Media

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Android architectures with Arrow Fx

  • May 06, 2020

May 2020 Online Kotlin Meetup

Daniel Montoya Ramos - Senior Software Engineer @47deg Android Jetpack Compose

Dani will show a new way of building UI’s in Android using Jetpack Compose, comparing Imperative vs Declarative approaches. He’ll look at managing state changes, composing functions as well as some of the gotchas and wishes for the future.

Alberto Ballano - Senior Software Engineer @47deg Android architectures with Arrow Fx

Alberto will talk about typical Android architectures, and how can they benefit from Functional Programming techniques available in Arrow.

Arrow Fx
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IO integration with kotlinx.coroutines

  • March 02, 2020

This article showcases the brand new Arrow integration module for KotlinX Coroutines included in the Arrow 0.10.5 release.

Arrow Fx
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FP with Kotlin/Arrow: Monad Comprehensions & Parallel Processing

  • February 26, 2020

Arrow has multiple libraries available for functional programming. In this talk we’ll focus on Arrow FX and learn how to handle IO in a functional way with an introduction to monadic composition. Then we’ll examine how to compose monads in a cleaner fashion with Arrow FX’s monad comprehensions. Finally, we’ll take a look at how to parallelize IO monads with parallel map strategies.

Arrow Fx
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Kotlin Functional Programming: Parallel Processing The Functional Way with Arrow Fx

  • January 29, 2020

Learn how to handle parallel processing in Kotlin with Arrow IO monads.

Arrow Fx
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Kotlin Functional Programming: Monads & Composition with Arrow Fx

  • January 29, 2020

Arrow is a library created by folks over at a company called 47 degrees . In a nutshell, Arrow brings a slew of functional programming features to Kotlin. It is heavily inspired by Scala and Haskell, and emphasizes a lot of the concepts that those languages started

Arrow Fx
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Kotlin Functional Programming: Cleaner Composition with Monad Comprehensions in Arrow Fx

  • January 29, 2020

Learn how to write cleaner monadic composition in Kotlin with Arrow’s monad comprehensions, available in Arrow FX.

Arrow Fx
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Arrow Comonad Approach for GameOfLife with Android Compose

  • January 14, 2020

The purpose of this article is complement the bow + SwifUi solution for the game of live we can find here https://www.47deg.com/blog/conway-swift/ with the arrow + compose version.

Arrow Fx
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Kotlin coroutines with arrow-fx

  • December 15, 2019

The purpose of this article is to summarize the approaches from questions at Slack about the usage of Either, Option and other datatypes and to give a tour of arrow-fx usage and APIs.

Arrow Fx
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Conway's Game of Life using Kotlin and Arrow

  • December 12, 2019

An article of a series on Functional Programming solutions for the Global Day of Coderetreat challenge. In this case, it shows an approach for it using Kotlin and Functional Programming provided by the Arrow library.

Arrow Core Arrow Fx
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Arrow Fx & Arrow Meta - Functional Programming for the masses

  • Functional JVM Meetup, Prague
  • November 27, 2019

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.

Arrow Meta Arrow Fx
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Effect polymorphism with Arrow FX

  • July 22, 2019

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.

Arrow Fx
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Self-contained example of testing with modules and Arrow FX

  • July 05, 2019

This post shows a porting with Kotlin and Arrow FX of a self-contained testing example with Scala ZIO

Arrow Core Arrow Fx
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ArrowFx: Functional Programming for the masses

  • Kotliners, Budapest
  • June 07, 2019

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!

Arrow Fx
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Immutable Conversations - Past and Future of Arrow

  • March 12, 2019

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.

Arrow Core Arrow Fx
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From Imperative to Functional Programming using Arrow

  • February 10, 2019

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.

Arrow Core Arrow Fx
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Webflux with Kotlin and Arrow

  • February 03, 2019

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 Mono and Flux reactor constructs much easier and better understandable.

Arrow Core Arrow Fx
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Getting started with FP in Kotlin and Arrow: Typeclasses

  • January 03, 2019

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.

Arrow Core Arrow Fx
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Functional Hangman Game written with Arrow

  • November 30, 2018

Functional Hangman game - console application written with Arrow. Uses the IO<A> monad to push side effects to the edge of the system.

Arrow Core Arrow Fx
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Arrow Tiny Cards Flashcards

  • November 15, 2018

Arrow-kt collection: data types, type classes, effects, optics, generic, free, recursion schemes.

Contact Ersin on Gitter or Slack if you have more concise/simpler definitions, can correct misinterpretations, or can help with a deck.

Arrow Core Arrow Optics Arrow Fx Arrow Incubator
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Architecting Typed FP Applications & Libraries in Kotlin with Λrrow

  • KotlinConf, Amsterdam
  • October 05, 2018

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.

Sources and slides

Arrow Core Arrow Fx
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State of the functional ecosystem in Kotlin: Mid 2018 checkup

  • Conference for Kotliners, Budapest
  • June 24, 2018

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.

Arrow Core Arrow Optics Arrow Fx Arrow Incubator
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Arrow Docs

  • August 01, 2017

Take a look at the Λrrow documentation Here. Test and modify real-time code snippets.

Arrow Core Arrow Optics Arrow Fx Arrow Incubator Arrow Meta

Books

Recommended reading for learning Functional Programming in Kotlin from Arrow maintainers, users, and the Kotlin ecosystem: