Dealing with external effects building a pure functional api using Scala is an interesting topic in the context of pure functional programs design. Today there are great frameworks four developing your external interactions apis like Cats Effect or ZIO, to name a few. However, it is recommendable for developers that want to work with pure IO to become familiar with the concepts that I will explain in this post.

Case

Imagine a groupedWithin operator that pushes downstream a mini-batch of data in a List[A] in every interval of t seconds. For each element of this collection it is necessary to execute…

Emiliano Martinez

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