Kotlin Best Practices — Quick Reference

Null Safety

!! is banned. Use ?., ?:, or null check for smart cast.

See code-patterns.md for all null safety examples.

Either Error Handling

Managers return Either<ClientException, T> -- never throw. Controllers unwrap with .throwOrValue().

See code-patterns.md for manager + controller examples.

Enum Usage

Never hardcode strings when an enum exists. Use EnumName.VALUE.value everywhere.

See code-patterns.md for enum definition and usage patterns.