Channels
#advent-of-code
- k
karelpeeters
12/10/2017, 1:26 PMAh I couldn't figure out how to get
to work, thanks!.reduce(Int::xor) - m
menegatti
12/10/2017, 1:26 PMyeah, took me a while - m
menegatti
12/10/2017, 1:27 PMglad to help 😄 - m
menegatti
12/10/2017, 1:28 PMmy favorite method of the day is definitely
... it just saved us from such a hasslechunked - k
karelpeeters
12/10/2017, 1:28 PMI actually had
at first..windowed(16, step = 16) - k
karelpeeters
12/10/2017, 1:29 PMI also though
existed already, but that was just the example on this page: https://kotlinlang.org/docs/reference/extensions.html#extension-functionsswap - m
menegatti
12/10/2017, 1:30 PMwhen looking at the documentation, the first thing I saw was
but thewindowed
felt unnecessary. good thing they thought about that specific use casestep - a
andyb
12/10/2017, 1:36 PM@karelpeeters The implementation of
actually callschunked
under the hood anywaywindowed - a
andyb
12/10/2017, 1:37 PM@menegatti think I must have got lucky with my output. Will replace with my own implementation of toHex() 🙂 - k
karelpeeters
12/10/2017, 1:37 PM
yikes, you'd think partialwindows waswindowed(size, size, partialWindows = true)
by defaut.false - k
karelpeeters
12/10/2017, 1:38 PMWhat,
? Isn't that taking it a bit too far 🙂?fun Int.toHex() = "%02x".format(this) - a
andyb
12/10/2017, 3:16 PM@karelpeeters, fair call 🙂 I love just how terse the Kotlin code is and yet it is still so readable.👍 1 - t
todd.ginsberg
12/10/2017, 6:29 PMI love coming in here and seeing how everybody solved the day's problem. I keep away until I've pushed my code and blog post about it. Today took me a while because I had a hard time following part two, but managed to get it. - t
todd.ginsberg
12/10/2017, 6:30 PMAnd yeah, `chunked`/`windowed` is so nice to have in 1.2.➕ 2 - j
Jan Vomlel
12/11/2017, 12:04 AMToday only part1: https://github.com/JanVomlel/advent2017/blob/master/src/Day10.kt - k
karelpeeters
12/11/2017, 12:07 AMNow that is an elegant approach! A linked circular list! - t
todd.ginsberg
12/11/2017, 12:33 AMNice approach! - k
karelpeeters
12/11/2017, 7:33 AMUsing cube coordinates and a simple formula for the distance. - a
andyb
12/11/2017, 8:16 AMDecided to treated hex grid as if it was 3D as it makes the maths much easier. This resource is v useful: https://www.redblobgames.com/grids/hexagons/ - k
karelpeeters
12/11/2017, 8:18 AMAh I forgot about
, dammit.fold - a
andyb
12/11/2017, 8:29 AMI love
but I tend to overuse it, e.g. yesterday when I usedfold
rather thanfold
to apply thereducexor - k
karelpeeters
12/11/2017, 8:41 AMAh, right. Today was a perfect use case of course! - a
andyb
12/11/2017, 9:00 AMI missed Python's
function which is a sort of hybrid betweenaccumulate
& `map`so that you get a list of results by applying a operation to the previous result. So in the end I implemented it myself.fold - a
andyb
12/11/2017, 9:02 AMI could of used that today so that it generated a list of positions that you had visited and then could get the max(distance) across this list. - m
menegatti
12/11/2017, 9:49 AMCube coordinates here as well - a
andyb
12/11/2017, 9:50 AMNice diagram, I'm 'borrowing' that👍 1 - m
menegatti
12/11/2017, 9:51 AMMight be a good idea to extend the central divider between NE and SE? - m
menegatti
12/11/2017, 9:52 AMlooking at the general stats, I was a bit surprised that most of the ones that start a challenge finishes part 2 as well - m
menegatti
12/11/2017, 9:53 AMI know one solution builds on the other, but I’d expect some would just drop the part 2 since “I solved the challenge already"