The Nineteenth Byte

4:03 PM

0

Compete with awk fastest-code The goal of this challenge is to see if the assertion often see in awk question on SO is true: This would be faster in whatever Input A 10 million lines file generated by this script line: awk 'BEGIN{for (i=1;i<=10000000;i++) print (i%5?"miss":"hit"),i," t...

Tensibai

Hope I wrote it clear :)

Anonymous

@Tensibai It looks good to me, but I'm not the best at catching issues in the Sandbox. I'm sure Peter will go through every detail with a fine-toothed comb, though.

Geobits

@Tensibai From what I can tell, it seems like I can just not read anything except every tenth line, since those are the only even hits. Is that intended?

Anonymous

@Tensibai Just one thing: you should specify how you are going to do timing (your machine, a server, whatever).

Geobits

Actually, I should just be able to output "fourth hit third" 1000000 times without reading it at all.

Anonymous

4:10 PM

@Geobits I believe the intention is, your program should work with any file in that format given those rules. The script given is specifically what will be used for timing.

VoteToClose

^

Geobits

I assume you're right, but it would be better to have the script actually generate an example that isn't static.

Anonymous

@Tensibai You should clarify that if that is correct

Geobits

Randomize the numbers, and vary the column contents.

Stefnotch

Apparently Javascript isn't JavaScript:
Javascript xsot 205
JavaScript Stefnotch 208
JavaScript (v?) qumonio 214
JavaScript ES6 Cᴏɴᴏʀ O'Bʀɪᴇɴ 305

VoteToClose

4:11 PM

@Tensibai You need a timing server or a place to test this where the results will all be comparable. Maybe a c9 workspace?

Stefnotch

Somebody should post a question on meta to decide what name should be used for Javascript...

Anonymous

@Stefnotch That's what happens with versionings and misspellings. The snippet isn't that smart.

Geobits

@Stefnotch Better to just ban Javascript in all its forms :P

VoteToClose

^^ Should be caps insensitive.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@Mego Awkward when JavaScript is longer than C#

3

Geobits

4:13 PM

I think that's a sign something went terribly wrong.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

Yup.

Anonymous

import random;map(lambda x:print('%s %d third\t \tfourth'%(random.choice('hit','miss'),x)),range(10**6))

Anonymous

That'll give random hits, and for bonus points it's Python 3

Cᴏɴᴏʀ O'Bʀɪᴇɴ

import calculus

Geobits

I still think randomized third and fourth column data would be better also.

Anonymous

4:15 PM

import random;map(lambda x:print('%s %d   %s\t \t%s'%(random.choice('hit','miss'),x,random.choice('first','second','third','fou‌rth'),random.choice('first','second','third','fourth'))),range(10**6))

Anonymous

It may not make much sense, but hey, it's random

Anonymous

Ugh it won't work, stupid Python 3 maps

Sp3000

@Mego 1) Will that run? 2) map(lambda:..., ) whyyy

Anonymous

@Sp3000 Because lazy

Sp3000

But list comp :(

feersum

4:18 PM

No, the point is map lambda is poorly golfed.

And is un-lazy, creating extra typing work.

Sp3000

^^ that

Anonymous

shhh

mınxomaτ

@CᴏɴᴏʀO'Bʀɪᴇɴ C'mon, starring your own repo? :D

Anonymous

You've discovered my secret

Anonymous

I'm not very good at python golfing

New Sandboxed Posts

4:19 PM

0

A: Sandbox for Proposed Challenges

code-challenge string Auto BATCH golfer. I love BATCH, despite it's shocking lack of functional commands, despite even due to its lack of non-integer support. Why? Because this works: SET var=SET var i=0 This would evaluate to: SET var=SET SET i=0 Fantastic, isn't it? I've used this techn...

