, down or up, and isn't going to touch or overlap itself

that is fairly clear to specify and doesn't require dozens of test cases to cover all weird edge cases

Destructible Watermelon

I think perhaps

---------
 =
 =   E
S=   ===
==   =
 =   ==
 =====
---------

should be invalid

for consistency. Is this a good idea @TùxCräftîñg?

TùxCräftîñg

what is a good idea ?

Destructible Watermelon

Making that example invalid

TùxCräftîñg

yes, this example is invalid

Destructible Watermelon

Ok. so, the rules on how it works:

There is one origin point.

from this point, and any other point, the path may go one up, one down, or one right. It may not go one left. It may intersect itself

TùxCräftîñg

10:43 AM

yes

Destructible Watermelon

ok, I'm nearly ready to make a new edit

Ok, I made the new edit. Is it good?

TùxCräftîñg

i think this is good

Destructible Watermelon

@MartinEnder I have made the appropriate corrections

is it a bad sign that noone has commented on my sandbox submission yet?

LegionMammal978

11:02 AM

@zʏᴀʙiɴ101 It seems to be doing that now every several hours or so

@LegionMammal978 D:

TùxCräftîñg

11:22 AM

i am back

v.ht/SPAGHETTI

Destructible Watermelon

hi

TùxCräftîñg

hi

Hey everyone :) I want to make people implement a more complex version of my formula satisfieability challenge. I don't think this can be called "code-golf" anymore then because of the implied complexity. What would be the right category?

Could you link your challenge?

@flawr the old one and the new one will basically replace "variables" with "(quantified) predicates of terms of variables"

(I didn't write the new one down yet)

11:34 AM

I want to make a simple application (with nice GUI) which takes in two numbers and returns their sum. Under which platform is this the easiest?

@JesterTran You mean their sum?

@flawr yeah

TùxCräftîñg

@JesterTran platform ? library or OS ?

Probably javascript then with html.

Sorry, I forgot to say there must exist an executable to open the app

TùxCräftîñg

11:35 AM

use a library like QT or GTK+ then

@TùxCräftîñg how about for OS?

TùxCräftîñg

you can cross-compile

@JesterTran That's just a few additional lines if you want to use python for your executable.

TùxCräftîñg

he have sayed a executable

so i think he want a stand-alone executable

@SEJPM What kind of winning criterion do you think is suitable?

@TùxCräftîñg an executable to open the app

11:38 AM

@TùxCräftîñg oh cool, do you recommend it for a beginner with some knowledge of programming?

TùxCräftîñg

first, try to create a application for your current OS

OS X

or windows

idk whcih one to pick

@flawr I can only think of shortest length, but OTOH I don't really know the usual winning criteria besides shortest length here :/

Destructible Watermelon

@MartinEnder, is the Mario navigation question clear enough to be unheld now, or what needs to be done to unhold it?

@JesterTran formlayout is a python framework based on Qt for small stuff like it seems you inted to do

TùxCräftîñg

11:40 AM

OSX is better for programming (XCode, the ide is in the installation cd)

@JesterTran pypi.python.org/pypi/formlayout

@flawr Wow, that may be a great start for me. Thanks

@TùxCräftîñg I have that installed

@Dennis What are the requirements to get a language on TIO?

user image

@SEJPM You might want to skim through the tags to see if you can find something that fits=)

@flawr is it generally frowned upon to re-post a specific challenge once as code-golf and once as fastest-code ?

Destructible Watermelon

11:56 AM

what is that image?

TùxCräftîñg

it's Donald Duck

washing his car

.__.

Destructible Watermelon

but

why?

That feeling when you beat someone at code golf using the same language >:)

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Evaluate an expression of ternary operators Consider the context-free grammar over {0, 1, ?, :} defined by S → 0 | 1 | S?S:S . Given a string generated by S, parse it as an expression where ?: is right-associative (a?b:c?d:e?f:g means a?b:(c?d:(e?f:g))) and evaluate it with the following semanti...

TùxCräftîñg

idk .____________.

Destructible Watermelon

the sandbox bot's 'about' text though

12:07 PM

@Fatalize It must be safe to run on the server (no arbitrary code execution, file access, internet access, etc.) and have an compiler/interpreter for Ubuntu. Depending on the language you implemented it in, I might also need some help with the setup.

So no file writing?

Destructible Watermelon

No one has noticed my sandbox post yet ._.

TùxCräftîñg

@DestructibleWatermelon link?

Destructible Watermelon

How do i do links to specific answers?

figured it out

0

A: Sandbox for Proposed Challenges

king-of-the-hill KotH Chess Warriors. This game will be based on fairy chess, but really could be imagined to be anything else. Submissions will include both: A function that determines the moves of the piece (as in, how the piece can move), called at the start, and a function that determines ...

