Cats Effect 3.0.0

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Author: Typelevel Contributors

Cats Effect v3.0.0 is finally here …

Cats Effect is a high-performance, asynchronous, composable framework for building real-world applications in a purely functional style within the Typelevel ecosystem. It provides a concrete tool, known as “the IO monad”, for capturing and controlling actions, often referred to as “effects”, that your program wishes to perform within a resource-safe, typed context with seamless support for concurrency and coordination. These effects may be asynchronous (callback-driven) or synchronous (directly returning values); they may return within microseconds or run infinitely.