The Nineteenth Byte

Григорий Перельман

05:01

@ATaco feature-request: $ as shorthand for $1

ATaco

@ГригорийПерельман That'd be, a pain to implement.

Григорий Перельман

Replace (?<!\\)\$(?=\D) with $1 in the replacement part of pairs.

Mistah Figgins

Can someone go over java lambda expressions? I'm unfamiliar with them and I've seen them often in golfing

Jan Dvorak

please clarify your question

Mistah Figgins

What is the syntax behind lambda expressions

Григорий Перельман

05:08

arg->expression

ATaco

@ГригорийПерельман Does not support named groups.

Григорий Перельман

Oh right, forgot about those.

Are those just $NAME?

Mistah Figgins

How do I test lambda expressions?

Григорий Перельман

@MistahFiggins tio.run/nexus/…

You can really tell they weren't designed to be called directly.

Mistah Figgins

Yeah

(In the context of PPCG) if I want to use one inside the other (recursively), can I define a lambda expression inside a lambda expression, or do I have to name it outside?

Григорий Перельман

05:18

Recursively calling lambdas? That's some spooky stuff m8.

How do you expect that to work?

Yeah you have to name it if you wan't that. But at that point you also have to include the type of the Lambda in your byte count, at which point you might as well use a normal function.

Mistah Figgins

¯\_(ツ)_/¯

Yeah, I guess

I don't need any visibility keyword, do I? (e.g. public)

Григорий Перельман

Actually, no, just tested, even giving it a names gives error: variable f might not have been initialized

Mistah Figgins

a(parameters){code}

DLosc

@ГригорийПерельман Works just fine in Pip--the local variable f is a reference to the current function, so calling f recurses.

Григорий Перельман

@MistahFiggins That's an example of a normal, non-lambda function, yes.

DLosc

05:22

(Though I guess it's debatable whether {} functions in Pip should be called lambdas or anonymous functions--is there officially a distinction?)

Григорий Перельман

@DLosc Some languages are awesome and have recursive Lambda calls. Java is not one of them.

DLosc

s/ and have recursive Lambda calls// :P

ATaco

TMK, Lambdas are usually only one expression.

Mistah Figgins

@ГригорийПерельман :(

Григорий Перельман

Slightly off-topic, if the term for proper python code is 'Pythonic', what's an equivalent term for Java?

ATaco

05:25

Java-like

DLosc

CodeThatFollowsJavaCodingStyle

Григорий Перельман

That's boring. Using lambdas at all isn't javanic.

(That's my term, and I'm sticking with it)

in talk.tryitonline.net, 24 mins ago, by Dennis

i'll add it to the list.

ReRegex confirmed for TIO btw

(Apparantly said list has like 5 things on it tho)

Mistah Figgins

I think he's really busy rn

Григорий Перельман

Probably.

DLosc

Anybody in here know Mathematica?

Arjun

05:35

Could anyone please review this :- codegolf.stackexchange.com/review/suggested-edits/38099

DLosc

@Arjun It looks like a complete rewrite to me. I don't know exactly what the policy is, but my instinct is to say that's too big of an edit from someone who's not the OP.

Mistah Figgins

^

Григорий Перельман

@DLosc I might know enough to help you out until Martin shows up.

DLosc

@Arjun One alternative would be to copy what you've written into a Gist or Pastebin, and add a comment to the OP asking them to review it and see if they want to integrate it into the question.

Григорий Перельман

@Arjun You might want to ping the original author (@DownChristopher) and ask for him to review it himself.

@DLosc What's your problem?

ATaco

05:41

Alright, I wrote code that successfully parses 1+1, 1*1, and 1e1

Григорий Перельман

Neat

@ATaco how do you do input in ReRegex?

DLosc

@ГригорийПерельман How does one call a function (previously defined with f@m_:=) with a list of strings as argument? I tried f[{"...",".#.","..."}] and got some errors. (Running code here.)

Григорий Перельман

@DLosc That's a private notebook, I can't see what's inside. Can you copy the relevant code here?

ATaco

Currently, input is part of the code, See: ///

The Last Line of the code is the input.

