An #OpenSource family of libraries bringing functional and metaprogramming to #Kotlin.

Joined January 2018
117 Photos and videos
Pinned Tweet
20 Sep 2021
Arrow 1.0 - the stable release of #ArrowKT is officially here! - Multiplatform support - Computation expressions - New additions to Fx, Optics, & Meta Massive thanks to EVERY contributor as well as @47deg & @instil! Get all the details here: 47deg.com/blog/arrow-1-0-rel… #Kotlin
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3 Apr 2024
A new Arrow version is out! 1.2.4! 1.2.4 makes a final tweak before 2.0, and fixes 1 bug in a new DSL. #functionalprogramming in #kotlin with Arrow-kt just got a little better again. Thank you all contributors, and supporters ❤️ github.com/arrow-kt/arrow/re…
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29 Feb 2024
Arrow 1.2.3 is out! With many new features, and modules! Full changelog can be found on GitHub, and release post on the website arrow-kt.io/community/blog/2… Next up 2.0.0 with K2 🥳🥳🥳 Thank you #kotlin, and community for your love, support, feedback, and hard work 💪🥰❤️
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Λrrow retweeted
The new 1.2.3 version of @arrow_kt is finally here! With new modules, many new features, read all about it arrow-kt.io/community/blog/2…. Thank you everyone involved, and kudos to the 8 new contributors! #Kotlin 2.x.x will become the new main branch!! (Expect alpha releases soon!)
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Λrrow retweeted
"Congratulations! Your session Unlocking the Power of Arrow 2.0: A Comprehensive Guide has been accepted for #KotlinConf 2024!" 🥳 My KotlinConf streak is continuing, 5th one in a row! I'm looking forward so much to talking #kotlin & @arrow_kt again with everyone. 🥰
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Just finished working on a brand new chapter for the upcoming 3rd edition of my Kotlin Design Patterns book, focusing on the @arrow_kt library 📙 This will be one of the longest chapters in the book, but I hope that readers will appreciate it 😄
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Λrrow retweeted
Just watched your kotlin config presentation, well done such a massive improvements! I would love to see this same presentation youtube.com/live/g79A6HmbW5M… after context reciever and all the improvement you folks had done.
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Λrrow retweeted
Really cool stuff by @riccardo_cardin 👏👏👏 If you like fluent assertions style using AssertJ while using @arrow_kt in #kotlin be sure to check this out! Ready for 2.0 💪
Version 0.2.0 of the assertj-arrow-core library is out! 🚀 Now, you can easily test the Raise<E>.() -> A functions 🤩 github.com/rcardin/assertj-a… @arrow_kt @kotlin
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Λrrow retweeted
Help @arrow_kt to help #kotlin while participating in #hacktoberfest! We need to help and support the Kotlin team in whatever way we can 💪 Arrow is already building with K2, hopefully soon with DEV/EAP versions and experimental targets 🥳
19 Oct 2023
Replying to @arrow_kt
@arrow_kt wants to support #kotlin by building DEV & EAP versions, and producing/testing experimental targets like #wasm. We need your help! There is 12 days left in #hacktoberfest, and 77 open issues so far towards this goal! Check them out here: github.com/arrow-kt/arrow/is…
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Λrrow retweeted
Helping with this would be incredibly helpful to the project. The task is quite concrete: ensure that we can keep testing on -dev versions by minimizing the dependencies on some Gradle plug-ins.
19 Oct 2023
Replying to @arrow_kt
@arrow_kt wants to support #kotlin by building DEV & EAP versions, and producing/testing experimental targets like #wasm. We need your help! There is 12 days left in #hacktoberfest, and 77 open issues so far towards this goal! Check them out here: github.com/arrow-kt/arrow/is…
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19 Oct 2023
@arrow_kt wants to support #kotlin by building DEV & EAP versions, and producing/testing experimental targets like #wasm. We need your help! There is 12 days left in #hacktoberfest, and 77 open issues so far towards this goal! Check them out here: github.com/arrow-kt/arrow/is…

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6 Sep 2023
The Arrow 1.2.1 release is here 🥳 - Kotlin 1.9.0 - New parMapNotNull APIs - Builds with K2 Thanks to all the contributors, and bug reporters! Check out the changelog on Github, github.com/arrow-kt/arrow/re… Check it out for elegant and simple #functionalprogramming in #kotlin
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12 Jul 2023
The Arrow 1.2.0 release is here, featuring: - New APIs for Typed Errors - Improvements to Raise - New NonEmptyCollection interface - Arrow KotlinX Serialization module Read about the changes & plans for 2.0 here: xebia.com/blog/a-new-module-… by @vergauwen_simon and @xebiafunctional

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Λrrow retweeted
An improved transcript of my talk Arrow 2.0's Trajectory #kotlinconf, and slides are available on my blog. nomisrev.github.io/arrows-2-… Had an absolute blast talking about @arrow_kt at @kotlinconf, and the amazing progress of the last 10 years of #functionalprogramming in #kotlin!
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16 Apr 2023
Your cats have good taste, but we'd like to see video proof of their musical talents...We have high hopes.
I'm home and now my cats are actively examining the things that I've brought from Amsterdam. Top-1 was this guitar pick by @XebiaFunctional (it was stolen immediately)
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Λrrow retweeted
Context Receivers are great for @arrow_kt. Revolutionary for FP in Kotlin. The complexity of wrappers can be avoided. #kotlinconf
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Λrrow retweeted
Very detailed update by @vergauwen_simon. I need to update a lot of blog posts 😉🤔 #kotlinconf
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13 Apr 2023
If you're not at @kotlinconf, you can check out @vergauwen_simon covering Arrow 2.0's trajectory here live: youtube.com/watch?v=hXEY0tD4… #kotlin

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13 Apr 2023
Hey, #KotlinConf! @vergauwen_simon will cover Arrow 2.0's trajectory at 11:15 AM in the ADMINISTRATIEZAAL room! #Kotlin
13 Apr 2023
We're stoked for the first day of @KotlinConf! Make sure to stop by our booth and chat all things #Kotlin and @arrow_kt. Also, don't miss @vergauwen_simon and @trupill's talks today! We got swag and a chance to win @DayKotlin tickets! #KotlinConf
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Λrrow retweeted
12 Apr 2023
We've officially started our sold-out Functional Programming in Kotlin workshop using @arrow_kt at @KotlinConf! @francisco_dr is kicking off with domain modeling overviews, and @vergauwen_simon and @trupill are on deck! #Kotlin #FunctionalProgramming #KotlinConf
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