Hey folks, I’d like to share KUnion, a micro-library which provides an ADT to represent discriminated union types in kotlin. Any review/feedback is welcomed!

Kotlin Coroutines Flow is a much simpler concept than most of us think. Do you agree? See this article, where @marcinmoskala will show you, in simple steps, how to Implement the

Flow

interface and

flow

builder by transforming a lambda expression. 📖 https://kt.academy/article/cc-understanding-flow

Just released roboquant version 1.5.0 (https://github.com/neurallayer/roboquant). It is an algo-trading platform written in 100% Kotlin. Besides using it as a normal library, there is also the option to develop interactively in Kotlin Jupyter Notebooks. You can see some of the charts over here https://roboquant.org/charts.html. If you interested in trading & Kotlin, feel free to reach out!!!

Release v1.0.0 of Atrium is out 🎉 https://github.com/robstoll/atrium/releases/tag/v1.0.0 Thanks to all contributors which helped bringing Atrium to this point since 2017 💯 👍 I also updated the Code Documentation website: https://docs.atriumlib.org/ where 1.0.0 was generated with latest dokka Please share and don't hesitate to give feedback.

Hello everyone! I would like to introduce you to Kim, a *K*otlin *i*mage *m*etadata library for KMM: https://github.com/RealAshampoo/kim Kim is a Kotlin Multiplatform reimplementation of the metadata functionalities found in Apache Commons Imaging. Although it is still in its early stages, we have already integrated it into our own KMM app, Ashampoo Photos, and have been utilizing it in a production environment. Currently, it supports metadata reading and writing for JPEG and PNG formats. Please take a moment to explore the library and kindly share your feedback! 😊 We would also be delighted if you would like to contribute. Thank you for your interest and support!

Advent of Code 2022 in Kotlin: Announcing the Winners Advent of Code in Kotlin We are incredibly grateful to the hundreds of people who participated in Advent of Code in Kotlin this year! It was an absolute joy to solve the fun, holiday-themed puzzles every day from December 1 to December 25. JetBrains and the Kotlin team have participated in the event for several […]

Bonjour to all Gradle users… but especially for Android devs who have been taught to “_configure your build_”. You are missing out if you see Gradle as something you configure, but instead of using XML like Maven, you use strange

someBlock { ... }

The mindset shift : You don’t configure Gradle, you program it! … in Kotlin of course Learning to program your build takes time initially, but much better than countless spending hours debugging your build if you don’t learn Gradle https://blog.kotlin-academy.com/weeks-of-debugging-your-build-can-save-you-hours-of-learning-gradle-348de387c12c

Hello Kotlin Community Members, We recently released the ArcGIS Maps SDK for Kotlin, which allows you to build sophisticated mapping and location-based apps. This is a Kotlin-first reimagining of our successful Java-based Android SDK that we released in 2011, and lets our customers take full advantage of Kotlin’s language features including coroutines, flows, default parameters, higher-order functions and null safety. Some of the highlights of the SDK: it works online or offline, in 2D or 3D, with sophisticated geospatial data rendering. You can build apps that include data collection, data editing, routing, navigation, geocoding, spatial analysis, and indoor and outdoor blue-dot experiences. At Esri we build GIS, mapping, and location tools and technologies, collectively known as ArcGIS, which governments, organizations, and communities around the world use to help understand the world we live in. We built the ArcGIS Maps SDK for Kotlin so that developers can create the very best Android mapping apps for their users. Any feedback is appreciated. Thank you.

Major updates with many components in JetPack Compose. Check it out. https://github.com/SimformSolutionsPvtLtd/SSComposeCookBook

KVision 6.4.0 is out, with support for Bootstrap 5.3.0 and dark mode https://github.com/rjaros/kvision/releases/tag/6.4.0

Let's learn how can we use retry and distinct on Kotlin Flow with @marcinmoskala. 📖 https://kt.academy/article/cc-retry-distinct.md This is a chapter from the Kotlin Coroutines book available in paperback and ebook. 📕 https://kt.academy/book/coroutines

Decomat 0.0.2 is out. Decomat is a library that allows you to do deep-nested Scala-style pattern matching in Kotlin. Version 0.0.2 allows you to create custom patterns similar to Scala's unapply function:

// Scala Style Unapply function:
sealed trait Name
case class SimpleName(first: String, last: String) extends Name
case class FullName(first: String, middle: String, last: String) extends Name

object FirstLast {
  def unapply(name: Name): Option[(String, String)] = name match {
    case SimpleName(first, last) => Some(first, last)
    case FullName(first, _, last) => Some(first, last)
    case _ => None
  }
}

val p: Person = ...
p match {
  case Person(FirstLast("Joe", last), age) => ...
}

In Decomat:

object FirstLast {
  operator fun get(first: Pattern0<String>, last: Pattern0<String>) =
    customPattern2(first, last) { it: Name ->
      on(it).match(
        case(FullName[Is(), Is()])
          .then { first, last -> Components2(first, last) },
        case(SimpleName[Is(), Is()])
          .then { first, last -> Components2(first, last) }
      )
    }
}

