The Nineteenth Byte

12:02 AM

actually some earlier answers satisfy that when considering one liners... maybe every line has a number of a certain length or something

Downgoat

12:48 AM

Dear NPM: don’t call it a patch if it bricks your computer in the process

9

Pavel

@Downgoat Did they do it again?

ASCII-only

CMP: Should file-exists be on File class? or FS module?

@Riker Because they're blurry cats? :P

Pavel

Would a Makefile be an appropriate place to install missing dependencies or is it more proper to complain at the user until they install the deps?

ASCII-only

@Pavel Makefile

Pavel

Ok

ASCII-only

1:00 AM

I mean, a lot of Ruby things install it for you.

And that's Ruby

Pavel

Well Ruby Gem is package manager

New Main Posts

1

Q: Matrix trace for any matrix through... Bresenham’s line rasterisation

Inspired by this. Agatha Stephendale, a sophomore who is really into raster graphics, has taken a course in linear algebra. Now she imagines matrices as rectangles, but in her artistic mind, she attaches diagonal lines to those rectangles and tries to compute traces along them. In fact, she want...

Pavel

Installing deps is the point

ASCII-only

@Pavel No as in they install it from inside the Ruby script

via shell command

Pavel

Ah

Dennis

1:00 AM

@Pavel Install dependencies how?

Pavel

@Dennis nuget install NDesk.Options

ASCII-only

:| you need a makefile for that?

Pavel

It does other things

I just didn't want to use msbuild

ASCII-only

oh

Dennis

@Pavel Does that modify the build or the home directory? Makefiles shouldn't make changes to the latter.

Pavel

1:03 AM

@Dennis It modifies the directory you run it in.

Which should be fine

Caching packages in home is an msbuild thing

Dennis

A Makefile still seems to be a weird place for this. I don't think I've ever had a Makefile that dealt with dependencies.

Pavel

@Dennis Same here, which is why I asked.

Dennis

Aside from simple compiler errors, I've only ever encountered ./configure telling me explicitly that it couldn't find X.

Pavel

Oh hey, I can specify a packages.config so nuget restore will work without msbuild

New Main Posts

2

Q: Eiffel Towers: Create a large "A" from "A"s

Create a function which given a number of lines n, make as a bigA. The horizontal bar of bigA must be at the middle row, or the lower of the two if n is even Assume a monospace font for output Output should be a string with linebreaks to break up the lines, with correct whitespace for left-pa...

code-golf ascii-art

Dennis

1:21 AM

I wonder if Autoconf can C#.

Downgoat

Is it a OK to implement events by spawning a pthread and polling and then calling the lambda

ASCII-only

@Downgoat :|

Pavel

@Dennis According to the docs, C, C++, Objective C, Fortran, Erlang, and Go, but not C#

Dennis

:/

Downgoat

@ASCII-only how else to implement

ASCII-only

1:31 AM

@Downgoat hmm what is poll for

Pavel

I did a thing so you don't have to call mono and can run a script directly:

Downgoat

@ASCII-only man7.org/linux/man-pages/man2/poll.2.html

Pavel

#!/usr/bin/env csi

#r "./project.exe"
Environment.Exit(Project.Program.Main(Args.ToArray()));

ASCII-only

@Downgoat yeah but what do you need it for

Pavel

(I haven't actually figured out a name yet)

Downgoat

1:32 AM

@ASCII-only Events

ASCII-only

@Downgoat yeah but why do you need the return value

Neil

@DJMcMayhem Firefox doesn't use malloc, instead it has its own copy of a custom allocator called jemalloc which it tries really hard to use everywhere (caused a problem with the MSVC CRT at one point though)

@ASCII-only please fix

Pavel

@Neil My dad works at Microsoft and even they don't use the MSVC malloc implementation.

ASCII-only

@DJMcMayhem well don't expect it to be anywhere near efficient for all cases, different mallocs are optimized for different usecases

Neil

@Pavel heh

Downgoat

1:34 AM

@ASCII-only ??

ASCII-only

@Neil >_> sorry will fix asap

Neil

@ASCII-only ta

ASCII-only

@Neil might have forgotten something, just checking to make sure: you haven't found any other bugs, have you?

@Neil Should be fixed now

Downgoat

I've never implemented an event loop so this is new

Neil

@ASCII-only ta

Destructible Lemon

1:37 AM

CMP: is Fractran a single argument OISC?

ASCII-only

:| I really should have fixed this earlier I only had to add two characters

Neil

now to go back and update my recent answer

Destructible Lemon

CMP: "A OISC" or "An OISC"?

ASCII-only

@DestructibleLemon An

Anonymous

@DestructibleLemon An

Neil

1:38 AM

@ASCII-only can't remember anything else recently, last update had some cool stuff

Dennis

@DestructibleLemon Of course. There is only one instruction, which takes a fraction as argument.

Destructible Lemon

what if... i were to pronounce OISC like "whisk"

Dennis

Then change the way you pronounce it.

