Each December, Eric Wastl publishes Advent of Code, a series of programming puzzles. These are my solutions to the 2017 puzzles, written in F#.
Note: if you are wondering what the =! operator is in each of my solutions, this comes from Swenson Unquote. It's an assertion, and I use it to verify that my code produces the correct output for each of the example inputs in the problem description. I use it because when an assertion fails, it will automatically report exactly what expression failed, and how. (It uses F#'s expression system to inspect the assertion, enabling it to provide detailed errors.)