The Nineteenth Byte

Alex A.

03:00

Oh hey @Geobits is here and I don't see any conspicuous dead bodies.

Geobits

You're not looking hard enough.

Alex A.

I'm choosing not to look too hard, just in case.

Geobits

Good thinking :P

Downgoat

@AlexA. chown to who?

Phrancis

who is chown?

Downgoat

03:02

@Phrancis He is a guy who likes to chow ns, poor n.

Alex A.

chown $(whoami) /path/to/whatever

Downgoat

oh ,yeah

Helka Homba

@AlexA. Care? Sure. Think it will revolutionize entertainment? No. Why? People like to be lazy

Geobits

@AlexA. -1 not enough jquery

Downgoat

;_;

Phrancis

03:03

I think it failed ( ͡° ͜ʖ ͡°)

Alex A.

@Geobits Btw are you quitting cold turkey or do you have patches or gum or whatever?

Downgoat

@Phrancis orly?

Alex A.

s/y/p/

Helka Homba

@Downgoat 😢😣 (testing mobile crying faces)

Geobits

@AlexA. Cold turkey is the best turkey.

Phrancis

03:05

Is there a chat/FF extension/plugin/thing to store frequently used strings?

Downgoat

@Phrancis are you on mac?

Phrancis

No Windows ATM

Downgoat

then, none that I know of

Phrancis

I have a Mac but don't use it much anymore since it's old

Alex A.

Old Mac is better than no Mac

Phrancis

03:06

I mean like 2009 old

Helka Homba

Just vookmark a google doc

Downgoat

$ chmod +x ./dist/bin/cpm
before_script.2
$ chown $(whoami) ./dist/bin/cpm
$ npm test
> sudo ./dist/bin/cpm install math
./dist/bin/cpm: 7: ./dist/bin/cpm: : Permission denied

FU— ;________;

Helka Homba

*b

Phrancis

But yeah, <3 Macs but they are expensive and I didn't care for the current offerings so I bought an MSI instead, recently

Downgoat

@Phrancis 2009 isn't that old

Alex A.

03:07

@Phrancis That's not bad. My girlfriend still has her 2009 MacBook Pro and it's a little sluggish but still runs fine.

Downgoat

My Mac Mini I use to host my stuff is 2009

Phrancis

I guess Macs age well, mine is still working fine, just a little slow with newer software versions

Mars Ultor

uses a laptop with a Celeron

Any Macbook > a laptop with a Celeron

Phrancis

brb ignoring @MarsUltor because he mentioned Celerons

:D

Geobits

@MarsUltor I just got me a sweet new RISC chip :P

Helka Homba

03:09

did anyone own a computer before their parents did?

Phrancis

My dad was fairly early adopter (of consumer computers) so not me

Still have nightmares about that Tandy

Geobits

Yea, both my parents worked on tech stuff, so not me either.

Mars Ultor

My mom did programming at university, so not me

Geobits

@Phrancis oh, I had a Tandy 1000. You?

Helka Homba

Similar boat here

Phrancis

03:10

@Geobits Oh gods, ... that's the one I think

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Challenge Create a factorial tree from a number. A factorial tree will take a number > 1, n, and find 2 numbers that multiply together to equal n that are greater than 1. Then, it will repeat for the factorials until every section reaches a number that does. Then it will output the last numbers....

Geobits

It was a beast, no doubt.

Phrancis

Geobits

When will I learn not to click sandbox links on mobile? It never ends well.

Phrancis

Very similar to that, though the "box" was significantly bigger

Eᴀsᴛᴇʀʟʏ Iʀᴋ

03:12

@Phrancis hey, my grandad still has that in his garage!

idk if it still works though

and he has an apple 2e also.

Geobits

@Phrancis yea, mine was bigger than that too.

Phrancis

That OS sucked balls

Helka Homba

Did anyone own a computer before one of their grandparents did? (No here)

Eᴀsᴛᴇʀʟʏ Iʀᴋ

no

Phrancis

My grandparents never owned a computer

Geobits

03:13

I didn't live in the same continent as my grandparents, so not sure.

