A journey from statistics computations to composable streaming folds.

Come join me and learn by example about the beauty of generic folds and streaming data. I'll be revisiting these concepts, talking about its origins in Haskell and demonstrating the power of them by showing an example of a program that runs statistics computations using the Fs2 and Origami Scala libraries.

Inevitably, I'll also be talking about performance, concurrency, parallelism and some type classes such as Foldable, Applicative and Monoid, you won't be bored!

Since the first introduction of [Cats Effect](https://typelevel.org/cats-effect/) many things have changed taking its design and performance to a whole new level.

Come join me and learn how to deal with side effects in a pure functional way while abstracting over the effect type and taking composition to the next level. We will review the most important features such as synchronous and asynchronous computations, error handling, safe resource management, concurrency, parallelism and cancellation starting by reviewing the basic concepts.