Reinder de Vries gives us a Tutorial on the new Swift Keypaths.
“Keypaths in Swift are a way of storing a reference to a property, as opposed to referencing property’s value itself”
https://learnappmaking.com/swift-keypath-how-to/
Keypaths have been an important part of Mac development with Objective-C, so it is nice to see them available under Swift, and iOS.
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