dart-3-updates

Dart 3 pattern matching refactors conditional logic by replacing verbose if-else chains with switch expressions and if-case statements, producing concise, type-safe control flow. This allows direct data destructuring within the condition for cleaner code.

Dart 3 records are anonymous, immutable data aggregates that group multiple values. They satisfy the requirement for multiple function return values and local data grouping, simplifying complex return types without needing custom classes.

Switch expressions in Dart enable data destructuring by matching object structures directly within the switch syntax. This pattern matching feature binds variables to extracted values, allowing expressive and type-safe multi-branch logic.

Use Dart 3 if-case statements when you need to destructure a single value and execute logic based on a specific pattern match, rather than exhaustively covering all cases in a traditional switch statement or expression.

Yes, Dart 3 pattern matching works with existing codebases by applying if-case and switch expressions to standard objects and collections. Records are independent and specifically used for new multiple return value or grouping requirements.