A modern programming language that makes developers happier.

kotlinlang

Grrrr.... lower right hand corner != upper left hand corner. Aka "why are all my answers off by 2?!"

It's always very handy to write some JUnit tests through both parts A/B so that you know you haven't broken anything :slightly_smiling_face: - I've started writing them since Day 9, I think :laughing:

Ha! Today I mixed up the `second` and `third` property of a `Triple` in my `maxBy` and got very angry when it kept selecting a window size of 300 as the solution...

Yeah, this is why I write unit tests for the example and my answer when I get it. Because I almost always go back and clean things up or fundamentally change it, like today.

Heh, spent about 30 minutes “debugging” this morning any my error was formatting. Had a space after the comma.

Oh ran into that too. Frankly I would expect AoC to take it with spaces. 