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        Scala with Cats

        Scala with Cats

        About This Book

        Scala with Cats is aimed at experienced Scala developers who want to take the next step in engineering robust and scalable systems. The course teaches five key abstractions of *monoids*, *functors*, *monads*, *monad transformers*, and *applicative functors*, using the implementations in the Cats library. Through a series of projects we show you how these abstractions can be used to engineer solutions to practical problems in data analysis, data validation, input parsing, error handling, and more.

        The main goal of this course is to teach system architecture and design using the techniques of modern functional programming. This means designing systems as small composable units, expressing constraints and interactions via the type system, and using composition to guide the construction of large systems in a way that maintains the original architectural vision.

        The course also serves as an introduction to the Cats library. We use abstractions from Cats, and we explain the structure of Cats so you can use it without fear in your own code base. The broad ideas are not specific to Cats, but Cats provides an excellent implementation that is beneficial to learn in its own right.

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        Your purchase includes free upgrades to future editions.

        Purchasing this book adds you to the Underscore Newsletter, where updates to all Underscore publications are announced.

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