Anonymous

#!/usr/bin/env python3
import random
n=1
while n <= 10**6:
    print("%s %d %s %s"%(random.choice(["hit","miss"]),n,random.choice(["first","second","third","fourth"]),random.choice(["first","second","third","fourth"])))
    n+=1

Anonymous

There, ungolfed and not stupid

Anonymous

Nicer format now too, no evil tabs

Sp3000

Line 5 too long, -1 :P

Anonymous

@Sp3000 damns given critically low, try again later :P

Rainbolt

4:24 PM

For some reason I read that as "300 damns given. Critically low. Try again later :P"

Anonymous

@Rainbolt I have a minimum operating capacity of 10501 damns

Geobits

@Rainbolt That is weird. It should definitely be 3000 damns given.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@mınxomaτ shhh because stars

Anonymous

Man, > 100 rep already today, and I haven't even had my first cup of coffee

Tensibai

@Geobits Actually yes, as there's a hit every 5 entry and the filter is on the word hit followed by even number, so it's exactly each 10th line

Geobits

4:27 PM

Wait, so it's intentional that I don't need to read the file?

Or not?

Tensibai

@Mego I will integrate into github to time within travis

@VoteToClose Same answer as above :)

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@NewSandboxedPosts Oh, look, what an interesting challenge. ;P

Geobits

Nothing like shameless advertising, amirite?

Anonymous

@CᴏɴᴏʀO'Bʀɪᴇɴ Looks boring, -1

feersum

Even if you have read the file, doesn't seem like a very good fastest-code challenge.

There's no computational content, so it boils down to figuring out which linux syscalls give the fastest I/O.

2

Tensibai

4:30 PM

@Mego and @Geobits I'll see how I can make others test cases and make 3 tests instead.

Anonymous

Heads up people, my bounty on this question expires tomorrow:

Anonymous

19

Q: Golf Me An OOP!

Golf Me An OOP! Two important components of object-oriented programming are inheritance and composition. Together, they allow for creating simple yet powerful class hierarchies to solve problems. Your task is to parse a series of statements about a class hierarchy, and answer questions about the...

Tensibai

@Geobits No, not intentional, the idea is to read the file.

Anonymous

It will be awarded to the shortest answer posted after the creation of the bounty

Tensibai

@feersum you can see it this way yes. Still ahve to filter and split

feersum

4:34 PM

However you do that within reason, the I/O is going to consume the vast majority of the time taken by the program.

Tensibai

But if it sounds useless, nevermind, seems no one wish to try building a C answer to compete anyway

Anonymous

I would do a C answer, strtok and atoi aren't hard to use :P

Tensibai

@Mego never said the challenge is hard, it's a kind of simple task done with awk, getting down to 1s on a t1.micro (used by travis) with mawk sounds the fastest gun to me

After the 10M lines can become a problem on low memory systems, streaming is the way to go and is where there's the most time lost

VoteToClose

Java would suck at this, but I'll post one anyways.

Geobits

Well, generally speaking, our [fastest-code] challenges are usually based on computation or algorithm differences. If it's wholly/mostly IO-bound and runs within a second anyway, timing is iffy.

feersum

4:38 PM

If the speed depends a lot on some hardware that most users won't have access to, that's another reason not to make this challenge.

Anonymous

That's dumb... Why is <b ... > getting interpreted as a bold tag inside a <pre> block?

Geobits

Isn't that the default behavior?

Anonymous

I thought <pre> blocks prevented tags from being interpreted

Geobits

jsfiddle.net/jgzzL2wp

Anonymous

4:54 PM

Weird

Anonymous

Oh well, a simple regex will solve the issue

Geobits

^ famous last words

5

Anonymous

Or so I thought

Rainbolt

@Geobits I love that song

Geobits

Best quote from an MCR member:

> I think emo’s a pile of shit.

