Hi all! My app, Love Your Music, needs a cross platform backend shared between a swift and kotlin codebase. UniFFI has been an absolute joy to use, but unfortunately the setup process is a little bit poorly documented. No problem! I got you <3. This tutorial assumes you have a file structure like
Why Rust × Swift? A common use for rust is FFI, which we are actually doing right here anyway! But if you can FFI to Swift, you can FFI to anywhere. Cross platform apps writen in native code (e.g. apps with a Kotlin counterpart) benefit greatly from shared libraries and UniFFI. In addition, the Rust community is significantly larger, and so it's very likely you'll find crates that are more battletested, more featureful, higher performance, more documented, or even nonexistant in Swift.