Weird because it looks like they *did* put in the effort to make String value-ish
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unfortunately struct-based arrays with copy-on-write semantics are impossible to do on current CLR and JVM. :(
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@SilverCompiler The same uniqueness analysis Swift uses to avoid checks could also be used to eliminate copies in many cases
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twitter's a bit brief to explain *why* this can't be done on the CLR, here. But short story is, it can't :(.
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Just curious over here: is it not possible to implement your own raw-buffer-and-ptr-backed data structures for CLR?
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you simply can't do reliable COW. Not if you wanna pass your struct into, say, into a system List<T>.
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I mostly just want a Swift compiler I can rely on, so I'm cheering for you both. ;)
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