My little mind was blown again while working on day 5 of AoC. I was working on generating intermediate points between the start and end of horizontal and vertical coordinate and was noodling with an inclusive range `⊣↓∘⍳1+⊢`.
Accidentally applied it to the coordinate pairs directly and it generate all the pairs between them! Coolest thing I've seen thus far. It makes my implementation dog slow, but I thought it was too neat to refactor.