Type Classes

Synopsis

Most languages support polymorphism of one sort or another. In the type classes video we will discuss some of the different approaches you will see in different languages, and then introduce Haskell’s method. Then we will go over the functor type class, which allows you to define the higher order function map for any type you want.

Links

Handouts

Videos

• Type Classes
• Functor and Applicative
• Activity Walkthrough (Sprint 2022)

Further Reading

• The Typeclassopedia Read this if you want a broader understanding of type classes.
• Variadic functions in Haskell They used type classes to trick Haskell into allowing us to have functions with a variable number of parameters!