Reading List for F# Learning

There are several books and other resources to learn F# and when someone wants to start looking at the language, one of the first questions is which book to use. I don’t think there is a straight answer mostly because of two main reasons. First, there isn’t a single book that outshines all the others. Although there are some really good books, they actually complement more each other. Second, people have very different backgrounds, motivations and learning styles. And this actually influences how someone gets the most out of a book. For these reasons, I don’t think there is a single book to learn F# from but probably several. At least that’s what it worked best for me and I’m still discovering the language. From all the F# books I managed to get my hands on here’s my view on them and how they can be used to learn the language.

The Must Haves

To start I recommend Programming F# 3.0 by Chris Smith. The book is very well written and as a first introduction to F# it does the job very nicely. It is composed of three parts. The first part deals with all the fundamentals and then proceeds to teach the language in three main programming paradigms (functional, imperative and object-oriented) and ends with a chapter on .NET programming. This gives you a solid foundation on the language. The second part of the book builds on the first one, i.e., advanced topics on functional and object-oriented programming but also other important topics like Asynchronous and Parallel Programming, and scripting using F#. The last part deals with the truly advanced features of the language, such as Type Providers, Computation Expressions and Quotations. However, although the book is very good to learn the basics and the intermediate parts, the advanced stuff seems light.

And this is the reason I believe a good complement to this book is Expert F# 3.0 by Don Syme, Adam Granicz, Antonio Cisternino. In other words, after you finish Part I/II of Chris Smith book, it’s good to start looking at Expert F# in parallel since it contains a much larger selection of topics and goes more in depth in many things. This book offers much more practical examples of F# (for example, web and mobile development, numerical programming) and it clearly shows how to use the advanced features of the language. Moreover, it also contains chapters on topics which are also important, for example, how to organize your code, libraries and inter operating with other languages, packaging, debugging, designing libraries, etc. I find this book a must in your library. Personally, the minus of this book lies exactly with the initial chapters. I believe Programming F# is much better at the basics and offers a better overall overview of the language than Expert F#. These two books complement each other very well and should be more than enough to start with F# from total beginner to advanced user. It also fits well to people with different backgrounds and level of knowledge (e.g., functional programming).

In short, these two books are more than enough to learn the language and get to an intermediate level quickly.

Extra Reading

Another book that I like a lot is F# for C# Developers by Tao Liu. Don’t let the name fool you and assume this book is more suitable if you’re a C# programmer. The book is also divided into three parts and the first one is about learning the language. As the title implies, it’s directed towards someone who has a C# background. Which is fair enough. However, the next two parts of the book are the real thing. Part II dedicates itself mostly to Type Providers and other advanced features of F#. The coverage of type providers is great! The third part concerns with Real-World applications of F#: how to create an F# Portable Library and develop a Windows Store Application, web development using WebSharper, Cloud and Service programming and GPGPU. Interestingly, this book has some sort of hidden gem. Strating at page 392 and ending in page 455, the book contains code in F# of several algorithms. From sorting, tree structures and common algorithms, string operations, graphs and CSP. All of this is not even mentioned in the table of contents!

A small book but which was a nice surprise is F# for Quantitative Finance by Johan Astborg. The book is small but it contains a very nice quick introduction to the language. Again, the book is worth for the follow up material. In this case, using the main topic of Quantitative Finance the author explores topics which might not be covered so well in other books. I found it very nice to include Math.NET numerics, data visualization and how to implement lots of algorithms in F#.

Another small book that could be of interest is Building Web, Cloud, & Mobile Solutions with F# by Daniel Mohl. I personally have mixed feelings about this book. First, the book is not suitable for F# beginners: you must already be comfortable with F#. The title and topics are interesting especially for someone who is a beginner in any of them. Still, the book advances and presents the topics in such a way that it feels that you must know very well all the topics which at some point you wonder how useful the book is. Still, I can still some value in it and since it touches several non-standard topics, it’s worth taking a look.

Advanced Reading

Finally, two books which I believe are also a must have but fall into the advance material section. The first one is Real-World Functional Programming by Tomas Petricek with Jon Skeet. This was actually the first book on F# that I bought but I must confess it was a mistake to use it as a first book to learn. Although the book is very good, I consider it advanced material. It explains lots of concepts and shows them in F# and C#. It’s very good to know more the ins and outs of the language and how to do functional programming in .NET. The problem is that this is not a good approach to learn a language. I can imagine some people might like this style but I personally don’t. I started to appreciate this book after some coding under my fingers.

The second book, I must confess, I didn’t read it yet since it just came out. It’s F# Deep Dives by edited by Tomas Petricek and Phillip Trelford. I only read the sample chapters but from the table of contents and samples, it looks good and another required advanced reading. Sergey Tihon wrote a review of the book.

Other Books

There are more books about F# but everything above is what I think it’s good to read to learn the language and have a good knowledge of what it can be done (and how!). There are some other books that are already outdated and others that don’t add much. For example, The Book of F# by Dave Fancher has an interesting format but I don’t think it adds much to the previous ones.

Finally, the best way to learn a language is to use it :-)

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