Phrancis

Not sure my remaining one even owns a cell phone, she has a land line

Though the land line phone is digital, so I guess that counts as a computer?

(it also has reallllly big buttons)

Geobits

How old is the car? It's probably more computerized :)

Phrancis

^

Ah the memories of the old, sluggish Tandy, oh and also the printer, you know with the strips with holes in them on the sides of the paper (can't think of the name)... man those were loud, and slow

quartata

Blergh, the IRC server protocol is kinda weird

Geobits

@Phrancis Yea, but you could make the little spring things with the holey edges. Totally worth it.

Phrancis

03:17

@Geobits Oh yeah those were fun

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@Geobits why not?

Geobits

@EᴀsᴛᴇʀʟʏIʀᴋ Lived in Germany for seven of my first ten years.

Eᴀsᴛᴇʀʟʏ Iʀᴋ

cool

Geobits

That's what I thought too ;)

Eᴀsᴛᴇʀʟʏ Iʀᴋ

Did your parents work there?

Geobits

03:21

Yea, military.

Eᴀsᴛᴇʀʟʏ Iʀᴋ

or did you accidentally mail yourself there and had to work your way back?

oh, okay.

@Geobits are you planning to put @Minibits in the military?

Downgoat

$ sudo $(which chmod) 777 ./dist/bin/cpm
$ sudo $(which chown) $(whoami) ./dist/bin/cpm
$ sudo $(which npm) test
> sudo ./dist/bin/cpm install math
./dist/bin/cpm: 7: ./dist/bin/cpm: : Permission denied

>:( wtf travis

Eᴀsᴛᴇʀʟʏ Iʀᴋ

rofl

@Downgoat you should totally drop that and try jQuery

Geobits

"Put" him in? No, he can make his own decisions at that point. I'll give him some pros and cons if he asks.

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@quartata do you play brogue?

Downgoat

03:22

@EᴀsᴛᴇʀʟʏIʀᴋ i tri bu permission denied eror

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@Geobits okay. You said you went into the military, right?

Geobits

Yea, for ten years.

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@Downgoat oh, you no put enough avocad in. put more and tri again

@Geobits okay. Did you like it?

Downgoat

@EᴀsᴛᴇʀʟʏIʀᴋ i put too much avocad an travis eror

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@Phrancis ... you don't?

@Downgoat no use travis use jQuery

Downgoat

03:23

i alread tri

Geobits

@EᴀsᴛᴇʀʟʏIʀᴋ For the most part, yes. There are some shitty aspects, but on the whole it was a net positive.

Eᴀsᴛᴇʀʟʏ Iʀᴋ

cool

@Downgoat tri for thirtee minut?

Downgoat

@EᴀsᴛᴇʀʟʏIʀᴋ yea

Eᴀsᴛᴇʀʟʏ Iʀᴋ

tri fortee

Downgoat

i tri fo nintee

quartata

03:24

@EᴀsᴛᴇʀʟʏIʀᴋ no but I've heard of it

Phrancis

@EᴀsᴛᴇʀʟʏIʀᴋ Maybe I'll need to try one of you all's ~~sorcery~~ languages some day

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@quartata hm

I have a question on gaming se about it.

Geobits

@Phrancis it's a trap

Eᴀsᴛᴇʀʟʏ Iʀᴋ

just wondering if you need moar arqade rep

Downgoat

@Phrancis you should try teascript its great and does all things

its also very easy to use

Eᴀsᴛᴇʀʟʏ Iʀᴋ

03:25

@Downgoat tri thirtee hundwed

Downgoat

@EᴀsᴛᴇʀʟʏIʀᴋ oka thx fo halp

Phrancis

@Downgoat "golfing languages" and "easy to use" don't come to mind in the same thought very often

Eᴀsᴛᴇʀʟʏ Iʀᴋ

try jolf.