Anonymous

5:07 PM

There, fixed finally

Tensibai

Gtg, I'll see if I can improve the wording on the rules tomorow

Optimizer

@Mego and now you have 2

quintopia

Have there been any code golf challenges where the goal is to create a standalone portable executable, and the size of that file is how you are judged?

undergroundmonorail

@MartinBüttner we were in sync there for a second

it was a beautiful thing

New Main Posts

2

Q: Separate a list into even-indexed and odd-indexed parts

Inspired by this question: Make a function (or a full program) that receives a list of numbers and outputs the list rearranged, so that even-indexed numbers appear first, and odd-indexed numbers follow. The values of the numbers themselves don't affect ordering - only their indices do. All indic...

code-golf array-manipulation

0

Q: Make America(n Maps) Great Again

The cartography team of U.S. Republican presidential hopeful Ben Carson is having some trouble with their maps (image via Washington Post): The problem is they don't have the Right Tool For The Job™. They need the most compact and reliable program possible, so they never have to worry about ma...

code-golf graphical-output image-processing

Rainbolt

5:14 PM

@quintopia If the size of the output is the scoring criterion, then that is not a code golf. It's a code challenge.

feersum

@quintopia No, but there's a meta question about it

Martin Büttner

@undergroundmonorail it was

@Rainbolt more specifically, this sounds a bit like metagolf (@quintopia)

undergroundmonorail

6

Q: Are Sizecoding Questions On Topic?

This conversation popped up in chat at one point. There is a subtle (yet important) distinction between code golfing and sizecoding: code golfing is an attempt to reduce the human readable source code, while sizecoding is an attempt to reduce the machine code. Is sizecoding under the general he...

discussion asking-questions

oh

i didn't see feersum's message

feersum

@quintopia's question is not like metagolf at all.

It is a code golf with a language restriction, basically.

Rainbolt

How is it not? You produce an output (a portable executable), and the size of the output is your score. That sounds exactly like metagolf if I am reading this tag wiki correctly. "A metaprogram produces a program which solves a given task, and the length of that output determines the score of the original program."

The given task is "produce a portable exe"

Ooooh... there's another layer in there

undergroundmonorail

5:18 PM

it's weird because usually when you say "this C program solves a task" but that's just shorthand for "this C program tells a compiler how to create a program that solves a task"

Martin Büttner

I think the tag wiki is just worded a bit badly.

I think "that output" refers to the size of the generated code

At least that's how we've been using metagolf

(because the output of the generated program is usually fixed)

Rainbolt

Okay so in this case the generated program is an exe, and the task it solves is "do nothing"?

quintopia

@Rainbolt the goal is to make a program that does something else... And the size is judged as the full size of a portable executable that includes that program

Rainbolt

The description is getting more vague by the second

feersum

^

Rainbolt

5:20 PM

You should just sandbox it and see what happens

feersum

Would an answer to the challenge be (a) a portable executable, (b) a program that generates portable executables, or (c) a C (or whatever) program that is then compiled to an executable?

undergroundmonorail

i think what's being asked is "can i ask a code-golf question where the only language allowed is x86 machine code" in which case i think the answer would be "yes"

but i don't know how well it would go over

Anonymous

@undergroundmonorail That would be restricted-source, aka frequently-boring

quintopia

@feersum the first

feersum

That's what I thought originally. So it's not metagolf.

Is it for any arch/OS or only a specific one?

quintopia

5:28 PM

Any. Hence portable.

feersum

uh what

Anonymous

Portable Executable

The Portable Executable (PE) format is a file format for executables, object code, DLLs, FON Font files, and others used in 32-bit and 64-bit versions of Windows operating systems. The PE format is a data structure that encapsulates the information necessary for the Windows OS loader to manage the wrapped executable code. This includes dynamic library references for linking, API export and import tables, resource management data and thread-local storage (TLS) data. On NT operating systems, the PE format is used for EXE, DLL, SYS (device driver), and other file types. The Extensible Firmware Interface...

Anonymous

Is that what you mean @quintopia?

feersum

You can't create an executable that will run on every operating system.

Geobits

PE is a bad joke if P is supposed to mean 'portable'.

quintopia

5:30 PM

I was just thinking about how very concise languages like Pyth and CJam have complex interpreters behind them, while languages like brain fuck with very small compilers are not very concise. And what the happiest medium you could get when adding the size of the two together could be.

