The existence of SwiftUI has somehow rendered UIKit obsolete, you should get busy learning SwiftUI because it is the future of app development on Apple platforms.
Recommended learning resources to become an iOS developer, so you can spend time learning instead of searching.
Preparing for an iOS interview requires you to take considerable amount of time to review Swift language features.
In a nutshell, GCD consists of language features, runtime libraries, and system enhancements to support concurrency in Apple platforms.
One way to perform operations concurrently in iOS is with the Operation and OperationQueue classes built on top of GCD.
CocoaPods will resolve dependencies between libraries, fetch the resulting source code, then link it together in an Xcode workspace to build your project.
When you add a dependency to Xcode projects you have the options to add Swift packages, XCFrameworks, frameworks or libraries.
The official tool for managing the distribution of Swift code to automate the process of downloading, compiling, and linking dependencies.
Like MVC or MVVM, but it separates the code further by single responsibility: View, Interactor, Presenter, Entity and Router.