Monad transformers down to earth by Gabriele Petronella

Gabriele Petronella explains what monad transformers are, why they are needed, and how to use them to manage effect stacking in Scala.

This video was recorded at Scala Days Copenhagen 2017 Follow us on Twitter @ScalaDays or visit our website for more information scaladays.org Abstract: Monad Transformers. "WAT?" "Exactly" In this session we'll see what monad transformers are, where their need comes from and how to use them effectively We'll walk through this rather complicated topic guided by real-life examples, with the noble intent of making our code more readable, maintainable and pleasant to work with. Finally we'll see how Monad Transformers are just one of possible tools to solve the "effect stacking" and hint at other possible solutions. WARNING This talk contains slides that some viewers may find disturbing, most of them containing words like "monad" and/or "functors". Listener discretion advised.