Kotlin isn’t a magic bullet that prevents NullPointerExceptions.
Not at all.
What Kotlin does do is force you to think about how you want to handle your nulls. through Kotlin forcing you to think this through, the hope is that you’ll avoid NullPointerExceptions. The only problem is, Kotlin has the !! operator, also known as the “Not Null Assertion Operator”. This operator basically says “Hey Kotlin, trust me, I’m a pro, I know what I’m doing … I KNOW THIS WON’T BE NULL”.
This… is a code smell.
In this episode, Donn walks through why Kotlin’s Not Null Assertion Operator (!!) is a code smell and what you can do to alleviate it.
Build amazing apps in Java, Kotlin or whatever tech you prefer and use Bitrise to automate your Android integration, build, test and deploy process quickly and easily. Sign up for an exquisite pair of Bitrise Branded Socks, here! https://go.bitrise.io/fragmented
Donn and Kaushik talk about testing RxJava streams with a Kotlin extension method and how and when to test various scenarios. Donn talks about his thoughts on the Testing Pyramid and why he thinks it’s incorrect and how you can help shift your thinking in regards to it. They then talk about IDE themes and how the theme can help you with your day to day development and more.
They wrap up with some talk about developing on Macs vs Windows and Linux.
In this episode Donn and Kaushik sit down with Instacart Engineer Colin White to discuss a new image library he has created called Coil.
Coil is a Kotlin-first image library that focuses on ease of use, simplicity and extensibility. In this episode we ask him the question you’re probably wondering … “Why create an image library, isn’t this a solved problem already?” and then move onto the details of how the library works, and what it offers developers.
From Donn’s perspective – It’s an interesting library and gives you what you need with minimal footprint but offers you the extensibility that you’d want in the future. Its a good balance of “just enough” and “I might need this”.