This is a simple app which provides you an opportunity to change background color in different ways. It was made during IOS Development course in Higher School of Economics

• What issues prevent us from using storyboards in real projects?

  • Difficulties in development
  • No code programming
  • Challenging to change

• What does the code on lines 25 and 29 do?
  
  

  • (25) It lets us to change view constants (change position).
  • (29) Due to this code, we can add our view to the screen view, so, we can see it on the screen.

• What is a safe area layout guide?
  This is a view without top bars panel.

• What is [weak self] on line 23 and why it is important?
  
  It creates a weak reference to self in order to prevent memory leaks.

• What does clipsToBounds mean?
  It means that we can clip (edit) stack bounds.

• What is the valueChanged type? What is Void and what is Double?
  This is an undefined function. Void is a return type. Double is an input value.