Using map, filter or reduce to operate on Swift collection types such as Array or Dictionary is something that can take getting used to. Unless you have experience with functional languages your instinct may be to reach for the more familiar for-in loop. With that in mind here is my guide to using map, filter, reduce (and flatMap and compactMap). Last updated: May 1, 2018 Map Use map to loop over

As part of the theme of iOS 8 to make interfaces adaptive there are some major changes to the presentation of view controllers. The new UIPresentationController does a lot of the hard work of animating view controller transitions and adapting to device size changes such as rotation. It also brings some big changes to some old UIKit favourites such as alert views, action sheets, popovers and search

Last updated: Jun 12, 2020 It only took five years but this is much easier to do with Interface Builder in Xcode 11. See Self Sizing Table View Cells in Interface Builder Dynamic Type Everywhere I covered the basics of supporting dynamic type some time ago. Introduced in iOS 7, dynamic type allows the user to specify a preferred reading size for text. In the upcoming release of iOS 8 the Apple int

I don’t remember where I first saw this mentioned so I cannot give proper credit but this is an interesting tip to try if you have five minutes. Open Source Builds of the Clang Analyzer The Clang Static Analyzer has long been integrated with Xcode and provides powerful source code analysis to detect bugs in C, C++ and Objective-C code. The analyzer is fully open source and part of the larger Clang