1. Variable, 2. Constant, 3. Array, 4. Dictionary, 5. Multiline String, 6. Unwrapping Optional, 7. If Else, 8. For Loop, 9. While Loop, 10. Repeat While Loop, 11. Enum, 12.Function, 13.DispatchQueue, 14. Closure, 15. Create Project, 16. UIView, 17. UILabel, 18. UIButton, 19. UISwitch, 20. UISlider, 21. UIImageView, 22. UIStepper, 23.UISegmentedControl, 24. WKWebView, 25. NSLayoutConstraint, 26. UITextField 27. UITextView 28. CornerRadius 29. Border 30. Shadow