DLosc

@ГригорийПерельман Basically, I'm trying to test this answer.

Григорий Перельман

05:44

@ATaco Ok. Would Hello World just look like x//Hello, World!

DLosc

Which says it's "a function that takes and returns a list of strings."

ATaco

///Hello, World! Is more correct.

Mistah Figgins

@ГригорийПерельман Couldn't it just be Hello, World!

Григорий Перельман

I don't actually know.

Mistah Figgins

or does there have to be a /// somewhere?

Григорий Перельман

05:46

@ATaco Why is that?

ATaco

That Also works...

But it's so much more boring.

A / at the start of the code is trimmed (It just looks nice in some cases), and any pair at all is appreciated, so ///Hello, World!.

x//Hello, World! is slightly frowned upon, as it will remove all xs.

Григорий Перельман

@DLosc What appears to be happening is that the function is attempting to get a char from a string in the same way you do it for an array, which is not a thing you can do.

DLosc

Huh. So the answer is invalid?

Григорий Перельман

I think what the solution author want you to do is give it a list of 1 character string lists.

@ATaco Ok, I see.

DLosc

Yeah, except they gave a separate (shorter) solution for "If we're allowed to use arrays of characters."

Григорий Перельман

05:51

ಠ_ಠ

Pretty sure the answer is invalid then.

Ask them to provide a an example of usage.

Arjun

@DLosc If I someone edits his closed question, then does it get directly reopened or follows the same procedure of peer reviewing?

DLosc

@ГригорийПерельман Yeah, I'll do that.

@Arjun I doubt that it gets directly reopened. It needs reopen votes for that.

New Main Posts

0

Q: Need an algorithm or exact code

Given a= 6, b = 13,(for example) How to change b= 6. a = 13 without third integer? I need an algorithm or code.

c#

Arjun

Okay. So all I have to do is simply ask him to view the proposed edit, edit the question accordingly if he thinks that doing so will be right. He will edit it. The edit will go through the same procedure, but this time there won't be any issues regarding the drastic amount of change made (Since OP can edit his question as much as he likes). Do I get it right?

@DLosc

Destructible Lemon

Survey: which are you: Neutral, Chaotic, or Lawful?

Григорий Перельман

06:00

@DestructibleLemon True Good

Jan Dvorak

@ГригорийПерельман That's not a D&D alignment

betseg

@DestructibleLemon chaotic evil. Muhahahahaha.

Григорий Перельман

@Arjun Yes, a challenge author can insta-accept a suggested edit.

@JanDvorak No one says Neutral Good though.

Destructible Lemon

we aren't surveying good and evil

Jan Dvorak

I do

Destructible Lemon

06:01

lawful, chaotic or neutral

Григорий Перельман

Do you say Neutral Neutral?

Jan Dvorak

Chaotic then. Chaotic good, I must say.

@ГригорийПерельман the middle column is neutral good, true neutral, neutral evil

Григорий Перельман

I like consistensy.

Arjun

Ahhh... Someone just approved it. However it still says [closed] on the question. Why so?

Григорий Перельман

@Arjun Because it doesn't have 5 reopen votes yet?

Mistah Figgins

06:03

@DestructibleLemon Strawpoll?

Григорий Перельман

@ATaco created PR for input support, probably doesn't break it horribly but untested.

Ignore that, it doesn't work

Arjun

@ГригорийПерельман How are those casted?

Григорий Перельман

By people with more rep than you.

Arjun

Do they appear in review queues?

Jan Dvorak

Yes

Arjun

06:13

But it says "0 questions` on then left side of "Reopen Votes".

Mistah Figgins

Are you on mobile or something?

Arjun

Yeah I am on mobile

*actually Tablet

Mistah Figgins

Once you get 500 rep, you can cast open close votes. Right now there are 2 reopen votes

Григорий Перельман

@ATaco added input properly in a PR

Mistah Figgins

The reason it says 0 answers is because there arent any. It has nothing to do with open/close votes

Arjun

06:17

I was referring to "0 questions" written to the left side of "Reopen Votes" section of Review Queues page.

Mistah Figgins

oh, misread, sorry

Arjun

No prob.

