I show how the Maybe datatype and lists can be used to deal with functions that return either zero or multiple values. All code can be found in the course git repository https://github.com/MariusFurter/MAT605-haskell-FS23 00:00 Introduction 00:26 Maybe datatype 04:05 Using lists for partial and multivalued functions 07:53 Lifting functions to Maybe and Lists 14:51 Lifting elements to Maybe and Lists 16:12 Flattening Maybe and Lists The playlist for the course can be found here: https://www.youtube.com/watch?v=0HImO-me_sg