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…

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…

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

About data classes, named parameters & default values

Writing data models in Java is a pain. You have to write getters, setters, toString(), hashCode() and equals() methods, constructors and possibly builders or a copy() method. For complex models this can easily create classes of a few…

A problem like Kotlin

Kotlin has been around for a while now. My first dive into it was short — I was just finishing up at Path and had a few hours to do something small, so I decided to play around with Kotlin. A few hours later I gave up. Back in 2014 there were not many people using it, the language was…