My guess is because a linter and/or HLS was suggesting it. I know HLS used to suggest making your fields strict in almost all cases. In this case I have a hunch that it slightly cuts down on memory usage because we use almost all Muls either way. So it does not need to keep the string it is parsed from in memory as part of the thunk.

But it probably makes a small/negligible difference here.

Of course it’s point-free

True. I love how AoC is a hotbed for creative and/or insane ways of solving coding problems.

If you wanna check out how it goes in Nix: https://git.sr.ht/~kintrix/aoc2024

Java

Nix, because I hate myself. No, it is very much not made for this purpose. But it’s possible to use if for this.

<$> is just fmap as an infix operator.

>>> fmap (+1) [1,2,3]
[2,3,4]
>>> (+1) <\$> [1,2,3]
[2,3,4]

Halfway competent criminals know how to prevent it. But at the same time, I am simply against any and all non-consensual tracking.

I have a similar stance on this as DRM.