Downgoat

jolf has higher learning curve than teascisrpt

Eᴀsᴛᴇʀʟʏ Iʀᴋ

yeah but iz better

@CᴏɴᴏʀO'Bʀɪᴇɴ agrees.

Phrancis

03:27

I thought Clojure was cool, though it's not golfing (and also has lots of Lisp parentheses) but that's about as weird of a language I've tried

I take that back, I've played around with ChucK too

15

Q: Musical Fizzbuzz

I wrote some code using ChucK : Strongly-timed, Concurrent, and On-the-fly Music Programming Language and would like a review. I broke down the logic into a number of classes, all of which are shown below. This is pretty new to me, and I would appreciate any and all constructive criticism. Wha...

I even recorded a video for it

quartata

Racket > Clojure

Phrancis

But Lisps are so beautiful

quartata

Racket is a lisp

Phrancis

Oh

quartata

Clojure barely deserves the lisp name

Geobits

03:30

So very insensitive to speech impediments in here...

Phrancis

But... Clojure is JAVA though:(

Downgoat

@EᴀsᴛᴇʀʟʏIʀᴋ are you saying teascript is bad ;_;

quartata

A street urchin sprung from the unholy love of a declarative and an imperative language

it should be burnt at the stake

Geobits

@Downgoat isn't teascript just weak JavaScript? (honest question)

Downgoat

@Geobits what

@Geobits TeaScript : JavaScript :: Pyth : Python

Geobits

03:32

So you're saying I'm right? ;)

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@Downgoat no

Downgoat

@Geobits ...

quartata

No Jolf : JavaScript :: Pyth : Python

Geobits

I honestly thought teascript was simple replacement-golfing.

quartata

Teascript is very different

Phrancis

03:34

Does Teascript contain more magic per byte of code?

Downgoat

@quartata eh, my point was that TeaScript does compile to JS but syntax is completely changed.

@Phrancis depends. a 2 in teascript == a 2 in JS

Geobits

But does it ==== ?

quartata

but Pyth syntax is Python syntax just without parenthesis or commas

Phrancis

2 =============== 2

Soon we'll need plugins to keep track of how many equal signs to use with JS

Downgoat

@quartata Not really, Pyth is prefix, python is infix

quartata

03:36

@Downgoat lol

Downgoat

@Phrancis eval("2"+$.IS_IT_REALLY_EQUAL_DONT_LIE_TO_ME_JS+"2")

quartata

reversed(map(lambda x: x * 2, input()))

oh yes clearly tacit infix

Downgoat

@quartata I can't tell if sarcasm

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@quartata you should try it, almost as good as nethack.

quartata

Yes that is sarcasm

Downgoat

03:39

I have no idea if you're being sarcastic about that being sarcasm :|

Eᴀsᴛᴇʀʟʏ Iʀᴋ

...

Downgoat

Does anyone here have experience with Travis-CI?

Eᴀsᴛᴇʀʟʏ Iʀᴋ

Other than you? idts

quartata

You know that infix means something liike this right? (input map (x lambda x *2)) reversed

Eᴀsᴛᴇʀʟʏ Iʀᴋ

^

Alex A.

03:41

@Downgoat Yes

Downgoat

@AlexA. :D can you see if you have any idea why this is borked:

19 mins ago, by Downgoat

$ sudo $(which chmod) 777 ./dist/bin/cpm
$ sudo $(which chown) $(whoami) ./dist/bin/cpm
$ sudo $(which npm) test
> sudo ./dist/bin/cpm install math
./dist/bin/cpm: 7: ./dist/bin/cpm: : Permission denied

I 777 CHMODED IT, WHAT MORE DO YOU WANT FROM ME TRAVIS

Alex A.

Uh, why are you doing $(which chmod) to get chmod?

Downgoat

@AlexA. because travis is stupid and will say "chmod: Command not found"

Alex A.

If chmod doesn't work, which chmod shouldn't either

quartata

But.... which only shows things in your path...

Alex A.

