What the Functor? | Functors in Scala | Rock the JVM
14:01
Objects and Companions in Scala | Rock the JVM
26:45
Idiomatic Error Handling in Scala | Rock the JVM
22:27
Value Classes in Scala | Rock the JVM
21:08
What the Heck Are Monads?!
13:31
Covariance and Contravariance
35:00
Cats with Scala: Essential Type Class Hierarchy, Explained
16:24
Contravariance in Scala: Why Is It So Hard? | Rock the JVM
19:21