So, currently there are two votes for reopening. And when they get to five, the post will be reopened?

Mistah Figgins

yep

Arjun

Then what's the purpose of having Reopen Votes Review Queue page?

Mistah Figgins

not really sure TBH

I'm not too familiar with review queues

Arjun

06:23

Is the count still on 2?

Could you please tell!

Mistah Figgins

yes

Destructible Lemon

I'm not really sure which of chaotic neutral and lawful I am

Arjun

Now it says in review queue that there is one post that requires reopen votes review!

betseg

06:41

Remember when a 11 line npm package broke the internet?

It was a year ago

Григорий Перельман

@betseg No, actually.

Story time?

betseg

theregister.co.uk/2016/03/23/npm_left_pad_chaos

Григорий Перельман

thx

Wow.

betseg

> The wording we used here was not perfect.

> We don’t mean to be a dick about it, but [...] our trademark lawyers are going to be banging on your door and taking down your accounts and stuff like that

TidB

07:12

The ppcg script is working again, yey~

Qwerp-Derp

07:26

Hello

Григорий Перельман

o/

Qwerp-Derp

@ГригорийПерельман I'm making a tutorial for Clojure, currently on "Hello, World!" bit

Григорий Перельман

(princ "Hello, World!"), right?

Qwerp-Derp

(println "Hello, World!") would probs be better

You have to actually do quite a bit to get it up and running in a project

Григорий Перельман

Is there a REPL?

Your tutorial should probably use that for the beginning part if there is.

Qwerp-Derp

07:31

@ГригорийПерельман Yeah, but I want them to get used to making projects

I barely use the REPL myself TBH

IDK, maybe I should

Григорий Перельман

I almost never use the Python repl except to quickly test a feature, but it was really helpful when learning it.

Qwerp-Derp

That's true

Григорий Перельман

Java has a REPL now. I't kind of amazing. (Not really, but then again this is my homepage rn)

How the JEP project lists contact addresses: jigsaw dash dev at openjdk dot java dot net

ಠ_ಠ

Qwerp-Derp

Hmmm, I already told them how to set up Leiningen

Jan Dvorak

It's because email scrapers are dumb and spam filters haven't been invented yet

Qwerp-Derp

07:39

Which is a really popular Clojure management library

Григорий Перельман

Why don't you add a section in at the start? First, explain what Polish Notation is, then what commands look like, then how to use the REPL, then how to build a complete "Hello, World!" project.

Qwerp-Derp

Should I teach them how to use the Clojure REPL for HW and then move on to project stuff?

I'm not sure, since I want to add other things like functions down the line

@ГригорийПерельман Ooh yeah, that's a good idea.

I would have to completely revamp my file format though

Григорий Перельман

Probably not, just add a section at the start and moves some things back into it.

Qwerp-Derp

@ГригорийПерельман Do you want the repo?

Григорий Перельман

Sure

I don't know Clojure, I can give you feedback on how understandable it is.

Qwerp-Derp

07:43

Here it is

Григорий Перельман

In your "What is clojure" section, you spend more words explaining what Java and JavaScript are for than what Clojure is for.

Qwerp-Derp

That's true

I should explain how Clojure is a general-purpose language

Григорий Перельман

@Qwerp-Derp you shouldn't recommend using Sublime Text, a lot of people might be put off by the fact that it isn't free. The closest alternative is Lime Text, but that has to be built from source.

Qwerp-Derp

@ГригорийПерельман It's essentially free though, it's just a pain with popups

It's got really good support for Clojure IMO

I tried Atom, Sublime and IntelliJ for this, they all didn't work as well as Sublime IMO

Григорий Перельман

Did you try Notepad++?

Qwerp-Derp

07:52

@ГригорийПерельман I did, not as good as Sublime still

Григорий Перельман

You might want to try to make your tutorial not depend on the text editor being used. Just say something like "- A proper text editor for editing code. Sublime Text is recommended, but you can also use alternatives like Atom or Notepad++".

Qwerp-Derp

That's true

I'll make a short sub-tutorial for setting up Sublime

Wow, I realised there's a lot of stuff I can do better in my tutorial

Thanks for the tips @ГригорийПерельман!

