struct Example { var a: Int; var tags: [String] }
let s1 = Example(a: 1, tags: ["x"])
var s2 = s1
s2.a = 9After s2.a = 9, are the addresses where s1.a and s2.a are stored the same or different, and what about the buffer address of the tags array?
s1 and s2 are separate values, so a is at a different address from the start (inline copy). For tags, the Array struct is copied but the heap buffer is shared, so the address is the same until s2.tags is mutated and COW copies it.
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