@feersum But you can create some that run on several, as long as you don't need to lean too heavily on the system

feersum

What do you mean by "portable executable"? PE format or something else?

Is the challenge to create a polyglot that runs in the most operating systems?

quintopia

I didn't mean something specific by it. I haven't thought it through that much. I just meant it should stand alone and run on more than one OS

Anonymous

Not gonna happen

Anonymous

Windows, OS X, and Unix/Linux all have their own formats (PE, MACH-O, and ELF, respectively)

feersum

Modern OSes do header checks, so you won't be able to do that between them.

quintopia

5:35 PM

Ah

feersum

You could probably find some old stuff from the 80s that wouldn't.

quintopia

Then maybe it could be a family of executables, all compiled from the same code, size measured as the max size over them.

Geobits

One problem with that might be that not everyone has all three/however many to easily compile on.

feersum

Now it's more like actual sizecoding. Which is not really any good for PPCG.

Geobits

If a challenge requires me to compile something on a Mac, I'll just skip it.

feersum

5:38 PM

Results are not reproducible, etc.

Picking a specific OS and creating an executable for it seems most doable.

Stefnotch

Does anybody here know codeforces? If yes, what are the contests like?

feersum

Same as any other algorithmic programming contest.

Stefnotch

Are you participating?

feersum

?

VoteToClose

@Mego Your python answer is only one byte bigger than my answer. o-o

quintopia

5:47 PM

It's also the obvious python thing to do. Basically "did you get here first"? :p

Rainbolt

Wow, two answers, two accepted answers in one day on SO. I'm two for two.

And I got that oh so satisfying comment that I wanted.

Thankyou Rainbolt worked this worked perfectly! — Duncarn 1 min ago

VoteToClose

Ooh: challenge idea. Make a code that outputs a truthy. However, the score is based on the lowest time required to brute force the source code.

^ Given a certain method.

quintopia

Isn't that the same as shortest code?

Geobits

Seems like it would just go to whatever language has the shortest "output truthy", since brute forcing would almost certainly depend mostly on length.

Rainbolt

@Geobits How dare you edit the code in my SO answer to be correct after it has already been accepted and OP said it worked?

quintopia

5:53 PM

(plus lexicographic ordering)

TimmyD

Plenty of languages support 1 as a valid program and also have 1 as truthy

Geobits

@Rainbolt I know, right? :D

feersum

Snails (my 2d pattern matching language) prints 1 on empty input + empty program.

Geobits

I'm sure there's probably a language where the empty program outputs a truthy (like a success code, etc).

Ninja'd :(

Martin Büttner

@feersum as does Retina

quartata

6:10 PM

Seriously why does Calvin post his challenges at 1 AM

Now all the golfing languages I know have been done

El'endia Starman

haha

I'm actually planning on posting the Black and White Rainbows one very soon.

VoteToClose

@quartata Are you asking the language to figure it out for you?

El'endia Starman

Just gotta fix up a few things.

Optimizer

@El'endiaStarman black and white rainbow? what next? "Correct and Wise AlexA."?

4

Cᴏɴᴏʀ O'Bʀɪᴇɴ

Shameless advertisement

Optimizer

6:14 PM

uggh, these are not my last words

neither are they famous

VoteToClose

Except if Alex sees them. c;

Optimizer

oh, what is he gonna do? peck me to death? I have thick fur layer just for that.

quartata

And Rotor can't do it due to how evaluation works

I need to add a "no evaluate" flag

VoteToClose

@CᴏɴᴏʀO'Bʀɪᴇɴ Vitsy kinda does this by default. XD

quartata

@VoteToClose Took me a minute to get that

Cᴏɴᴏʀ O'Bʀɪᴇɴ

6:15 PM

@VoteToClose Shhh

quartata

@CᴏɴᴏʀO'Bʀɪᴇɴ esolangs.org/wiki/Enema

El'endia Starman

Feast your eyes. :P

New Main Posts

1

Q: Reverse Boustrophedon Text

Boustrophedon is a type of bi-directional text where successive lines alternate between reading left-to-right and right-to-left. Character direction was also mirrored with respect to reading direction. In reverse boustrophedon writing systems, characters were rotated 180 instead of mirrored. Cha...

