zeienko-vitalii/dart_3_class_modifiers.md

Created March 26, 2025 10:23

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dart_3_class_modifiers.md

Modifier	Instantiate?	Extend?	Implement?	External Use?	Pro Tips
Abstract	❌	✅	✅	✅	Factory constructors mimic instantiation!
Base	✅	✅ (base/final/sealed only)	❌	✅	Ensure consistent inherited behavior!
Interface	✅	❌	✅	✅	Ideal for contracts without forced inheritance!
Final	✅	❌	❌	✅	Maximize API stability and avoid surprises!
Sealed	❌	✅ (internal only)	❌	✅	Perfect for exhaustive type safety!
Mixin	❌	✅	✅	✅	Combine multiple mixins for modularity and code reuse!

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