Swift Best Practices

Priority: P0

Implementation Guidelines

Control Flow

• Guard for Early Exit: Use guard over nested if for better readability.
• for-where: Use for item in items where condition instead of nested if.
• Switch Exhaustiveness: Always handle all cases; use @unknown default for enums.

Value Types & Immutability

• Prefer Structs: Use struct by default; classes only for reference semantics or inheritance.
• Immutability: Use let over var whenever possible.
• Copy-on-Write: Leverage Swift's built-in COW for collections.

Naming & Style