on Wed Jun 08 2016, Paul Cantrell <[email protected]> wrote:
> The interplay of the first two and the last two is what makes the > language unique. For example, structs have a simple, high-level > programmer model — “pass by value semantics” — but the compiler jumps > through all those COW hoops to make them perform _most_ of the time as > if they were C structs statically allocated and then passed by > pointer. I have no argument with most of what you wrote, but this part is just inaccurate. Plain structs are never CoW'd, and the compiler doesn't introduce CoW. The standard library implements CoW “manually” for specific types like Array and String. -- Dave _______________________________________________ swift-evolution mailing list [email protected] https://lists.swift.org/mailman/listinfo/swift-evolution
