The Little Elixir & OTP Guidebook

Intermediate to advanced book on Elixir with main focus on fault tolerance through supervisors and on concurrency. Example are worked through in great detail. Friendly informal writing style that sometimes annoys me personally ("Sweet!") losing one star but not a deal breaker as ultimately the material is covered well. Get Dave Thomas' book also if you need an intro with this one to go deep into OTP.Edit: while the style did annoy me in places - I decided that removing a star was harsh so I'm giving it back - especially because I just read the last chapter on Property Based Testing which is new to me and very interesting so that's worth the star back.

I like this book a lot because it doesn't mess around trying to soft-step for the Ruby and Python people. It's quite full on, but the great thing is it dives right in to processes by Chapter 3, where other books take an eternity to go through all the possible permutations of the single-process use cases before getting to the very purpose of why you were attracted to BEAM in the first place. I have all the Elixir books and along with Sasa Juric's book this is my favourite.

Great book, on time all good.

What an excellent book!! And excellent technology! I love it. I read it all, and then re-read several of the chapters. I worked through many of the examples on my computer, as well.Most Elixir books focus on Elixir, but this one stands out for focusing on OTP. The author's style is fun, and enjoyable to read. I am pleased to see Benjamin Tan Wei Hao is publishing another book now (on Ruby closures), and I hope he continues to author more. He has a gift for writing.A mild complaint was that when he presents Supervisors (he implements a worker-pool application, where there are a finite number of workers available as resources), almost all the processes are named the same. For example, there is a "Pooly.Supervisor" and a "Pooly.PoolsSupervisor" and a "Pooly.PoolSupervisor", and a "Pooly.WorkerSupervisor", and a "Pooly.PoolServer". A little more thought into unique names would have made that example easier to follow, in my opinion. But, it's fine. I was able to follow along anyway.An extra bonus are the last 2 chapters. In chapter 10 he dives into Dialyzer and type specifications. And in chapter 11 he examines non-conventional testing tools for Elixir -- in particular, he works through some examples of property-based testing with QuickCheck, and concurrency testing with Concuerror. Those chapters are gems to read through, as such documentation is hard to find elsewhere at the moment, and those tools are powerful.I suggest reading this as a 2nd book on Elixir. He does fly through Elixir really quickly (in 2 chapters), but you'll probably want to read an introductory book on Elixir first (I enjoyed "Programming Elixir 1.3").

Excellent book! Elixir is a great language, and the author creates a very digestible approach to the language and framework. You can go into it knowing only the very basics of Ruby and functional programming, come out of it capable of building applications in Elixir with OTP, and never be overwhelmed or bewildered.

I have several books on Elixir and this is by far the best, most succinct one.

Well-written, the coverage of OTP comes earlier and with more focus than most of the other Elixir books.

Clear, concise and to the point. Not unnecessarily complicated. Great book.