@Dennis Also, I assume the "Input/Arguments/Output" format of TIO is fixed and the same for all languages?

12:28 PM

Searching emergence with apgsearch offline version.

Currently at 3000 soups, seed AA, haul size 10000.

3400 soups!

3600 soups!

TùxCräftîñg

._.

Half way!

@TùxCräftîñg -._(._.)_.-

TùxCräftîñg

who have putted the backspace key at the top of the enter key ._.

@TùxCräftîñg about your shwa pseudo keyboard:

TùxCräftîñg

yes?

12:34 PM

You would do a rectangle skewed a bit, or with the peak?

@LegionMammal978 Doing a search with apgsearch offline version.

LegionMammal978

@SuperJedi224 Got a couple of 26-cells

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

It's time to unify! code-golf logic math Introduction Wouldn't it be awesome if they whole world would be united and there would be no conflicts and disputes? Now while you can't unify nations, you certainly can unify expressions to resolve their unknown relation and conflicts. Your mission ...

LegionMammal978

@zʏᴀʙiɴ101 ^^

(The site is back up now)

TùxCräftîñg

@zʏᴀʙiɴ101 idk -._(._.)_.-

@LegionMammal978 Ikr.

user image

LegionMammal978

12:36 PM

@zʏᴀʙiɴ101 Which rule?

@TùxCräftîñg I meant, choose one of the shapes above ^

@LegionMammal978 Regular B3/S23.

Seed AA, haul size 10000 soups.

TùxCräftîñg

the shape at the bottom seem more natural

LegionMammal978

I've been working on B45/S12

@LegionMammal978 On an online version?

apgmera, eh?

8000 soups!

LegionMammal978

@zʏᴀʙiɴ101 yep, running on half my i7

12:39 PM

I run the offline one from conwaylife.com/forums/viewtopic.php?f=7&t=1443#p13121

Thousand left!

TùxCräftîñg

the shape at the bottom seem more natural

S**** DLINK ROUTER FKEUDIHJILSIUKYHUJIOHJIO HDIJOIO

@TùxCräftîñg Okay, so with a peak?

LegionMammal978

@zʏᴀʙiɴ101 I'm running 1Msoup per haul, takes about a minute per haul

TùxCräftîñg

yes

Home stretch!

LegionMammal978

12:42 PM

Core 0:         +77.0°C  (high = +80.0°C, crit = +98.0°C)
Core 1:         +81.0°C  (high = +80.0°C, crit = +98.0°C)
Core 2:         +78.0°C  (high = +80.0°C, crit = +98.0°C)
Core 3:         +73.0°C  (high = +80.0°C, crit = +98.0°C)

Getting a bit toasty in there

Finish!

TùxCräftîñg

._.

LegionMammal978

\o/

^ Little animated comment there

@LegionMammal978 I ran one haul with 10000 soups, on my old PC it takes (with 10 soups per second) around 15 minutes (sans the time to parse the emergence).

TùxCräftîñg

what is apgsearch ?

LegionMammal978

12:44 PM

@zʏᴀʙiɴ101 Mine wouldn't be a half-bad gaming PC, if only it had a reasonable graphics card

@TùxCräftîñg The Ash Pattern Generator (or A. P. Goucher search), a high-performance soup searcher.

TùxCräftîñg

cant download with FDM from sourceforge .___________________________.

ConwayLife forum thread for apgsearch 0, downloads for apgsearch 1, apgnano and apgmera.

@TùxCräftîñg You're probably looking in the wrong place. :d

See ^^.

TùxCräftîñg

i am downloading a thing from SF and i cant download with FDM :(

Ah k :)

TùxCräftîñg

12:48 PM

apgmera need python 2 ._________________________________________________________________.

LegionMammal978

But yeah, apgmera currently has a bug causing it to not play nice with newer GCC

(I found an easy fix and submitted a bug report)

@TùxCräftîñg It does, for recompiling itself. A bit of a self-changing program.

I don't know if apgnano needs Python 2.

LegionMammal978

> and the suffix '-mera' refers to the chimeric nature of the program (which recompiles itself whenever a different rule is specified).

TùxCräftîñg

fatal error: omp.h: no such file or directory

._.

@TùxCräftîñg You need OpenMP for that.

TùxCräftîñg

12:52 PM

where i can download omp ._.

@TùxCräftîñg -._(._.)_.-

Also, I got back my simple search shortcut.

I can enter apg, space, followed by the apg code of an object, to look it up in B3/S23.

Tutorial for Firefox:

1) Open catagolue.appspot.com/object

2) Right click the apgcode text field.

3) Choose "Add Short Name for this Search."

4) Enter a name for the "bookmark" in the "Name" field, and apg in the "Short Name" field.

5) Save.

Bam done.

