Preface
This is a book for programmers in the trenches who want to learn how to use functional programming languages to get real things done. As such, I will not spend any appreciable time on the more theoretical aspects of functional programming such as Monads, Monoids, Functors, Categories, and so on. Not that these ideas aren’t valid, valuable, or relevant; rather, they do not often impact the day-to-day world of the programmer. This is because they have already been “baked into the cake” of the common languages, libraries, and frameworks. If you are interested in functional theory, I recommend the writings of Mark Seemann.
This book is about how—and why—to use functional programming in our day-to-day effort to build real systems for real ...
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