New features in Dart 3.0

New features in Dart 3.0

• Patterns: We can use more complex patterns and destructuring cases in switch statements and for-in loops.
• Records: We can define tuples with optional or named parameters and access them using their names or index+1 notation. They are useful for returning multiple results from methods or parsing JSON.
• Class Modifiers: We can use the final, interface, and base modifiers to guarantee that a class cannot be extended, implemented, or instantiated in certain contexts. We can also use sealed classes to handle different states in a more readable way.
• Combining Modifiers: We can combine modifiers in a specific order.

Conclusion

Dart 3.0 introduces several new features that improve the language's expressiveness and safety. By using patterns, records, and class modifiers, developers can write more concise and readable code that is less prone to errors and more robust.