Is Property Behaviors considered for Stage 1? https://github.com/apple/swift-evolution/blob/master/proposals/0030-property-behavior-decls.md
Because the project roadmap says: The high-priority features supporting Stage 1's source and ABI stability goals are: ... Resilience: resilience provides a way for public APIs to evolve over time, while maintaining a stable ABI. For example, resilience eliminates the fragile base class problem <https://en.wikipedia.org/wiki/Fragile_base_class> that occurs in some object-oriented languages (e.g., C++) by describing the types of API changes that can be made without breaking ABI (e.g., "a new stored property or method can be added to a class"). ... And i think this feature will help with that. Not a complete solution for resilience problem, but "provides a way for public APIs to evolve over time ". Thanks.
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