Callam questions

Callam answers

• Firebase data structure for iOS app with profiles and basic gamification
• Ungrouping UITableView Section Header when Header is top of view
• Can't access nested dictionaries/arrays from json with swift
• Create Array by Dynamic Keys and Values
• AVPlayer won't let me access URL
• Smooth transition when changing navigation bar "prefersLargeTitles"
• How can I retrieve data with queryEqualToValue in auto id child. Firebase-iOS
• Move collection view on button click (swift)
• How to put the of first and last element of Array in Swift
• detect up volume change swift