code-golf unicode typography

VoteToClose

@CᴏɴᴏʀO'Bʀɪᴇɴ See: m syntax

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@Optimizer Bird vs. Dragon vs. GOL glider vs. Llama vs. Impossible Triangle vs. a flower vs. a penguin vs. a mystical floating downvote.

@VoteToClose Cool? What about it?

Optimizer

6:17 PM

The only thinkg mystical about that downvote are is non-existant downvoting powers

they are still a mystery.

VoteToClose

Isn't that what the language is doing? Basically tying methods to certain letters? (for me, it's numbers).

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@VoteToClose Ah, no. Any user can open an issue on the REPO for a command suggestion.

VoteToClose

OH. Right.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

^_^

Don't be shy, feel free to take some commands.

;)

quartata

@NewMainPosts Too bad my system doesn't support any of these characters

Geobits

6:22 PM

Who is f?

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@f

feersum

@CᴏɴᴏʀO'Bʀɪᴇɴ f is the issue I just opened.

Geobits

Remove all you like, I still wonder who f is :/

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@feersum Oh, XD

Optimizer

@Geobits you already have an answer

Cᴏɴᴏʀ O'Bʀɪᴇɴ

6:24 PM

@feersum <3 thanks

Geobits

Neither of those replies seems like a definitive answer, though.

Optimizer

then you can go find f yourself.

2

Geobits

Is f you?

Optimizer

no, f is you

Geobits

I'm sure as f it is not.

Optimizer

6:29 PM

that does not make any sense at all

Geobits

It makes sense both ways...

Optimizer

only one ways

not the other

Geobits

I'm (as) sure (as the person named) f (is sure that) it is not (me).

I'm sure as f(uck) it is not (me).

Optimizer

oh

I am not as observant as f in english.

Geobits

f is fun.

El'endia Starman

6:32 PM

@Mego To do that, I'd have to learn elliptic curves. :P

Cᴏɴᴏʀ O'Bʀɪᴇɴ

fffffffffff

El'endia Starman

-ooey!

Optimizer

f sure is

What was the last time you were f?

New Main Posts

2

Q: Black and White Rainbows

Given an image that has only black and white pixels and an (x,y) location that's a white pixel, color the white pixels based on their minimal Manhattan distance from (x,y) in a path that only involves traversing other white pixels. The hue of the colored pixels must be proportional to their dist...

code-golf graphical-output image-processing

Geobits

-1 Rainbows cannot be black and white

Cᴏɴᴏʀ O'Bʀɪᴇɴ

6:35 PM

@@feersum Added

Geobits

if(feresum==feersum)System.out.print("strange");

Cᴏɴᴏʀ O'Bʀɪᴇɴ

from STDOUT on line 1: strange

El'endia Starman

@xnor Excellent, thanks! Another -6 bytes! :)

@Geobits Blame @Calvin'sHobbies, he's the one who titled it! :P

Geobits

I blame nobody, only pass judgement from on high.

El'endia Starman

Wow, sneaky @Calvin'sHobbies. Since when did your name have an i in it?

Geobits

6:42 PM

o_O Since he's been here, I thought.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

^

Geobits

Two of them, in fact ;)

Cᴏɴᴏʀ O'Bʀɪᴇɴ

Whoa @feersum is the only person without an i

El'endia Starman

Wow, never noticed that before.

I always thought he was "Calvin's Hobbes". Not "Hobbies".

Geobits

Jul 21 '14 at 13:14, by Martin Büttner

this guy http://codegolf.stackexchange.com/users/26997/calvins-hobbies ... member for 14 days and he asked 12 pretty decent questions without ever sandboxing one of them... what on earth...

