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Life & fun · April 9, 2015

Kotlin

Statically typed programming language targeting the Java /JS

Kotlin launched on April 9, 2015 with 3 votes. The site was still online in September 2026, 11 years on.

Visit kotlinlang.org ↗Kotlin alternatives

What it does

Kotlin is a concise and multiplatform programming language by JetBrains. Enjoy coding and build backend, mobile, web, and desktop applications efficiently.

Null safety and concise syntax already make Kotlin a language AI gets right. We’re making it even better with open benchmarks and agent-ready tooling. The Kotlin 2.4.20 release is out! Here are the main highlights: For the complete list of changes, see What’s new in Kotlin 2.4.20 or the release notes on GitHub. How to install Kotlin 2.4.20 The latest version of Kotlin is included in the latest versions of IntelliJ IDEA and Android Studio. To update to the […] Kotlin Toolchain 0.12.0 is out. This release brings some long-awaited features: multiplatform libraries publication, a preview of Wasm application support, Compose Hot Reload from the command line, and more. Read on for the details,…from kotlinlang.org

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  • Kotlin 1.02016 · blog.jetbrains.com · ▲6

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    Manipulating monetary amounts is a common computing chore. However, no mainstream language has a first-class data type for representing money, it’s up to programmers to code abstractions for it. This isn’t an issue per se until dealing with rounding issues from operations like installment payments (e.g., buy now, pay later), foreign exchange, or even simple things like fee processing and tax collection. Inspired by my days at N26 Brasil dealing with these challenges, I introduce Money: a Kotlin library that makes monetary calculations and allocations easy.

  • I finished v5 of a JVM framework I've spent spent half a decade making2022 · javalin.io · ▲377

    ForewordJavalin is a Java and Kotlin web framework which focuses on simplicity and Java/Kotlin interoperability.It supports WebSockets and HTTP3, and it uses...

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    Fuse – statically typed functional programming languageAug 2026 · fuselang.org · ▲121

    Hi HN! I've been working on the fuse programming language, it's a statically typed purely functional language with higher-kinder types and ad-hoc polymorphism. It compiles to the GRIN whole-program optimizer, producing LLVM-generated native code. Fuse supports ADTs, Generics, Type Methods, Traits, Pattern matching etc. all in a functional style with no mutations. I’ve been developing the language for 5 years, with code written in Scala. I’ve started coding the language from the base of System F that was implemented as part of the book: Types and Programming Languages (tapl). And then…

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