@Dependency

A property wrapper type that reflects a dependency injected using DependencyContainer.

Usage

@Dependency(\.aService) var aService

Create a Service

example to implement AService struct

struct AService {
    fileprivate public static let shared = AService()
    private init() {}

    public var example: Foo {
        ....
    }
    public func example() -> Foo {
        ....
    }
}

Implement Dependency

public struct AServiceDependencyKey: LazyDependencyKey {
    public static var lazyValue:AService?
}

extension DependencyContainer {
    public var aService: AService {
        get { Self[AServiceDependencyKey.self] }
        set { Self[AServiceDependencyKey.self] = newValue }
    }
    static func setAService(){
        DependencyContainer.set(initialValue: AService.shared, key: AServiceDependencyKey.self)
    }
}

Required

• Somewhere on your app launch code (Appdelegate)

setupDependencies()

and

private extension AppDelegate {
     func setupDependencies() {
         DependencyContainer.setAService
         DependencyContainer.set ....
         ...
     }
 }

Ref&Tech

idea: https://apiumhub.com/tech-blog-barcelona/native-dependency-injection-in-swift/

Documentation

Swift Subscripts: https://docs.swift.org/swift-book/documentation/the-swift-programming-language/subscripts/