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@TùxCräftîñg WAT

python2 is best python

TùxCräftîñg

python3 is the best

Eᴀsᴛᴇʀʟʏ Iʀᴋ

WAT

python2 is best python

TùxCräftîñg

no it's py3K

Eᴀsᴛᴇʀʟʏ Iʀᴋ

12:59 PM

WAT

python2 is best python

TùxCräftîñg

you dont understand ._. python3 is the best

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@RohanJhunjhunwala sorry, left and that didn't ping me. My name is weird.

But yeah, almost anybody could help you.

I would have if I didn't had to leave.

@DrGreenEggsandIronMan Portal 2 test-chamber-creator confirms "Portalable", not "Portable".

¯\_(ツ)_/¯

TùxCräftîñg

apgnano is compiling \o/

apgnano compiling has failed /o\

Try apgsearch 1, or continue trying to do apgnano?

TùxCräftîñg

error: libgomp.spec: no such file or directory ._______________________________________________________________________________________.

i give up ._.

i have been lost on wikipedia and found this:
> On June 13, 2016, Microsoft announced it will acquire LinkedIn for $26.2 billion, a deal expected to be completed by the end of 2016.

.____________________________________________.____________________________________________.

Eᴀsᴛᴇʀʟʏ Iʀᴋ

1:28 PM

@TùxCräftîñg i do understand how wrong you are?

TùxCräftîñg

i am not wrong. you are wrong by saying py2 is the best

because py3 is the best

Eᴀsᴛᴇʀʟʏ Iʀᴋ

hahaha you're not funny

TùxCräftîñg

i am not funny i'm telling the truth.

Eᴀsᴛᴇʀʟʏ Iʀᴋ

you got the first part right

TùxCräftîñg

and the second part is also right

Eᴀsᴛᴇʀʟʏ Iʀᴋ

1:34 PM

i don't think so

TùxCräftîñg

even jelly is written in py3

Eᴀsᴛᴇʀʟʏ Iʀᴋ

yes

jelly is boring IMO

TùxCräftîñg

05AB1E too is writen in py3

Eᴀsᴛᴇʀʟʏ Iʀᴋ

that also doesn't really matter

what's so great about 3?

TùxCräftîñg

3 is far simpler

Eᴀsᴛᴇʀʟʏ Iʀᴋ

1:35 PM

in what way?

TùxCräftîñg

xrange and range in py2, only range in py 3

Eᴀsᴛᴇʀʟʏ Iʀᴋ

It's practically the same except for a couple new/old functions add/remov ed

TùxCräftîñg

print and exec are now functions

Eᴀsᴛᴇʀʟʏ Iʀᴋ

> far

yes

@TùxCräftîñg see above

The only way to settle this is with a contest.

1:37 PM

I prefer py2 but I wrote pyke in py3 because it has function annotations

Eᴀsᴛᴇʀʟʏ Iʀᴋ

true

like def partition(self, string:str, sep:str):

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@trichoplax give a challange?

Are you trying to prove it's faster, terser, more memory efficient, readable, writable, something else...?

more awesome

Eᴀsᴛᴇʀʟʏ Iʀᴋ

1:38 PM

@trichoplax better in general

yes that's objective

Eᴀsᴛᴇʀʟʏ Iʀᴋ

yeah

OK that's easy then. You each write a program in your chosen language, and then whichever one is better in general wins

Eᴀsᴛᴇʀʟʏ Iʀᴋ

okay

TùxCräftîñg

what kind of program ?

1:39 PM

Now we just need to define that objectively...

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@TùxCräftîñg I suggest a golfing contest. You pick a easyish challenge on main, and we both try to solve it.

@SEJPM It is probably going to be closed as a dupe, so yes, probably.

Eᴀsᴛᴇʀʟʏ Iʀᴋ

easyish means not add 2 numbers, but not something really hard.

TùxCräftîñg

codegolf.stackexchange.com/questions/84841/… seem good

Eᴀsᴛᴇʀʟʏ Iʀᴋ

sure

not my first choice, but that works

@TùxCräftîñg 321goalready

TùxCräftîñg

1:43 PM

i have already started my program :c

Eᴀsᴛᴇʀʟʏ Iʀᴋ

k

doesn't matter

was mostly a joke

Looking at my own challenges, python 2 and 3 seem to be fairly balanced against each other, with 3 slightly ahead for non-golf challenges

Eᴀsᴛᴇʀʟʏ Iʀᴋ

yeah

@TùxCräftîñg you done?

>_> my solution is identical no matter which version

so probably a tie

TùxCräftîñg

matchine consecutives chars is harder than i thought .________________.

Eᴀsᴛᴇʀʟʏ Iʀᴋ

try itertools combinations

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Jul '169

The Nineteenth Byte

The Nineteenth Byte: General discussion for codegolf.stackexc...

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