// Then use the `FirstLast` custom pattern to match and extract data
val p: Person = ...
val out =
  on(p).match(
    case(Person[FirstLast[Is("Joe"), Is()], Is()]).then { (first, last), age -> ... }
  )

https://github.com/exoquery/decomat

I've just released version 0.1.2 of Kapshot, a compiler plugin that allows Kotlin code to access fragments of its own source text at runtime. 0.1.2 adds support for capturing the source of property declarations. This complements the existing support for class, method and block capture. Write self-testing sample code!

val captured = CapturedBlock {
    println("Hello!")
}

@CaptureSource
val myVal = 10

/* ... */

captured.source.text // == "println(\"Hello!\")"

sourceOf(::myVal).text // == "val myVal = 10"

https://github.com/mfwgenerics/kapshot

Finding and Fixing an Intermittent Bug

Hey community, We created a Kotlin copilot chat bot which is trained by Kotlin documentation. It can help you to write kotlin code and learn it. Feel free to give it a try, it’s free. https://magicai.ai/kotlin-copilot/

Just published an article about "How to use Arrows Either for exception handling in your application" https://medium.com/@inzuael/how-to-use-arrows-either-for-exception-handling-in-your-application-a73574b39d07

Join the Livestream: Launch Your Kotlin Course with New Materials for Educators! Are you looking to launch your own Kotlin course? We are excited to equip you with the necessary tools! Join us for a special livestream for Kotlin educators on Jun 21, 2023 at 16:00 UTC! Join Livestream on YouTube Or sign up to get an email reminder. Our guest, Anastasia Birillo, is a Kotlin developer […]

Debugger-based Development

Kotlin 1.8.20 introduces the newest multiplatform compilation target for Kotlin – WebAssembly! This opens up new possibilities for Kotlin developers, ranging from writing web apps, to blazing fast server-side development with Node.js and standalone WebAssembly runtimes, and even bringing your Compose Multiplatform apps to the browser! Together with Sebastian Aigner (https://twitter.com/sebi_io), explore the examples, get an overview of WebAssembly as a technology, and learn the current state and future plans of Kotlin for WebAssembly. While it’s still early for Kotlin/Wasm, it’s the perfect time to take a look, do some experiments and build some toy projects. This video features a number of examples from the ecosystem:

We are happy to announce the first release of https://xef.ai/learn/quickstart/kotlin/ . Xef is a multi-platform library that helps you integrate LLMs and AI built with Ktor, Kotlin Serialization and Arrow. Its main feature is automatic serialization from AI responses to models and memory/context management.

import com.xebia.functional.xef.auto.*

@Serializable
data class Book(val title: String, val author: String)

suspend fun AIScope.books(topic: String): List<Book> {
  val prompt = buildPrompt {
    + "Give me a selection of books about the following topic:"
    + topic
  }
  return prompt(prompt)
}

Next items in our roadmap are modules for loading local models, and distributed inference and training. I wanted to give a special thank you to everyone working in Kotlin Multiplatform which is enabling Xef to run in so many places with ease. 🙏

I'm happy to announce the first release of interfAIce, a new open source library written in Kotlin interfAIce is an automatic proxy generation library that lets you harness the power of ChatGPT into your applications - just by defining an interface. The auto-generated proxy will query the OpenAI api based on your method definition(name, parameters, returnType, etc) and return the LLM's response in any Kotlin/Java type you want! The library also comes with support for: • spring boot • Kotlin Coroutines & Java Reactor If you're interested, check out my blog post for more

📢 Discover the latest KotlinBit! 📚💡 Explore insights on equality, join the discussion and share your thoughts! 💬🗣️ Don't miss out! Spread the word and engage with our vibrant community. 🌍🌐 https://kotlinbits.vercel.app/bits/equality

How type system makes Kotlin so flexible, safe, and intuitive? Read the article written by @marcinmoskala Moskała to find the answer.👇 📖 https://kt.academy/article/kfde-type_system Get the complete book here: 👇 📕 https://kt.academy/book/kotlin_essentials Many thanks to wonderful reviewers: Owen Griffiths, Nicola Corti, Endre Deak, Matthias Schneck, Emmanuele Papa, Grigory Pletnev and Roman Kamyshnikov. You are the best! 💪🏻

Make your Kotlin code more expressive and assertive with these neat tricks! As you can tell from the tone and content of my latest blog post, it’s 100% serious and definitely meant to be taken seriously 👍😄 https://medium.com/@sam-cooper/5-pro-kotlin-dev-hacks-for-more-assertive-code-26cd2db4d7d7

KVision 6.5.0 is out https://github.com/rjaros/kvision/releases/tag/6.5.0

Really cool articles(not mine) https://medium.com/@exyte/jetpack-compose-tutorial-replicating-the-water-level-widget-4ae29792f852 https://medium.com/@domen.lanisnik/creating-an-animated-counter-button-in-jetpack-compose-444d03129510

Tidy First, then Implement -

Major updates with many components in JetPack Compose. Check it out. https://github.com/SimformSolutionsPvtLtd/SSComposeCookBook