03:43

^ Exactly.

quartata

also what is on line 7

Alex A.

which searches your path

Downgoat

A travis member said to do that

and it actually fixes it

at least the command not found error

Alex A.

That's really bizarre

Downgoat

I have no idea why. Travis is confusing as f*ck

Alex A.

03:44

If you were talking to a Travis member about it, why don't you ask them about the permission error?

Downgoat

I was reading an existing thread

quartata

what is on line 7 of cpm

Downgoat

lemme paste cpm:

#!/bin/sh

base=`dirname "$0"`
CHEDDAR_EXE="$base/cpm-cli.js"
NODE_EXE=`which node`

"$NODE_EXE" "$CHEDDAR_EXE" "$@"

quartata

check the permissions on cpm cli js

Downgoat

ok, lemme see if chmod 777ing that works

quartata

03:47

just do ls -l

Geobits

Try chmod 888 instead ;)

Downgoat

it still dies ;_;

Alex A.

¯\_(ツ)_/¯ Ask Travis support

That's what they're there for

Downgoat

where? how?

Alex A.

Click Help on their site?

How were you talking to one of them before?

quartata

03:53

do ls -l pls

Downgoat

ok

@quartata travis-ci.org/cheddar-lang/Cheesecloth/builds/128455449#L179

quartata

...

Downgoat

@quartata did I do something stupid?

quartata

I meant for you to show me the output of ls -l

Downgoat

yeah, I did?

$ ls -l ./dist/bin
total 8
-rwxrwxrwx 1 travis travis  117 May  7 03:54 cpm
-rwxrwxrwx 1 travis travis 1463 May  7 03:55 cpm-cli.js

quartata

04:00

Oh. I thought you were just showing me that the build failed

uh maybe ls -l $(which node)

New Main Posts

0

Q: Jordan Decomposition

important note: Because this challenge only applies to square matrices, any time I use the term "matrix", it is assumed that I am referring to a square matrix. I am leaving off the "square" description for brevity's sake. Background Many matrix-related operations, such as computing the determin...

code-golf math matrix polynomials

quartata

oh wait a second, I know the problem I think

Wait, nevermind.

Phrancis

@NewMainPosts complicated maths to me

Downgoat

^

Anonymous

@Phrancis It's actually quite simple

Downgoat

04:11

Phrancis

lol

Anonymous

Subtract λ from each diagonal element of A, compute determinant, set equal to 0, solve for λ. Boom, eigenvalues.

Downgoat

ugh greek letters

Phrancis

Who is λ?

Anonymous

Some variable that means "eigenvalue" in the context of matrixes

quartata

04:12

lambda is often used as a symbol for eigenvalue

ninjad

Phrancis

Disclaimer: I don't understand matrix math, or much math, for that matter

quartata

@Mego are we allowed to use determinant builtins

Phrancis

(not asking for a lesson either atm, already had one today:)

Anonymous

So for A = [[2,3],[5,1]], you'd get (A-λI) = [[2-λ,3],[5,1-λ]]. Determinant is (2-λ)(1-λ)-15. Set equal to 0, solve for λ.

Anonymous

@quartata Yes

Anonymous

04:14

I don't consider determinant builtins to trivialize the challenge, since computing the eigenvalues is only part of it

quartata

might do a matlab solution later. too busy trying to figure out how to get this stupid irc thing working

Anonymous

Goal for myself: get the inquisitive badge by posting a challenge every day for the next 7 days

New Main Posts

0

Q: Build a Factor Tree

Challenge Create a factor tree from a number. A factor tree will take a number > 1, n, and find 2 numbers > 1 that multiply together to equal n. Then, it will repeat for the factors until every section reaches a number that does not have any factors. The program should output the most optimal ...

code-golf math ascii-art

Downgoat

@Quill how can I do something like this in grunt: grunt.registerTask('install', ['task1', 'task2']); but when grunt install is called. I want to check if some variable is true and if it is run another task. Can I do that?

Alex A.

