In this meetup we discuss the new features of Arrow Fx to write “effectful” programs with an emphasis on simple and declarative programming for everyone. Additionally, we see how Arrow Meta works and how we can use it to improve the ergonomics of Functional Programming in Kotlin.
- December 19, 2019
Arrow Meta - Enabling Functional Programming in the Kotlin Compiler
Arrow Meta is a library that empowers library and application authors with the ability to write plugins for the Kotlin compiler. Compiler plugins have access to all compiler phases and can intercept and modify the AST, descriptors, and IR intermediate lang for bytecode generation.
- October 18, 2019
Effect polymorphism with Arrow FX
Wonder how to handle side effects in a very clean way while abstracting the real effect implementation? #Arrow #FX provides an easy way to do this, without the burden of Higher-Kinded Types.
- July 22, 2019
Self-contained example of testing with modules and Arrow FX
This post shows a porting with Kotlin and Arrow FX of a self-contained testing example with Scala ZIO
- July 05, 2019
Modular functional programming with Kotlin
This post proposes a possible solution in order to structure and compose a pure functional Kotlin application, in order to better manage and decouple modules, get simpler tests and manage the Dependency Injection at compile time.
- July 02, 2019
Kotliners 2019 - ArrowFx Functional Programming for the masses
In this talk we recap about the imminent future of Functional Programming in Kotlin. With ArrowFx you are able to encode “effectful” programs in a controlled way following the FP principles through a direct syntax. You’ll think you’re writing imperative code!
- June 07, 2019
How KEEP-87 & Typeclasses will change the way we write Kotlin
Short introduction into the proposal KEEP-87 and how it would be able to improve the language.
- June 04, 2019
Immutable Conversations - Past and Future of Arrow
In this episode, we capture a conversation between Arrow maintainers Raúl Raja and Paco Estevez as they discuss the past and future of the library which is designed to bring Functional Programming to Kotlin.
- March 12, 2019
From Imperative to Functional Programming using Arrow
As its name implies, From Imperative to Functional Programming using Arrow is a tale about migrating a simple Kotlin application written in imperative style to a fully function application with the help of the Arrow library.
- February 10, 2019
Webflux with Kotlin and Arrow
Webflux with Kotlin and Arrow shows how you can use Arrow together with Spring Webflux to create a reactive REST application. This article explains how to use the
MonoK and the
FluxK Arrow extensions together with the
binding function to make working with the
Flux reactor constructs much easier and better understandable.
- February 03, 2019
Getting started with FP in Kotlin and Arrow: Typeclasses
Getting started with FP in Kotlin and Arrow: Typeclasses explores part of the Arrow library by explaining how you can use Arrow to create your own typeclasses and use the ones provided by Arrow to make your code more concise and better readable.
- January 03, 2019
Functional Hangman Game written with Arrow
Functional Hangman game - console application written with Arrow. Uses the
IO<A> monad to push side effects to the edge of the system.
- November 30, 2018
Manual documentation is dead. Long live automated documentation! Automated documentation with ΛNK
It includes how the ΛNK plugin works: from having a tool that evaluates and verifies your doc snippets at compile time, to generating code documentation that is always correct and up to date.
- droidconSF, San Francisco
- November 24, 2018
Architecting Typed FP Applications & Libraries in Kotlin with Λrrow
This talk includes a comprehensive walkthrough of the most important patterns covered by the data types and type classes we find in Λrrow. Each pattern will be accompanied by code examples that illustrate how Λrrow brings Typed Functional Programming to Kotlin.
- KotlinConf, Amsterdam
- October 05, 2018
Arrow and Functional Programming for Kotlin Developers
A beginner level introduction to Functional Programming for Kotlin and/or Android Developers or developers with OOP background.
- DroidJam India, Bangalore, India
- July 24, 2018
Functional Programming in Kotlin with Arrow by Emmanuel Nhan
@nhanmanu introduces Kotlin and how it is a good fit for functional programming. The talk goes through some interesting features of Kotlin, then show how to use them to enter the world of Higher Kinds and Typeclasses. In the last part, we explore some Arrow capabilities & built-in syntax, using validation as an example.
- Sunny Tech, Montpellier
- June 27, 2018
State of the functional ecosystem in Kotlin: Mid 2018 checkup
This talk focuses on the day-to-day problems Arrow solves, from small ideas to big concepts.
It includes an overview of all the modules available, and some of the 3rd party libraries made by the community.
- Conference for Kotliners, Budapest
- June 24, 2018
Arrow 101 - Building an Android app using Functional Programming
Leandro Ferreira presents how to build a simple app using Arrow and how to implement solutions with Semigroups.
- June 24, 2018
Higher Kinded Types in a Lower Kinded Language by Jacob Bass
It’s hard coming back down to the earth of a JVM based language after spending time with Haskell and OCaml. This talk will discuss functional programming in Kotlin with the Arrow library, how the abstractions it provides can improve your code, and how this magic that provides higher-kinded types works under the hood.
- Yow! Lambda Jam, Sydney, Australia
- June 22, 2018
Introduction to Kotlin Arrow by Jacob Bass
@bassjacob goes through how Funktionale and Kategory merged into Arrow, consolidating two of the most popular FP libraries in the Kotlin space into one powerhouse. The talk is an introduction to some FP concepts, how the libraries work, what features they bring to the table and where you might use them in your code.
- Kotlin Meetup, Sydney
- March 26, 2018
It's all about morphisms
@uberto gives a gentle introduction to Category Theory for programmers used to OOP but interested in Functional Programming. No Haskell knowledge required. We will explain main concepts behind functional programming with many diagrams and simple metaphors and examples. Some code will clarify how to translate these ideas in programs.
- Voxxed Days, Vienna
- March 21, 2018
Optics and Type Classes in Arrow
@msya explains how to use various optics and type classes in Arrow. He discusses optics such as
Iso. He also goes over the purpose for type classes and how KEEP-87 will make it easier to implement them.
- Kotlin Brooklyn Meetup
- January 17, 2018
Functional Programming in Kotlin with Arrow
A rundown of all the features included in the library, focusing on implementation details.
- Lambda World, Cádiz
- November 29, 2017
Building a DSL… in Kotlin
Make DSLs stack safe, composable and reusable under different runtime requirements thanks to Arrow.
- droidconSF, San Francisco
- November 24, 2017
Architectures Using Functional Programming Concepts
Introductory talk to Functional architectures to be built on top of Arrow.
- KotlinConf, San Francisco
- November 17, 2017
Kotlin for the Pragmatic Functionalist
An introduction to Arrow and the enhancements it brings to Kotlin’s standard library.
- KotlinConf, San Francisco
- November 09, 2017
Functional Programming in Kotlin
An ongoing blog series introducing Functional Programming architectures from scratch
- November 02, 2017
Functional approach to Android architecture using Kotlin
Move side effects to the edges of the system, implement a functional oriented architecture for Android apps based on purity.
- Mobilization 7, Łódź
- October 20, 2017
Handling exceptions in Arrow
- September 17, 2017