Hi, I’m Ole. I’m a developer from Berlin and co-author of Advanced Swift. Here, I mainly write about Swift and app on Apple platforms. More about me.

1. Mental models in API design

   Lessons for API design from Don Norman’s classic The Design of Everyday Things. More >

   July 31, 2017

2. Customizing the file header comment and other text macros in Xcode 9

   Xcode 9 comes with a new plist file format that allows you to customize text macros, such as the default file header comment, globally or per project. More >

   July 20, 2017

3. Chris Lattner on the Realm WWDC 2017 Swift panel

   I typed up some quotes from Chris Lattner on a recent panel discussion about Swift. More >

   June 30, 2017

4. Optimizing Collections

   I was the technical reviewer for a new Swift book: Optimizing Collection by Károly Lőrentey. More >

   June 12, 2017

5. Playground: What’s new in Swift 4

   Try out the new features in Swift 4 today and get a head start for WWDC. More >

   May 18, 2017