Understanding Property Wrappers in Swift By Examples
You can also read this article in my Xcoding With Alfian blog website using the link below.
Alongside many new feature that come with the Swift 5.1, one of the most interesting feature is Property wrappers. Basically, it’s a layer/delegate that sits in the middle between how the declared property should behave and how the property will be stored. Property wrappers can be defined by using struct, class, or enum. It can be used when we declare properties inside of those types also.
Swift has already provided several built in wrappers before Swift 5.1 such as lazy, @NSCopying, but with the introduction of Property Wrappers, developer can now also implement custom wrappers without making the language become more complex. You can read the reasoning behind this proposal (SE-258) in the Swift Evolution link below.
