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How well do you know your fundamental operators in different languages? ‘Easy’ examples help to fortify that knowledge, and comparing across languages makes for some neat implementation detail discoveries.

I’m solving Advent of Code this year using a relaxed criteria compared to last year in that I’m allowing myself to use packages where they’re helpful, rather than strictly base R. Last year I re-solved half of the exercises using Rust which helped me learn a lot about Rust. This year I’m enamored with APL, and I wanted to share a particularly beautiful solution.

If you’re reading this hoping that I’m done with droning on about array-languages, close the tab… it only gets worse from here. If you thought APL was unreadable, even after my earlier blog posts, again - close button is right there. In this post I try out a brand new stack-based array language and continue to advocate for learning such things.