Sergei Rybalkin

Closing the Kotlin DevRoom @ FOSDEM 2023

Other people: Nicola Corti Martin Bonnin Marco Gomiero Holger Steinhauer

Kotlin ecosystem is rapidly evolving over the years and 2022 was not an exception. Let's gather to recap everything that happened with Kotlin in the past year and to have a closer look at the language roadmap: from the new K2 compiler, to stable Kotlin Multiplatform and beyond.

Other people: Marco Gomiero

This talk is a deep dive into Kotlin data classes optimisations. We will find what optimisations are possible, and how to apply them with Kotlin compiler plugins and Android optimisers.

In this talk: 1. We quantify data classes impact on App size 2. Apply general purpose DEX-code optimizations to data classes 3. Introduce DataClassGenerate (DCG), a Kotlin-specific optimisation fod data classes 4. Observe Kotlin Compiler Plugin API and DCG implementation

- Describes DataClassGenerate approach
    1. @DataClassGenerate annotation
    2. DataClassGenerate compiler plugin
    3. Kotlin Compiler plugin interaction with Redex