If you work with Kotlin on a daily basis you probably love the language and don’t want to go back to Java. Though, many of us work on a codebase that isn’t purely Kotlin. Our Android codebase at SoundCloud still has a fair amount of code written in Java. This…

If you have ever worked with LiveData you probably have written code similar to this: class MyViewModel: ViewModel() { val loading: LiveData<Boolean> get() = _loading private val _loading = MutableLiveData<Boolean>() } This seems nowadays the typical way developers would expose some immutable LiveData, while being able to have a mutable…

And why you should avoid using the “NewApi” suppression! The idea of “Compat” libraries was probably one of the key aspects of Android dominating the mobile space. Other than with iOS, Android users often could not update their operating system after a new version launch, simply as their phones won’t…

The idea of LiveData was an interesting one. Based on the idea of reactive streams, that was on the peak at that time with RxJava plus adding automatic lifecycle handling — a problem on Android. LiveData had bad timing though. It arrived just before Kotlin made its impact in the…

Even if you live on the Kotlin side of things maybe once in a while you also check Swift code. If you do, you probably noticed how similar both languages are. To me, Kotlin looks more concise but I’m also biased as I work with Kotlin daily. On the other…

I guess many of us love Elvis, both the artist and the operator in Kotlin. But it can lead to some hidden pitfalls if you are not aware of how it works. I only realized recently when Vladimir Zdravkovic put some code on twitter and ask us to guess what…

How tools made us forget how to write sane constructors In an ideal world, developers get smarter every day. The code we write this year should be better than the code we wrote 10 years ago, which in turn should be better than the code 20 years ago. …