A modern programming language that makes developers happier.

kotlinlang

Learn about Error Handling in Arrow, end how to effectively work with Either from the special article written by <@U0RM4EPC7> :point_down:
<https://kt.academy/article/fk-arrow-error-handling>
The complete book by <@U0PQ0GVLM> is available here :point_down:
<https://leanpub.com/kotlin_functional>

about the book
am well versed into functional programming and and writing F# regularly and Clojure semi-regularly so I would buy the book primarily to learn how to use Arrow. not that there is nothing that I can learn about function programming but if I would buy it I would buy it because of Arrow, it’s truly a Kotlin marble. but now with 2.0 coming how relevant will the book be?

Me &amp; <@U028BLB5LG3> wrote a couple of guest chapters on Arrow, but the majority of the book is not about Arrow. The biggest change to FP in Kotlin will be _context receivers_ not 1.x.x -&gt; 2.x.x IMO. There is some good content around talking about this, <https://leanpub.com/fp-ideas-kotlin>

And talks on YouTube as well, <https://www.youtube.com/watch?v=g79A6HmbW5M&amp;t=2225s|Ktor Applications, linked at point where I talk about Arrow + Context Receivers>
<https://www.youtube.com/watch?v=A69_t_oEP_E|Graceful Shutdown with Structured Concurrency Resource Safety + Arrow DSLs>
<https://www.youtube.com/watch?v=2oiRCYnqhDs|Context Receivers Secret Sauce>
<https://www.youtube.com/watch?v=T04ynq2IVFs|Functional Error handling, end shows new patterns>

&gt; Me &amp; <@U028BLB5LG3> wrote a couple of guest chapters on Arrow, but the majority of the book is not about Arrow.
oh I see

Exactly, it is only the guest big chapter, that has been divided into 3 marvelous articles. The rest of the book is connected to Functional Programming in Kotlin.