Abstracting Main

2023-06-01

While creating the game loop for a TicTacToe program, I noticed something interesting: my main function reads like it could be the main function of any sort of board game. For example, without changing main, we could redefine all the functions that are called and create a chess program.

(defn -main [& args]
  (loop [board empty-board]
    (display-board board)
    (if (win? board)
      (display-winning-message board)
      (recur (play-move board (get-user-move))))))

This is the level of abstraction we are looking for when creating an architecture such that every module is a plugin.