Kotlin - Rust interop

This repository contains some sample code for using Rust together with Kotlin.

Contents

The app runs a simple micro-benchmark between Kotlin and Rust. It consists of sorting a random string lexicographically.

Both the Kotlin and Rust implementation are using functional-programming, with Kotlin using [streams][streams] and Rust using [iterators][iter].

[streams]: https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.streams/index.html [iter]: https://doc.rust-lang.org/std/iter/

Dependencies

You will need:

• a Java runtime (such as Oracle's JRE on Windows or OpenJDK on Linux)
• Kotlin
• Rust
• GNU Make

Building / Running

Just run make.

Results

Rust is consistently 3-5 times faster than the equivalent Kotlin code.

Support libraries

The jni-rs crate is used in Rust to access JVM types, and a simple Kotlin app loads and runs the Rust code.