August 2025
Intermediate to advanced
378 pages
8h 4m
English
Content preview from Mastering Swift 6 - Seventh Edition
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12
Dynamic Member Lookup and Key Paths
Dynamic member lookup is an important feature in Swift that enables developers to access properties and methods of a type dynamically using dot syntax, even if those properties and methods are not explicitly defined in the type’s declaration. By leveraging dynamic member lookup, we can write more flexible and expressive code.
Swift’s key path feature is a powerful and flexible way to access properties of a type indirectly, enabling developers to write reusable and easier-to-maintain code. Key paths are type-safe pointers to properties within an object that enable us to reference and manipulate values dynamically without knowing them at compile time. Key paths can be used with functions such as map, filter ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.