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iOS 面试

What is the difference between a struct and a class in Swift?

Consider value semantics, reference counting, inheritance, and mutability.

Structs are value types (copied on assign), classes are reference types (shared via pointers). Classes support inheritance and have deinitializers...

In Swift, the choice between struct and class affects memory management and behavior. Structs use value semantics with copy-on-write optimization...

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