The problem of union types for type systems
KotlinConf 2024 shocked me with a new announcement. Union types are coming to Kotlin! However, in a limited form. At first, I couldn't understand why, but after some talks and discussions, I realized that it is a very smart move. Now let me show you the big picture. One feature I have always admired in other programming languages is union types, such as Int | String. I haven’t had any specific pla
What's new in Kotlin 1.9.0 | Kotlin
*The Kotlin 1.9.0 plugin will be included with Android Studio Giraffe (223) and Hedgehog (231) in their upcoming releases. The Kotlin 1.9.0 plugin will be included with IntelliJ IDEA 2023.2 in the upcoming releases. New Kotlin K2 compiler updatesThe Kotlin team at JetBrains continues to stabilize the K2 compiler, and the 1.9.0 release introduces further advancements. The K2 compiler for the JVM is
Kotlin 1.9.0 Released | The Kotlin Blog
The Kotlin 1.9.0 release is out and the K2 compiler for the JVM is now in Beta. This release contains new language features as well as improvements for Kotlin Multiplatform and Kotlin/Native. Here are some highlights from this release: New Kotlin K2 compiler updates Stable replacement of the enum class values function Stable ..< operator for open-ended ranges New common function to get regex captu
Public API challenges in Kotlin - Jake Wharton
Kotlin is justifiably lauded for its language features compared to today’s Java. It has constructs which allow expressing common patterns with more concise alternatives. An overused example in every intro-to-Kotlin talk or blog post is comparing a Java “POJO†to a Kotlin data class. Here’s yet another one of those comparisons, but bear with me as it will be used to illustrate the points in this po
Introducing the Kotlin Mascot! | The Kotlin Blog
Updated on August 15, 2022 â¸ï¸ How’s the Kotlin mascot doing? Paused It’s been a while since we introduced the new Kotlin mascot, and we’ve been carefully monitoring the feedback. Although many of you have expressed enthusiasm for the mascot, some have also voiced criticism and disapproval. We kindly ask you to refrain from using the mascot in its current form. Although it might not be possible to
DataStore and Kotlin serialization
In the following posts from our Jetpack DataStore series, we will cover several additional concepts to understand how DataStore interacts with other APIs, so that you’d have everything at your disposal to use it in a production environment. In this post, we will be focusing on Kotlin serialization. We will be referring to the Preferences and Proto codelabs throughout this post, for code samples. D
Coroutines & Patterns for work that shouldn’t be cancelled
In part 2 of the Cancellation and Exceptions in Coroutines series, we learnt the importance of cancelling work when it’s no longer needed. On Android, you can use the CoroutineScopes provided by Jetpack: viewModelScope or lifecycleScope that cancel any running work when their scope completes — that is when the Activity/Fragment/Lifecycle completes. If you’re creating your own CoroutineScope, make
Results of the Kotlin Features Survey 2021 | The Kotlin Blog
A few months ago we held the second poll for the most awaited features in Kotlin. The main goal of this research was to find out what you thought about the relative importance of future Kotlin features and the diversity of user scenarios. This research will help us to prioritize our long-term language development plans. We’d like to thank everyone who participated and answered the questions! Below
Create an application CoroutineScope using Hilt
Following coroutine’s best practices, you might need to inject an application-scoped CoroutineScope in some classes to launch new coroutines that follow the app lifecycle or to make certain work outlive the caller’s scope. In this article, you’ll learn how to create an application-scoped CoroutineScope using Hilt, and how to inject it as a dependency. To further improve the way we work with Corout
Kotlin: Fun with “inâ€
I’m a big fan of determinism. It’s part of why I love Kotlin as a programming language. I like pushing problems to the compiler. I like using types for expressiveness and safety. And I really like sealed classes for representing state. One of the tools in Kotlin that allows us to achieve greater determinism is the language’s when expression. Most programmers working in Kotlin are pretty familiar w
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Grants program
The conflation problem of testing StateFlows
Update on the Name of Kotlin Multiplatform | The Kotlin Blog
Best practices for coroutines in Android  | Kotlin  | Android Developers
Coroutines Job Structures
Strikt
Item: Consider aggregating elements to a map
Go with the Kotlin Flow 🌊
How To Write Use Cases (Interactors) in Kotlin
Kotlin Flow Assert Delight
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