The Foundation framework, which includes the root object class, classes representing basic data types such as strings and byte arrays, and collection classes for storing other objects, has added new support for specifying Units and Measurements. Understand how to model your measurements and convert within dimensions. Learn from the experts how to use and surface Units and Measurements in your interfaces.a
https://developer.apple.com/videos/play/wwdc2016/238
The Foundation framework, which includes the root object class, classes representing basic data types such as strings and byte arrays, and collection classes for storing other objects, has added new support for specifying Units and Measurements. Understand how to model your measurements and convert within dimensions. Learn from the experts how to use and surface Units and Measurements in your interfaces.a
Keywords: App Frameworks, iOS, macOS, tvOS.