4

feersum

6:43 PM

@VoteToClose doesn't have an i.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

* talking at the moment.

El'endia Starman

@Geobits So he was a master challenge writer practically from day 1. Figures. :P

Geobits

Yea, @Calvin is pretty much a freak :P

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@Geobits I started with a terrible challenge. Then I had a meh challenge. Then I had my best challenge :P

Geobits

I've a pretty decent record for challenges, but nothing like CH.

feersum

6:54 PM

@El'endiaStarman The "algorithm outline" in your question is totally unclear to me.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

^

El'endia Starman

@feersum You seem to have a strong tendency to criticize or disagree and then offer no more explanation. That said, how would you (and Conor) do the Euclidean algorithm?

Also:

I wanna be the very best / Like no code ever was / To not crash is my test / To debug is my cause! / I will travel across the LAN / Scripting far and wide / Trying hard to understand / Why my BIOS fried! / Codémon, it's you and me / Golfing all the eye can see / Codémon, you're my best friend / After the program ends! / Codémon, a lang so true / No segfaults will pull us through / You teach me and I'll teach you / Codémon, gotta golf em all! — Mew Feb 3 at 4:58

^ Awesome. I sang it.

feersum

@El'endiaStarman I wanted to get your attention before asking mroe questions.

El'endia Starman

Ask away. :)

feersum

Is the algorithm supposed to describe both Manhattan and Euclidean or only the latter?

Cᴏɴᴏʀ O'Bʀɪᴇɴ

6:58 PM

@El'endiaStarman Ping me next time ;) And I'm just confused and tired. Not a problem from me.

strawpoll.me/6047282

El'endia Starman

@feersum Only Euclidean.

feersum

What is it that you're trying to calculate with this algorithm?

El'endia Starman

The flood-fill component is central in my program to both, but I calculate distance differently.

Basically, I go to every pixel reachable by a straight line from the origin. Then any edges there are, I inch around (and also cover line-of-sight pixels from any new pixels).

feersum

E.g., one way of considering Euclidean distance would be to consider each pixel as a unit square, and calculate the shortest distance in the white region from the center of the start square to the center of the destination square.

El'endia Starman

And to calculate that shortest distance, you have to "cling" to edges of black regions.

feersum

7:02 PM

What is "significantly higher"??

Calvin's Hobbies

@Geobits Since always..

feersum

Does your "int()" function round or truncate?

El'endia Starman

@feersum I implemented that as 10 units higher. It's intended to remove discontinuities while keeping the algorithm fast enough.

Truncate.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

Mini-challenge count the number of is in a string input

Calvin's Hobbies

darn edits

feersum

7:04 PM

This algorithm outline is hard to understand and possibly non-deterministic.

Maybe you should remove the Euclidean option.

Calvin's Hobbies

@Geobits Yeah I miss the good old days when I could impress Martin

Cᴏɴᴏʀ O'Bʀɪᴇɴ

O_O

I only used 2 stars today and I'm out of stars

El'endia Starman

@feersum There is no randomness. I want to keep the Euclidean option because it's a challenge.

Look, I'm open to loosening up the Euclidean algorithm requirement, but I need to be able to keep it specific enough and understandable enough. It would be helpful if you tried to implement any Euclidean algorithm and tell me how you did it.

feersum

But you have this "minimum" that gives a different answer depending on what order the numbers are supplied to it.

El'endia Starman

The difference in the final result will barely be noticeable.

feersum

7:07 PM

e.g. min(21, 14, 10) = 14 but min(21, 10, 14) = 10

I already described a way to define Euclidean distance.

9 mins ago, by feersum

E.g., one way of considering Euclidean distance would be to consider each pixel as a unit square, and calculate the shortest distance in the white region from the center of the start square to the center of the destination square.

El'endia Starman

Yeah, but I don't really understand that.

