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#FP #arrowkt Λrrow

Updating deeply nested models in Kotlin is a quite a verbose task, but it looks like we can simplify it a lot using ArrowKt library (single annotation from Arrow Optics)

youtube.com/watch?v=VOZZTS…

#AndroidDev #Kotlin

#ArrowKT more #functional programming for #Kotlin by ｢El Paco｣ at #Kotlin ers conf

Cut pairs with empty values from map stackoverflow.com/questions/6691… #option #arrowkt #kotlin

Two weeks ago I published a post about a functional modeling approach to event sourcing. This week I'd like to dig deeper into an example implementation in Kotlin.

dev.to/jakub_zalas/fu…

#functionalprogramming #eventsourcing #kotlin #arrowkt #ddd #ddd esign

而ArrowKt可以將side effect 封裝起來，達到將impure function 轉換為pure function

#kotlin
#arrowkt

Kotlin 從1.3增加的Result<T> 似乎不是這麼好用

失敗只能傳入一個Exception，必且在取用判斷上也很不直覺，所以後來導入either，或是使用ArrowKt的版本

Little show case how to test functional endpoints in #SpringBoot combined with functional validation from #ArrowKt . Preparation for a project we are currently migrating from classical RestController to functional endpoints and have a bunch of little helper functions like that.

Mark the day: 27/10/2022!!
Join me in London for some domain modeling and some Arrowkt - buff.ly/3R5KEHF

Save some money with our 25% off code CWTI_25_DCLDN22
See you there 💂🎡

Spring Boot functional endpoints with #Kotlin #Coroutines , and monadic comprehensions from #ArrowKt . I cannot help myself, but it looks almost like #Haskell 🤔

ArrowKt で Either.fx と ! ってやつが提供されてて、試しに使ってみたらdo記法とbindだった

Functional Programming in Kotlin with ArrowKt: Understanding the Option Data Type buff.ly/3HgHiij

Are you ready?!? One hour to go ⏲

Today with pablisco we will do some more work in the app settings, but also get to talk about #ArrowKt and how useful it can be!

Join us on ctwi.link/twitch at 18:30 CEST / 9:30 AM PDT / 12:30 PM EDT / 22:00 IST 👋

Today at 18:30 CEST / 9:30 AM PDT / 12:30 PM EDT / 22:00 IST we'll have pablisco with us. We'll talk about #ArrowKt , while doing some more work on the app settings.

Don't miss it! We're live as usual on ctwi.link/twitch

What to do on your birthday? Follow chris :: IO ()'s example and hold a talk at JUG Nürnberg. We celebrate his birthday with beer, error handling without exceptions on the JVM ( #vavr , #arrowkt ) and not pizza but paella tonight. 🎉

meetup.com/de-DE/jug-nurn…

Just merged the arrow-fx-coroutines version of the sample code from Functional and Reactive Domain Modeling by Debasish (দেবাশিস্) Ghosh 🇮🇳

Check it out: github.com/arrow-kt/frdom…

#FP #arrowkt #Kotlin #scala

Very good article on how to handle transactions in a Spring Boot application, using Either from ArrowKt.

Spoiler: it’s not straightforward, you may need Exposed.

#kotlin #springboot

towardsdev.com/how-to-deal-wi…

Following my previous post, let’s apply the event sourcing pattern to a functional domain model.

Read more in “Functional event sourcing”:
dev.to/jakub_zalas/fu…

#eventsourcing #fp #functionalprogramming #ddd #kotlin #arrow #ArrowKt

Moved to #fosstodon instance from the social instance.
I am starting a snippet series about
Λrrow
there as an experiment. You can follow my account there, fosstodon.org/web/@vergauwen…

Or the #ArrowKt tag on Mastodon.

Funktionales Programmieren mit Kotlin meetup.com/de-DE/eXXchang… #Kotlin #meetup #arrowKt