Dart Patterns Skill

Dart 3 is a statically typed, null-safe language with a clean async model and powerful meta-programming. This skill covers idiomatic Dart patterns that go beyond the basics.

When to Activate

• Writing Dart code beyond simple Flutter widgets
• Designing error handling strategy in Dart
• Working with streams or complex async flows
• Using Dart 3 sealed classes and pattern matching
• Extending existing types with extension methods
• Understanding Dart's type system and null safety

Sound Null Safety

Dart's null safety is sound — the compiler guarantees that nullable types are checked before use.