How does one "calculate the shortest distance"?

feersum

The connected white pixels form an orthogonal polygon.

The distance is the shortest path within that polygon.

El'endia Starman

And there are existing algorithms for this?

feersum

Doubtlessly.

Calvin's Hobbies

@feersum I think it's ok. It doesn't matter if the output Euclidean images aren't exactly pixel perfect. It will be easy enough to tell visually whether the algorithm is correct.

feersum

7:12 PM

I don't think my definition should be used. It would be very slow and difficult.

El'endia Starman

Would it be alright if I said "Honestly, it doesn't really matter too much what algorithm you use, it just has to look like this:"?

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@El'endiaStarman You don't have to worry about hard-coding, so you should be fine.

feersum

The existing description would be OK if it was clarified.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

Should I terminate script on error in Comm?

Or (silently) proceed

TimmyD

> All these answers under 30 bytes and PowerShell be like "Hey, at least I'm beating F#"...

Cᴏɴᴏʀ O'Bʀɪᴇɴ

7:21 PM

@TimmyD What's F#? o_O

El'endia Starman

A musical note.

Just like C.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

Hah. I read the # sometimes as hashbang or merely bang. So when I read F#... e_e

TimmyD

@CᴏɴᴏʀO'Bʀɪᴇɴ research.microsoft.com/en-us/projects/fsharp/default.aspx

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@TimmyD Ooo sounds cool!

Geobits

Except that it's .NET and all ;)

Cᴏɴᴏʀ O'Bʀɪᴇɴ

7:25 PM

@Geobits Is .NET bad?

TimmyD

@Geobits It's OSI under Apache licensing -- fsharp.github.io

feersum

It's .NET, but that page weirdly mentions emacs and vim?

Geobits

This still sounds better IMO.

@CᴏɴᴏʀO'Bʀɪᴇɴ I assume so. I haven't played with it much since the very early versions. I was using VB until that point for some stuff, but then got active with a big C project and haven't messed with it since.

I'm just going to assume it's still not fun until I learn otherwise.

It was quite a change coming from VB6, though :P

TimmyD

Yeah, .NET is ... quirky.

There's a lot of really cool things, and there's a lot of really boneheaded things.

mınxomaτ

I really like JScript 10. Basically like C# (or VB), but the syntax is JavaScript. Sad that MS dropped it.

Full .NET support though. And everyone who has .NET installed already has the compiler.

Geobits

7:32 PM

My biggest complaint is the platform. After switching my home PCs over to linux, I just didn't see the point continuing with .NET at all.

TimmyD

So ... try F#

Geobits

Isn't it still .NET based, though? There are too many languages to learn that are more easily compatible across platforms IMO.

TimmyD

> F# runs on Linux, Mac OS X, Android, iOS, Windows, GPUs, and browsers. It is free to use and is open source under an OSI-approved license.

fsharp.org

mınxomaτ

The latest F# from MS is .NET. The last native x86 F# was shipped with VS6.

Geobits

Okay, let me put it another way: What advantages would it give me over the Java/C I'd usually use? Or what advantages over python/ruby/haskell if I wanted to learn something new?

mınxomaτ

7:37 PM

Well try it. If you benefit in any way, you'll know.

If not, well, you learned something new. I guess.

flawr

@El'endiaStarman Nice challenge=) Now I am waiting for the results of the big maze, this does take a while=) Funnily I have already done something similar a few months a go, so I could just adjust and golf that code somewhat=)

Geobits

^ not encouraging

El'endia Starman

@flawr Yeah, mine takes a while too and it's somewhat efficient. :P

TimmyD

The big difference between F# and C/Java, is that it's a hybrid-functional language rather than strictly object-oriented. It's also very (very) strongly typed.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@Geobits Oh I see

mınxomaτ

7:40 PM

@TimmyD How is C "strictly object-oriented"?

feersum

They seem to imply that some one's system does support execution of F# in the browser..