Григорий Перельман

BTW, when trying IntelliJ, which CLojure plugin did you use? There's one called Cursive which is supposedly better than the JetBrains one.

Qwerp-Derp

@ГригорийПерельман I used Cursive, not particularly good

Григорий Перельман

¯\_(ツ)_/¯

Qwerp-Derp

07:55

I still personally like Sublime, I'm trying to mod Atom so that I like it

It's kind of a pain though

Cause on one hand, Sublime is really good for CLJ and CLJS, but bad IMO for web dev (HTML/CSS/JS)

But Atom is good for HTML/CSS/JS, but is extremely painful to set up for Clojure

I may end up making my own packages just to mod it enough

Григорий Перельман

For WebDev I would suggest WebStorm

Qwerp-Derp

I also may need to slightly "overhaul" the highlighter to mod it properly

Григорий Перельман

I'm a huge fan of JetBrains

Qwerp-Derp

@ГригорийПерельман It's really bulky though

I've already got PyCharm and IntelliJ

My plan for coding is Python = PyCharm, Java stuff = IntelliJ, everything else = one modded text editor

Григорий Перельман

Do you use the JetBrains toolbox?

Qwerp-Derp

07:57

Currently "everything else" = Clojure / web dev

@ГригорийПерельман What is it?

Григорий Перельман

It's a little tool that hosts all of the JetBrains tools you have access to, and also shows all of your projects made in JetBrains IDEs (and Visual Studio), as well as keeping everything updated.

Really convenient.

jetbrains.com/toolbox/app/?fromMenu

Qwerp-Derp

@ГригорийПерельман How many JetBrains IDEs do you have?

Another reason for not having a full blown IDE for web dev is because it's kinda overkill

I understand you need it for Python and Java

But for web dev it's honestly overkill IMO

Григорий Перельман

CLion, IntelliJ Idea, PyCharm, RubyMine, Ryder. I don't actually use the last two, I just wanted to mess around.

It was one click, I figured why not.

Qwerp-Derp

@ГригорийПерельман I thought you used WebStorm as well, cause you recommended it to me

I guess not

ATaco

I used to use npp, but now I use sublime

Григорий Перельман

08:02

I just knew it was a thing that's probalby awesome because it's made by JetBrains.

I don't do anything web-related.

Qwerp-Derp

@ATaco Paid or free version?

Григорий Перельман

Speaking of which, IntelliJ 2017.1 is finally out, I can stop worrying about my IDE breaking.

It adds Java 9, Regex Highlighting, and Emoji support.

Qwerp-Derp

@ГригорийПерельман You're missing out man

Григорий Перельман

I've heard the horror stories, no thanks.

Qwerp-Derp

@ГригорийПерельман Front-end or back-end horror stories?

Or both?

Григорий Перельман

08:04

Both

Qwerp-Derp

I personally only do front-end, and I find it alright

Григорий Перельман

Also, JavaScript hates me.

Qwerp-Derp

Backend though... that's a different story

@ГригорийПерельман There's plenty of alternatives to JS - TypeScript, CoffeeScript, ClojureScript, ES6 (I think that counts)...

Григорий Перельман

I might try it sometime

Qwerp-Derp

The one thing in common with all 3 (4?) is that they all have "script" in their names

@ГригорийПерельман Try what?

Mendeleev

08:06

I love jetbrains products.

Григорий Перельман

Eh, I'll download Webstorm right now, see how it goes.

Mendeleev

I use Rubymine daily, also Android Studio

Григорий Перельман

I'm still not sure how they got Ryder on linux.

Mendeleev

What is Ryder?

New Main Posts

0

Q: Interpret DecimaF*ck

DecimaF*ck is a BrainF*ck derivative. It consists of an integer (yes, only one) with no theoretical limits in size. Then, the integer is converted into binary. Then, the binary form of the integer is converted to BrainF*ck. Chart: | BF | DF | |> |000 | |< |001 | |+ |010 | |- |011 | ...

code-golf base-conversion interpreter

Григорий Перельман

08:07

@Mendeleev .NET IDE

It's in Beta

Mendeleev

For everything else I use vim, vim is a really nice text editor especially if modded (turns into an IDE with YCM)

.NET exists on Linux.

