F# is a cross-platform functional programming language supporting .NET, Mono, HTML5 and GPU programming. Functional code returns consistent and predictable results, making it easier to test and reuse, simpler to parallelize, and less prone to bugs. F# has been part of Visual Studio since VS 2010, and has been deployed in a number of production systems. F# and the functional programming style simplifies the development of secure financial engines, machine learning algorithms, and scientific calculations, and creates a high-performance platform for collaborative web applications, games, and other types of applications.
F# Deep Dives presents a collection of real-world F# techniques, each written by expert practitioners. Each chapter presents a new use case where you'll read how the author used F# to solve a complex problem more effectively than would have been possible using a traditional approach. You'll not only see how a specific solution works in a specific domain, you'll also learn how F# developers approach problems, what concepts they use to solve them, and how they integrate F# into existing systems and environments.
I liked the book in general. It shows some interesting usages of F# in different contexts. The book is written by different authors and because of that the writing style and the quality are different from chapter to chapter.
As an anthology, it's not surprising that the quality of this book is all over the place. There are one or two chapters that I really enjoyed, and others I found less stellar.
The best contribution, in my opinion, is Evelina Gabasova's "Understanding social networks," which was both enjoyable and enlightening.
There are other good contributions as well, but Evelina's stood out when I did the technical review for the book.
If you're interested in F#, you should pick up this book, as it hits the ground running, assuming that you already know the language and are interested in seeing how it can be applied.