The Nineteenth Byte

7:00 PM

2

I have an ASCII-art box and I need a program to open it. Examples ------- | | |_____| / / / / / / / | | |_____| Specification The first line will only consist of -, at least 3 of them The middle rows will start with | have spaces, and end with | All the mi...

ETHproductions

Why is there a downvote on every single JS-based language on the PPCG programming languages meta post?

I understand JS function golf, but...

Doᴡɴɢᴏᴀᴛ

@ETHproductions Some people find all JSGLs just JavaScript w/ short property names and lots of unicode :(

4

Dennis

There are some people out there who really hate JavaScript.

ETHproductions

Yeah, I can understand that...

Dennis

Why is calculating 31**9846658 so slow? :(

VoteToClose

7:11 PM

...because you're multiplying a hell of a lot.

ETHproductions

9846658 multiplications is bound to take a while...

Dennis

I sincerely hope that Python doesn't implement it that way...

If it does, I'll slap the Python devs with a trout!

4

ETHproductions

How else could it be implemented?

Dennis

Exponentiation by squaring

In mathematics and computer programming, exponentiating by squaring is a general method for fast computation of large positive integer powers of a number, or more generally of an element of a semigroup, like a polynomial or a square matrix. Some variants are commonly referred to as square-and-multiply algorithms or binary exponentiation. These can be of quite general use, for example in modular arithmetic or powering of matrices. For semigroups for which additive notation is commonly used, like elliptic curves used in cryptography, this method is also referred to as double-and-add. == Basic... ==

ETHproductions

Oh yes, that's a much better time complexity

Dennis

7:15 PM

Comparable to the difference between walking on two broken legs and driving a Ferrari.

ETHproductions

I find it hard to imagine that one would be able to drive a Ferrari well with two broken legs.

justaprogrammer

is this even valid: codegolf.stackexchange.com/a/70639/49631

Dennis

If the compiler/interpreter existed before the challenge was posted, yes.

Doᴡɴɢᴏᴀᴛ

Well, isn't a standard loophole?

ETHproductions

@justaprogrammer Technically, yes. The feature existed before the challenge was posted, so there's nothing wrong with it. (The 0-byte program isn't a loophole unless used e.g. to produce no output, e.g. a quine :P)

Doᴡɴɢᴏᴀᴛ

7:24 PM

36

A: Loopholes that are forbidden by default

Zero-length answers Considering an empty program a quine was original in the 1994 IOCCC. Over two decades later, if you can answer a question with an empty program and that question is scored by length (e.g., code-golf) and is tagged as quine, source-layout or restricted-source, just notify th...

Dennis

@Doᴡɴɢᴏᴀᴛ None of the standard loopholes mention wells.

@Doᴡɴɢᴏᴀᴛ That is only for quines and related challenges.

Doorknob

Doᴡɴɢᴏᴀᴛ

oh okay

VoteToClose

That moment when you golf off 40 bytes... then you're sad because Java.

ETHproductions

LOL

I recently golfed 32 bytes off of a 51-byte program

PhiNotPi

7:27 PM

RIP my reading

ETHproductions

Not a Java answer, obviously. I don't believe a non-erroring 19-byte Java program is physically possible :P

Doorknob

Sure it is, as long as you don't mind compiler errors.

undergroundmonorail

would it be okay to write an answer to a question with "noncompeting" clearly marked and then say "this would totally work except that there's no way to input newlines in this language, to test it replace all 10s with 9s and enter the input with each line separated by a tab"? i'm not sure if that would fall under "knowingly posting an answer that doesn't meet the spec" considering that a) it's a fairly small thing b) it's a language limitation

if no one answers by the time i'm done writing it, i'm just going to post it, but i won't be offended if i'm asked to delete it after ;P

Dennis

What language is this?

And which challenge?

undergroundmonorail

pb, codegolf.stackexchange.com/questions/70638/help-me-open-the-box

at some point i need to update the pb interpreter so it gets input with sys.stdin.read() instead of raw_input()

i suppose what i could do is just update the interpreter now and then mark the answer "noncompeting" and say "this requires a version of pbi newer than the challenge"

i think i just talked myself out of having a problem. this is why rubber duck debugging works :P

El'endia Starman

7:45 PM

A dog runs down stairs.

@AlexA.

Cyoce

@El'endiaStarman it does indeed

undergroundmonorail

there are so many things called pb

i just googled "pb github" and i'm not on the first six pages

most of them have to do with golang. i'm not sure why

Dennis

@undergroundmonorail That's probably the best approach.

undergroundmonorail

i think so too. ty

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@VoteToClose You changed your name back? :D

mınxomaτ

7:52 PM

Please don't do this to Donald Trump — steveverrill 2 days ago

Hah!

undergroundmonorail

I know there's a way to check if stdin is a terminal or a file/output of another program/whatever in Python because I've done it, but I forget how. I can't find anything on Google. The only place I know I can find it is my own answer here on PPCG. Don't let anyone tell you this site hasn't helped people.

4

Doᴡɴɢᴏᴀᴛ

^ attempted chat redesign

undergroundmonorail

that's a nice font but other than that all i can see that's different is you made the buttons green

Doᴡɴɢᴏᴀᴛ

@undergroundmonorail Well the background is gone

undergroundmonorail

if you did more than that don't take it as an insult, i don't have an eye for design haha

mınxomaτ

7:54 PM

Chat doesn't need redesign.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@Doᴡɴɢᴏᴀᴛ Please add a function to make images have a little popup if you hover over links in the starboard

undergroundmonorail

ohh i see

GamrCorps

^^

Cyoce

Is my question ready for posting?

New Main Posts

0

Q: Test if a point is in an Icosahedron

Take as input 3 floating point numbers, which represent the x, y, z coordinates of a point. Return a truthy or falsey value indicating whether the point is inside the regular icosahedron centred at the origin, with top and bottom vertices at (0, 0, 1) and (0, 0, -1), and with one of the upper rin...

geometry

GamrCorps

8:05 PM

@Cyoce I think it could possibly get dupe votes, but it looks fine to me.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@Cyoce looks fine

@GamrCorps @Cyoce if someone uses the dupe-hammer, I will use my righteous reopen blade!

GamrCorps

lol

Cyoce

Alright here it is

get ready to defend our honor!

zyabin101

@CᴏɴᴏʀO'Bʀɪᴇɴ And I will use my righteous flag sword!

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@zyabin101 ಠ_ಠ

zyabin101

8:09 PM

@Doᴡɴɢᴏᴀᴛ Where is the user style?

Doᴡɴɢᴏᴀᴛ

@zyabin101 I haven't uploaded it yet but it'll be part of the PPCG design userscript

zyabin101

@CᴏɴᴏʀO'Bʀɪᴇɴ ಠ__ಠ

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@zyabin101 You wanna go, son? ಠ___ಠ

undergroundmonorail

Myth: Python ignores comments. Reality: I just tried to include # Only ask for input the first time X∈[0, ∞), Y=-1 is read in this program and it gives up interpreting it because of the unicode characters. ¯\_(ツ)_/¯

zyabin101

@CᴏɴᴏʀO'Bʀɪᴇɴ ಠ____ಠ

GamrCorps

8:13 PM

ಠ______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ಠ

2

undergroundmonorail

I suppose I can just say X>=0 though

zyabin101

@GamrCorps You broke the sequence!

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@zyabin101 ಠ.ಠ

ETHproductions

"ಠ"+"_".repeat(Math.random()*10000|0)+"ಠ"

zyabin101

@ETHproductions You can't repeat a string a decimal number of times.

ETHproductions