📦enum

🚧 施工中

?

what is enum? 🚧

📗 參考

• BetterProgramming ⟩ Comparable Enums in Swift 5.3

• Sundell ⟩ Avoiding problematic cases when using Swift enums

• Sarun ⟩

  • Does Swift enum retain its associated value

  • 3 lesser-known ways of using Swift enums

  • How to save enum with associated value in UserDefaults using Swift

• 5sw.de ⟩ Enum or struct?

👥 相關

• if/guard case let - pattern matching

• Pattern Matching

• enum is a declaration.

🔴 主題

• Comparable Enums (⭐️ Swift 5.3 feature)

• CaseReflectable - inspect case name, associated values.

• enum case pattern

• filter enum cases

⭐️ 重點

• Enums are RawRepresentable if they have no associated values.

💈範例

• long press + drag - use custom enum for its GestureState.

🗣 討論

• How to require an enum be defined in Swift Protocol - enum as requirement.