Скачать или смотреть Why property Wrappers are so important in Swift?

Hello guys, welcome to another video!

Some time ago we talked about State management in SwiftUI, we learned how to use @State, @StateObject, @ObservedObject, etc. All of them are property wrappers, and today, we would create our own property 🎉. Let's start from the basics and create a simple wrapper @Age to validate an Int value that represents the age of a user. In this video, we will talk in detail about wrappedValue, but we will see other features and limitations about property wrappers in the next video.

Let's get started! 😄

Content:
0:00 - Intro
1:48 - The problem that property wrappers solve
2:07 - The problem with ages
3:50 - Requirements for a property wrapper
5:55 - Initializing wrappedValue
8:25 - Validating initializer
10:07 - Transforming wrappedValue in a computed property
14:42 - Adding parameters to the property wrapper
17:02 - Outro

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References:
https://docs.swift.org/swift-book/Lan...
https://docs.swift.org/swift-book/Ref...
https://github.com/apple/swift-evolut...
https://www.swiftbysundell.com/articl...
https://nshipster.com/propertywrapper/

Source code showed in the video (and an extra demo): https://github.com/pitt500/swift-and-...

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Other videos in the channel:
State management in SwiftUI:    • State Management in SwiftUI  
UIKit in SwiftUI:    • UIKit in SwiftUI  
Generics:    • Generics  
The power of Combine:    • The power of Combine  

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Twitter:
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Credits:
Music by Wataboi from https://pixabay.com/
Video edited with LumaFusion