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OOP for the win
(feddit.org)
It was literally like that. I had a script of about 310 lines and the main function was like 10-20 lines of code. I had a very nice Setup of objects that handled all functionality possible behaviours independent and so my main function was just receiving a user input from another function and add accordingly which included like 3-4 different scenarios that are being handled in the main function.
Haskell also tends to have really small main functions, since the functional paradigm encourages splitting it up