Understanding Android Matrix transformations

Many years ago in school I was learning about matrices. I don’t remember much of…

A problem like Navigation — Part 1

Navigation on Android can get quite complicated — from passing data to handling the back stack there’s many things to watch out for. There’s many solutions out there trying to solve that problem — often working with a single Activity, but none of them satisfied me so…

A life without ifs

No more ifs? That sounds great! Well with Kotlin that is possible. Kind of. Kotlin has multiple language features that can replace ifs in many cases. But are they always a good idea? Let’s find out.

Default implementations for interfaces

It all started as a crazy idea… during our Kotlin hour at Deliveroo we were talking about use cases for default implementations for interfaces. I threw in (jokingly): we could have a default implementation for all our methods in our base View interface. I…

Bringing more colour to Android Studio

Sometimes coding can be a bit frustrating — why is this build taking so long? Why is it…

A problem like public speaking

Public speaking is a scary experience. But it’s also a great experience.

With Droidcon UK 2017 I’ve done my second talk and I’d like to talk a bit about the experience and give some tips for public speaking. I’m by means no expert in public speaking…

A problem like destructuring declarations

I’m a huge fan of Kotlin — it’s powerful, concise and makes it fun to write code. But…

What’s in this file anyways?

Java has strict rules when it comes to files:

• A file can contain one public, top level class
• The file and class name need to match
• The package must match the filepath it’s in