Hell, even Powershell exists on linux

Using it rn

Григорий Перельман

Powershell is open source

Mendeleev

ye ik

Kritixi Lithos

That's weird. I have a file called pwd in my $HOME directory

Mendeleev

I got it from the AUR

You should really consider using Arch.

Григорий Перельман

08:09

I just installed Web Storm in less than the time it's taking to update IntelliJ

ATaco

@Qwerp-Derp free

Mendeleev

Doesn't webstom come as a zip?

Also, I'm typing this from my bed. Yay bluetooth keyboards!

Qwerp-Derp

@ATaco Ayyy high five!

Григорий Перельман

@Mendeleev Jetbrains Toolbox

Mendeleev

oh

Григорий Перельман

08:10

@ATaco did you see my PR for ReRegex?

Mendeleev

My dad joked that Polyglot mean that you swallow everything

ahh multilingual humor

Going to sleep now. Zzzzzz

Григорий Перельман

Cya

Destructible Lemon

anyone wanna try and solve the puzzle I made?

betseg

08:26

Which one

ATaco

@ГригорийПерельман Yeah, I saw your PR, But I'm not pulling it right away.

Destructible Lemon

08:41

3

Q: What does it want?

So, I found this image. I feel like it wants something You might wanna go ahead and download the image, because it will be useful to be able to scribble around on the image for counting and stuff. It won't mind What does this image want? P.S. The puzzle is all in the image. It knows to tell ...

enigmatic-puzzle visual

betseg

09:19

Is it a melon and does it want to be destructed?

Destructible Lemon

no

it is an image

betseg

;_;

Destructible Lemon

I think the codegolf.se peeps might be good at solving it because it uses some maths that ppcgers are more likely to know than puzzlingers

TidB

Looking at the mail icon and the key, I'd guess it's something about cryptography

Destructible Lemon

I'm not sure I should be telling you this...

has nothing to do with cryptography that I'm aware of

you found a nice coincidence there

betseg

09:30

Woah I thought cryptography as well

Kritixi Lithos

It's a reverse SHA :P

Qwerp-Derp

Reading Animal Farm right now

Kritixi Lithos

I'm trying to figure out how vim indent files work

Destructible Lemon

@Qwerp-Derp Orwell is the good

Qwerp-Derp

@DestructibleLemon I've finished 1984 previously

Destructible Lemon

09:45

yee

Qwerp-Derp

They're both really good books

Kritixi Lithos

@DestructibleLemon Is that supposed to be a reference to the Yee meme?

Destructible Lemon

not necessarily

Down Christopher

10:12

@ГригорийПерельман It was accepted but it looks nice. I like it

@DestructibleLemon Yeah but if you skrew with settings the springs will literally break.

Sherlock9

@Riker @Mego Thank you for the pings. @quartata I have, in fact, seen that video before, but it's great to watch it again. Thanks :D

Fatalize

10:38

I absolutely despise american conventions. Spent an hour wondering how my code could invent events happening at midnight, when all it was was my date formatter reading "12" as "00" because I used "hh" instead of "HH"…

Anonymous

@Fatalize How can it be an American convention when it was invented prior to America being a thought in a rosy-eyed idealist's mind?

Anonymous

In fact, America was late to the AM/PM party, mostly because it was late to the sovereign country party.

Fatalize

Conventions on the hh/HH

it would make sense that the ISO standard and most common way to denote time would be hh to match mm and ss

but nope

Kritixi Lithos

"HH" is 24-hour and "hh" is 12-hour, right?

Fatalize

yes

Anonymous

10:50

Actually you can thank ISO C for that: %H:%M:%S is hh:mm:ss in strftime

Anonymous

If you're going to blame someone for inconsistency, at least blame the right entity

LegionMammal978

By the end of which year will Unicode contain more emoji than CJK characters?

