Getters and Setters
Getters and Setters in Dart Overview
Getters and setters provide controlled access to class properties in Dart. They allow you to define computed properties and add validation logic while maintaining a field-like syntax. Dart provides both default implementations and custom implementations for fine-grained control.
Key Concepts
1. Default Getters/Setters
- Automatically generated for all fields
- Field-like access syntax
- No additional code required
2. Custom Getters/Setters
- Explicit property access control
- Validation and computation
- Maintains field access syntax
3. Lazy Getters
- Late initialization
- Memoization pattern
- Computed once when first accessed
4. Private Variable Access
- Encapsulation with
_prefix - Controlled exposure
- Validation before assignment
5. Best Practices
- When to use custom accessors
- Performance considerations
- Read-only properties
- Documentation standards