Harry Day questions

• Move zeros to the end of a list while leaving False alone
• Change Background Colour Along a Gradient as User Scrolls
• SwiftUI and Combine - Update variable in view model when another changes
• CloudKit integration requires that all attributes be optional, or have a default value set. Does not detect default UUID value
• Compute the last (decimal) digit of x1 ^ (x2 ^ (x3 ^ (... ^ xn))) [duplicate]

Harry Day answers