🎄 Day 10
In Elixir
This was a very interesting day. I enjoyed it actually, even tho i struggled with the functional mindset. A few times i just couldnt think of a way to write the code without mutable variables and while loops, but eventually i got it. The code isnt the prettiest, but hey, it works. I still enjoyed Elixir a lot.
The idea behind part 2 was scanning individual rows. If you see a |, youre inside the main loop. If
you encounter it again, youre outside. If you encounter it once again, youre again inside and so
on. This in my mind was a mutable boolean flag that you would switch on and off, so i struggled a
bit making it functional.
There were also corner pipes F, 7, L and J. Those can be handled easily; If the horizontal
pipe line starts with F and ends with 7 (F-----7), the "in loop" flag has not changed. If it
however starts with F and ends with J (F-----J), the "in loop" flag changes.
To run part 1 or part 2, do:
$ make part1
$ make part2