iOS Programming: The Big Nerd Ranch Guide (6th Edi   19. UIGestureRecognizer and UIMenuController

About the 19. UIGestureRecognizer and UIMenuController category (1)
Solution to the Platinum Challenge the Hardest Way (3)
Argument of '#selector' compiler error (3)
Xcode 8.3.3 may have bug that prevents solution from running (3)
Solution to the Golden Challenge (1)
Delete Option Not Appearing (2)
Alternative platin solution ch 19 with color picker (1)
Question on the purpose of currenLines.removeAll()? (2)
Solution for Ch 19 Silver Challenge: Mysterious Lines (3)
Solution for Ch 19 Platinum Challenge: Colors (1)
Solution for Ch 19 Gold Challenge: Speed and Size (1)