https://ericsspace.com/articles/remove-unused-code-in-a-real-world-ios-project/
Remove unused code in a real-world iOS project
  Remove unused code in a real-world iOS project
https://www.createwithswift.com/designing-for-application-states-creating-seamless-user-experiences/
  
  Create with Swift
  
  Designing for Application States: Creating Seamless User Experiences
  Design thoughtfully for every app state, transforming potential user frustration into a seamless, engaging experience.