Cᴏɴᴏʀ O'Bʀɪᴇɴ

Though tbh once ES7 is out my life is complete

TimmyD

@mınxomaτ Durr ... that's what I get for editing my post halfway through

Geobits

@TimmyD I've thought about picking up a functional language (I've toyed with it, but never seriously), but I was looking at haskell more than anything else.

flawr

@Geobits Same here=)

mınxomaτ

7:42 PM

Haskell is probably a better choice than F#.

Geobits

I figured with a hybrid, I'd probably lean too much on my OO tendencies.

flawr

True=)

Optimizer

get your microscopes ready!

flawr

Awesome=)

Optimizer

such cruel world

TimmyD

7:46 PM

The other big thing with F#, especially if you're coming from C, is that values in F# are immutable. So, yeah. A+ for predictable code, D- for pulling off neat tricks with it.

Optimizer

also, this is hilarious: distractify.com/animals/2015/11/17/veronica-zoo-expectations (NSFW)

flawr

I like the primates being social one best, I think=)

Optimizer

I liked the panda one. Particularly because I have seen a coulpe more similar videos

flawr

"Pretend nothing happened."

Optimizer

like why do you think pandas are going extinct , and then a panda will be trying to climb up a tree and failing miserably, eventually falling down

Cᴏɴᴏʀ O'Bʀɪᴇɴ

7:53 PM

El'endia Starman

...awww dangit! I should've implemented $m as the reverse of m (merge)! That would've made this so easy!

mınxomaτ

Martin Büttner

@CᴏɴᴏʀO'Bʀɪᴇɴ *without an error you've found.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@MartinBüttner Without an error. I tested it >:D

Calvin's Hobbies

@CᴏɴᴏʀO'Bʀɪᴇɴ Enter enter enter enter enter...

Martin Büttner

7:55 PM

Tests are no formal proof of correctness :P (unless the number of possible inputs is finite).

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@MartinBüttner They are if systematic, testing each general class of inputs.

flawr

@MartinBüttner As I learn in number theory over and over again: finite can still be darn big.

Today in a seminar one of the doctorands showed his new proof to a bound (something related to elliptic curves)

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@flawr g_(g_64)

flawr

and it was like N^(N^((10^26 N)^(N^2 * (log N)^2)))

Where was an integer, but it was unknown wheter N=11 or 13

El'endia Starman

Still smaller than Graham's Number! :P

But yeah, that's preeeetty big. :P

flawr

7:59 PM

Yeah but still more than the number of electrons of the universe=)

El'endia Starman

Planck volumes in the (observable) universe, even.

TimmyD

Arrow notation is mind-boggling

El'endia Starman

aye

Cᴏɴᴏʀ O'Bʀɪᴇɴ

2

SuperJedi224

8:12 PM

Hello

Cᴏɴᴏʀ O'Bʀɪᴇɴ

Hiya

El'endia Starman

8:28 PM

I started brainstorming TI-ACIDIC last night in bed before I fell asleep. I really need to hurry up and finish Minkolang. :P

2

Optimizer

5

TimmyD

@El'endiaStarman TI-AC/DC?

El'endia Starman

@TimmyD No, it's a reference to TI-BASIC. :P

TimmyD

Ah, pH levels. Clever.

El'endia Starman

Someone else came up with it.

Oh yeah, @flawr!

Nov 15 at 18:36, by flawr

How about TI-ACIDIC?

Nov 15 at 18:37, by El'endia Starman

.....maybe I'll call my next language that. :P

Unexpected Shapes (Part 2) - Numberphile

►

...woah. (Watch part 1 first.)

TanMath

8:49 PM

Hey all!

Nobody here?

New Main Posts

-2

Q: Get happy and mad

Requirements You need to make a smiley face go from smiling to frowning and back. There needs to be at least three different faces in the code: Smiling, no expression and frowning. The new face needs to replace the old face flipbook style so that there's only one face on the screen at a time. N...

popularity-contest ascii-art animation

TanMath

Did my first review!

On this website, that is

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