Me too. I’m not particularly proud of all my code but it’s a fun diversion. I’m curious what other people came up with for day 8; seems like a place where many features of julia can really shine (metaprogramming, generic functions, interfaces) but I found it to be surprisingly tricky to get the syntax right for building expressions with :() and ended up just using Expr everywhere: https://github.com/kleinschmidt/advent-of-code-2017/blob/master/day08.jl