bigMOTOR/2021-10-02_Article_ComposableContextsArchitecture_1.swift

## 2021-10-02_Article_ComposableContextsArchitecture_1.swift
protocol ObserveUserNameUseCase {
  var userName: Observable<String> { get }
}

protocol SignOutUseCase {
  func signOut()
}

struct UserScreenViewModel {
  typealias UseCases = ObserveUserNameUseCase & SignOutUseCase
  ...
  init(useCases: UseCases) {
    ...
  }
}
	protocol ObserveUserNameUseCase {
	var userName: Observable<String> { get }
	}

	protocol SignOutUseCase {
	func signOut()
	}

	struct UserScreenViewModel {
	typealias UseCases = ObserveUserNameUseCase & SignOutUseCase
	...
	init(useCases: UseCases) {
	...
	}
	}