New Main Posts

1

Q: The Tenacious Thai Calendar

In the Thai calendar the year 2017 corresponds to 2560. The Thai calendar is always 543 years ahead of the Gregorian calendar. Observant coders will note that 2560 is equal to 2^9 * 5, in other words it has 10 prime factors. This will not happen again for another 896 years! We call a year tenac...

code-golf number-theory date

Lembik

11:06

morning

LegionMammal978

monring

Kritixi Lithos

Grim non

LegionMammal978

Grin mon indeed

Kritixi Lithos

Except it's fatero non for me

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Meta Code Golf kolmogorov-complexity code-challenge Late new year resolution: I'm finally cleaning up all my input and output files I used for code golf previously. Only problem is, I don't know which input and output files go to which code golf question on this site. All problems used in this ...

ASCII-only

11:19

@Qwerp-Derp @ГригорийПерельман D: did someone say webdev is bad

Qwerp-Derp

@ASCII-only That wasn't me, I like web dev (only frontend though)

Lembik

so which answer am I supposed to accept when lots are of length 2?

in code-golf

Anonymous

The first one

Lembik

I will try to work out which that was. Thanks

ETHproductions

11:37

That would be the 05AB1E answer

I'm shocked there are no length-1 answers though

ASCII-only

@Qwerp-Derp 0/10 backend is good too

Lembik

@ETHproductions Thanks

@ETHproductions True. For example: Implicit: parse STDIN into array of numbers, strings, and arrays
N Get the resulting parsed array.
x Sum.

the N seems something that could have been skipped

I was also surprised there wasn't a bash command :0

(that was the Japt answer)

Qwerp-Derp

@ASCII-only Ehhhhh I tried messing around with node.js, it was alright I guess

I like frontend more though

ETHproductions

@Lembik You can skip using a variable, if you only want the first input. If input could have been given as an array, x would work for 1 byte

Qwerp-Derp

Apparently you can use Clojure for both frontend and backend

ETHproductions

11:43

I'm sure the 05AB1E is the same

ASCII-only

@Qwerp-Derp You can use pretty much any language for both

ETHproductions

(darn enter button right next to my apostrophe)

Qwerp-Derp

@ASCII-only Python

Java

Lembik

@ETHproductions got you

Anonymous

@Qwerp-Derp Python has Skulpt and brython. Java has Java applets (though you might get trout-slapped for using 00s vulnerability-ridden tech).

Qwerp-Derp

11:45

@Mego Skulpt/Brython isn't perfect though, I tried jamming the Logicode interpreter in there, with no success

In Clojure all you have to do is make a CLJS file and use a library like Reagent, which uses React

Anonymous

Skulpt is pretty good. Brython has some problems with parts of the Python stdlib being missing

ASCII-only

@Qwerp-Derp clojure.org/about/clojurescript

Qwerp-Derp

@ASCII-only ??? What's that for

ASCII-only

@Qwerp-Derp Compiles Clojure to JS?

Also list of transpilers to JS here

Qwerp-Derp

@ASCII-only What's your point though

ASCII-only

11:49

That you can use pretty much any language as frontend?

TidB

W e b A s s e m b l y

Qwerp-Derp

@ASCII-only True that

What I realised that I want to mean is that Clojure does it cleaner than Python

Technically Clojure is compiled yeah

ASCII-only

@Qwerp-Derp Cleaner?

Qwerp-Derp

That's subjective

Uhhh let me bring up a sample

(ns temp.core
  (:require [reagent.core :as reagent])

(defn page []
  [:div
   [:p "Hello, World!"]
   [:ul
    (for [a (range 4)]
     [:li a])]])

@ASCII-only How would you do HTML in Python?

ASCII-only

@Qwerp-Derp I wouldn't? It's probably a bad idea

This is why Jinja/Mako/other templating engines exist

Even node needs Nunjucks

Qwerp-Derp

11:57

@ASCII-only What do you use for backend?

ASCII-only

@Qwerp-Derp backend for what

Qwerp-Derp

Backend web dev

ASCII-only

node

because JS is the best language

Qwerp-Derp

@ASCII-only Ayy

For some reason my friend disses me because I use node :(

He uses PHP

Which in my opinion is a badly designed language

ASCII-only

PHP5 is not bad because object oriented languages are the best languages

But it's still PHP D:

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