$ ghci
ghci> :load Exercises.hs
[1 of 1] Compiling Main ( Exercises.hs, interpreted )
Ok, modules loaded: Main.
ghci> -- Work on the exercises and then reload the file using ":r".
ghci> :r
Ok, modules loaded: Main.
ghci>
$ ghci
ghci> :load Exercises.hs
[1 of 1] Compiling Main ( Exercises.hs, interpreted )
Ok, modules loaded: Main.
ghci> -- Work on the exercises and then reload the file using ":r".
ghci> :r
Ok, modules loaded: Main.
ghci>