04:30

@Mego I have a Mathematica solution that's almost there, I just need to figure out how to get those damn ones for the multiplicities. >:/

Quill

Probably

You could just add a task alongside task 1 and 2 that can call another task

Anonymous

@AlexA. Does Mathematica have builtins for Jordan blocks and block-diagonal matrices?

Alex A.

Almost surely

Downgoat

@Quill yeah, just figured that ou

Alex A.

But I'm not using them

Aren't they banned?

Anonymous

04:37

Only Jordan decomposition is banned

Alex A.

Oh

Anonymous

Using a builtin that constructs a Jordan block from an eigenvalue and its algebraic multiplicity, or one that outputs a block-diagonal matrix from a list of blocks, is not banned

Downgoat

$ sudo cpm juic avocad
Attempting to install avocad...
Attempting to install from github.com/cheddar-lang/cheddar-libs/trunk/avocad/config.ini...

Successfully located package:
avocad, A avocado juicing library for Cheddar.

Anonymous

My Sage solution for this one (which I'm not posting for a while) is really short because Sage has those builtins :)

Downgoat

i can juic avocad wit cpm!

Alex A.

04:38

But eigenvalue built-ins are banned though

> A avocado

An avocado, you mean?

Downgoat

@AlexA. no, I meant "a avocad"

brb fixing

Quill

-1 incorrect package description

Downgoat

github.com/cheddar-lang/cheddar-libs/blob/master/avocad/…

Anonymous

@AlexA. Yes, but computing the eigenvalues and their multiplicities is as easy as finding the roots of the characteristic polynomial

Downgoat

@Quill what version of OS X are you using?

Alex A.

04:41

@Mego Which is nontrivial for languages without symbolic algebra

Anonymous

@AlexA. Sucks to suck :P

Alex A.

DiagonalMatrix[Solve[Det[A-L*IdentityMatrix[Dimensions[A]]==0,L][[All,1,2]]]

._.

That's just to get the main diagonal with eigenvalues

I haven't even gotten multiplicities yet because using Mathematica is like slamming your face into a fence repeatedly.

Anonymous

I've got 79 bytes in Sage

Anonymous

:P

Alex A.

ಠ_ಠ

Anonymous

04:45

The main reason why it's so short in Sage is 1) polynomial.roots() is a thing, and 2) polynomial.roots() returns a list of (root,multiplicity) tuples

Anonymous

Sage is great and does all things

Alex A.

Sage is okay. I mean, it can only be so good being based on Python. ;P

Anonymous

What you meant to say is, "It must be so great because it is based on Python"

Alex A.

That is not what I meant to say

Anonymous

The temptation to make a golfier version of Sage is strong... There's so many long function names

Alex A.

04:48

Seriously v3

Anonymous

I've been toying with the idea of making a math-based fork of Seriously (like M is a math-based fork of Jelly)

Anonymous

And building it on Sage

Quill

@Downgoat el captain

Downgoat

@Quill oh D:

Quill

Why?

Anonymous

04:49

But a math-based fork of Seriously would just be Seriously (minus a few string functions)

Downgoat

@Quill system integrity protection

Anonymous

Anyhoo, back to Path of Exile 2-week league

Anonymous

I hope to see oodles of rep when I come back

Alex A.

I only have poodles

and noodles

Downgoat

Does anyone have any idea on how to golf this:

if [ ! -f a ]; then
    echo "foo" >> b
else
    echo "foo" >> a
fi

Quill

04:54

Ternary

Downgoat

~~how ternary bash~~ this isn't google :|

@Quill can I do echo "foo" >> (a || b)?

Alex A.

This has a good explanation

Downgoat

@AlexA. i know. I googled it

Alex A.

( ͡° ͜ʖ ͡°)

4

my goodness that's large

Downgoat

@AlexA. ( ͡° ͜ʖ ͡°)

> can I do echo "foo" >> (a || b)

no one? :(

Alex A.

04:58

Try it in your terminal and see if it works

Quill

I haven't done bash in a long time ;-;

Downgoat

anyone know why this doesn't seem to work?: echo [ -f foo ]

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