6

Destructible Lemon

@Dennis oh yeah i guess... i was more thinking in terms of one argument oisc i guess

Pavel

Now do people say the letters individually or as one word

Destructible Lemon

1:39 AM

edited CMP

to make it less of a stupid question

Downgoat

@ASCII-only uhhh how should we go about making an HTTP server library in VSL

ASCII-only

@Neil wait. it did?

Destructible Lemon

yeah, i think i mentioned the idea of having a place on meta to have things that are cool, but off topic on main?

i think that would be cool?

ASCII-only

@Downgoat imo we should just link to another library for now

Downgoat

@ASCII-only but which library?

totallyhuman

1:41 AM

hehe i can just use imaginary cookies to bring out all sorts of cleverness from TNB

DJMcMayhem

@DestructibleLemon An

Destructible Lemon

basically anything too subjective goes on to the question or whatever: for example, codegolf.meta.stackexchange.com/a/16047/55896 relies on a sort of subjective requirement

and the winner is mildly arbitrary

CMP: is having a place to put off-topic challenges and stuff that happen to actually be cool for the community a good idea

Neil

@ASCII-only well, it's cleverer at inserting separators for a start

Destructible Lemon

ok so, if i ever make an OISC it's gonna be called "whisk" i guess

@Dennis yeah, i was more thinking about whether fractran's command has 1 argument or 2

Dennis

@DestructibleLemon Still yes. FRACTRAN cannot distinguish between 1/2 and 15/30, so it's really 1 fraction, not two integers.

Destructible Lemon

1:45 AM

@Dennis i think not distinguishing doesn't really make it true, but i guess i would mostly agree

ASCII-only

@Downgoat idk. something that has a lot of features probably

Downgoat

@ASCII-only :|

ASCII-only

@Neil I'm actually surprised that I managed to make that work haha

@Downgoat ? there's a lot of http libs out there

Downgoat

@ASCII-only pls link to one with stable ABI

ASCII-only

@Downgoat this maybe? or this? idk

Pavel

2:03 AM

Does gcc do tail-call optimization with -O3?

Downgoat

@Pavel yes

at least clang does

and it would be very odd if GCC didn't

godbolt says yes

Pavel

idk who that is, but cool

Dennis

Starting with -O2, yes.

Downgoat

@Pavel godbolt.org

Dennis

Try it online!

Pavel

2:10 AM

Ah, ty

HyperNeutrino

3:18 AM

just found out apparently shebang/kade goes to UW o_O i literally live right next to that

ASCII-only

@HyperNeutrino like UW is next door?

HyperNeutrino

ok "right next to" is context dependent :p

as in it's within walking distance

so like "right" next to maybe isn't accurate

left next to?

ASCII-only

@HyperNeutrino yes this is better

HyperNeutrino

:P

quartata

@Downgoat poll isn't much faster than select

Ideally you want epoll on Linux, kevent on OS X/BSD, and select on Windows

kevent > epoll > poll > select

I'm excluding Solaris because it's traumatized me

also don't do callbacks

it's 2018, if you don't provide coroutines then you are no longer a Cool Kid

Downgoat

3:36 AM

@quartata we're going to abstract to a concurrent priority-based model which should abstract threads so it should also be applicable in a web-based environment so the current way is that you can either dispatch a method in another thread and join that later

@quartata :| does this mean I need seperate STL for each OS

we're not doing kotlin-style blocking async stuff since that seems to void the point

@quartata there is no benefit to using select over poll

Destructible Lemon

do we even have a square a number challenge?

Downgoat

@DestructibleLemon please lets not make trivial challenges for basic tasks

Destructible Lemon

ok but i would have expected it to exist i guess

quartata

3:51 AM

@Downgoat the only places where poll is going to be available and not anything better is really old Unixs, so why bother

Destructible Lemon

@Downgoat it's not trivial in every language

that's like saying the prime number challenge is bad because any self respecting golf lang has a prime builtin

Downgoat

@DestructibleLemon are you comparing multiplication to primality testing

I mean even adding numbers isn't trivial in some languages

quartata

select is the one thing you're guaranteed to have, but it's not very good

Downgoat

that doesn't mean we should have an "add 1 to input" and "subtract 10 from input" and "divide first input by second input" challenges

Destructible Lemon

it might be trivial to square in a lot of languages, but primality testing is also trivial in a lot of languages

quartata

3:53 AM

You definitely want to use conditional compilation to get better stuff like epoll

Destructible Lemon

@Downgoat you accuse me of false equivalency and then post this

also the second one is actually decent when considering lower level languages

Downgoat

@DestructibleLemon That's not an effective justification since we've agreed at this point that catalogues were not good idea

Destructible Lemon

fine

quartata

you know @Downgoat Julia just uses libuv to do all this right

Destructible Lemon

also i'm still kind of annoyed that people say or said allowing 0 byte answers is ok because people won't upvote them, then seeing upvoted 0 byte answers

quartata

3:55 AM

you don't have to do it yourself if you don't want to

I suppose I should also mention Node huh... :P

love how the first language I think of that uses it is Julia and not the language it was literally made for

