I got so into finally starting advent of code I didn’t notice the time 
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Ruby! I was tempted to do it in Elixir again but I’m super busy at work at the moment and just wanted to enjoy the puzzle rather than improve my knowledge of Elixir. And Ruby is such a joy!
I like that approach. I'm not doing it this year but last year I tried it in Go and did not have fun 
Maybe next time I'll do it it'll be in something nice like Kotlin