Downgoat

@quartata that's probably the best idea but I don't want to pile too many dependencies on VSL

that said libuv is relatively fundamental

that's probably the best choice brb checking api

quartata

It's awful but

you're probably not going to get much better in C I suspect

Downgoat

@quartata libuv is awful? why is that the case

quartata

No I mean the API

libuv is good because it's fast, that's why I appreciate it

but it's C so not everything will be very nice

Downgoat

at least the documentatino is better than LLVM

quartata

3:59 AM

oh yeah definitely

Newly Featured Questions

310

Q: Regex that only matches itself

There are some pretty cool challenges out there involving regex (Self-matching regex, Regex validating regex) This may well be impossible, but is there a regex that will ONLY match itself? NOTE, delimiters must be included: for example /thing/ must match /thing/ and not thing. The only match p...

code-golf string decision-problem regular-expression pattern-matching

quartata

The GCC manual blows LLVM out of the water

Downgoat

LLDB is the best thing ever though

it JITs lli files though differently then executing a LLVM-compiled file

quartata

it came by default on OS X and I haven't bothered to install gdb (only have gcc and gfortran) so it bugs the shit out of me everytime I have to use it and I'm expecting gdb

Downgoat

@quartata do you know if libuv will mess with non-libuv things trying to open TCP connection

quartata

4:05 AM

well you'll block the event loop

Downgoat

:| libuv runs on main thread?

I was planning to have Main Thread -> Event Thread -> Event Handler Thread

quartata

I mean you can run it on whatever thread you like

but if you then also have blocking I/O in your handlers it will block execution of course

Downgoat

If handlers are put in a seperate thread from main execution they won't block it

quartata

I mean you could do that

or you can just offer something like a ThreadPoolExecutor or EM.defer

Let the user control dispatch

this gets tougher when you get into hybrid threading

there I could see it being useful to have a pool of handling threads for all handlers, although it's kinda weird to have a function run on one thread and its callback potentially on another

hm

Really though regular blocking I/O and async don't mix, they're not supposed to. So don't worry about that so much

That shouldn't be the reason for having a separate thread

I wonder what NIO does, I should go check. Java STDLIB source code is actually super easy to read

Ironic

Nathan Merrill

4:32 AM

@PhiNotPi It's been too long since you spoken in Primes and Squares, so I can't ping you (pouting goes here). I've got a graph theory question you might be interested in

Destructible Lemon

is there a TC version of redcode from corewar?

Pavel

If Linux binaries are called ELF files does anyone know what Windows binaries are called?

quartata

PE

Pavel

Thanks

quartata

It stands for Portable Executable. har har.

Pavel

4:42 AM

I'm not sure what they could be refering to

They aren't very portable

Destructible Lemon

@quartata why are you in so many rooms?

quartata

I think it's referring to architecture but

@DestructibleLemon why are you in so few rooms

Destructible Lemon

ASCII-only

> Arcturus

so many of these rooms are so dead

quartata

yeah yeah I don't prune my favorites list

ASCII-only

4:47 AM

I haven't even seen Eridan in forever

quartata

I'm still active in about a quarter of those

Pavel

I try to minimize the amount of rooms I'm in

Nathan Merrill

I have no idea how you guys don't prune your room list

I've got exactly two rooms on my favorite list, and TNB isn't even one of them

I hate having a long list of rooms on the sidebar

quartata

TNB is actually not on my favorites list

@NathanMerrill it doesn't show all of them

at any rate I do have a legitimate need to be in at least 5 particular rooms

Although not all on this network

Pavel

I'm always in talkt.tio, frequently in tnb, occasionally in PPCG-gaming, and in the Apl Orchard every wednesday for Adam's lessons.

Downgoat

5:47 AM

I have a question about lazy variables and how they should work in VSL. So you declare a lazy variable like:

  lazy let x: String = "Hello"

but you can also do:

func getBestAnimalName() -> String {
    print("this is obvious")
    return "Goat"
}

lazy let x = getBestAnimalName()

so in the latter case

if you do x = "foo"

assuming x has not been accessed before yet

should this is obvious still be printed when the assignment happens?

ASCII-only

6:06 AM

hmm anyone here good with perl?

New Meta Posts

7:41 AM

0

Q: Should I accept an answer to a question I cannot validate?

Based on information in this post I feel I should try and validate all answers to my challenges. That hasn't proved too hard so far which is good, but Dennis's answer here technically wins the criteria of the challenge, but I cannot actually validate it. The information in this post doesn't rea...

discussion rules

New Main Posts

8:39 AM

0

Q: Shape Identifying Program

Your task is to build a program that identifies the shape of the input. The shapes to be identified can be any of the following: Square To be identified as a square, the source must have lines of all equal length, and the same number of lines as characters per line (newline characters excluded)...

code-golf string source-layout

DLosc

@Downgoat No. Assigning to x shouldn't require evaluating the previous value of x, so the function should never be called.

New Main Posts

10:07 AM

0

Q: Compile Quarterstaff to BF

Quarterstaff repo here with additional quarterbf interpreter: rather bereft of documentation, however, but it does contain the two interpreters you can go to https://tio.run/#quarterstaff to run quarterstaff programs online. however, the TIO BF implementation seems to have limited cells, accordi...

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