Swift isn’t crossplatform by any stretch. Some people may have succeeded in building reusable swift code across different platforms, but that was by going through a lots of hops, and is barely documented (i’m talking for example building a lib working on both ios and android, which requires creating your own toolchain).

A recent post of the forum wanted to build a crossplatform working group, but as you can see in OP, it wasn’t met with a lot of enthusiasm by the core team.

Obviously, as long as apple is the only major corp behind swift, it isn’t going anywhere outside apple platforms.

The day rust reaches some kind of ergonomics acceptable to non-system programmers you can be sure swift will only be used for UIKit / Swift interfacing and that’s it.

The c++ interop would be nice in rust. The main complaint I'd heard with swift was how slow it is, especially if you dont compile with -Ounchecked. So a lot slower than rust even with -Ounchecked, and with it, slower than gc languages in general ocaml haskell that sort of thing. Has that gotten better? If so, safety and performance with c++ interop would be nice.

Is it a better Rust? The whole language evolution looks like "let's just throw things at the wall with random syntax, maybe it will stick" and "if syntax doesn't work, let's do random one-off constructs, and see if those stick".

Programming languages, even so-called general purpose ones, really need to have a general niche. Swift is for application programming while Rust is for systems programming. Which doesn’t mean that they can’t do things in the other niche. But it does mean that they will not be used to such a wide extent that they will be seen as "better" than the other language for that opposite niche.

One illustrative facts is that Rust in practice cares about each individual allocation. Meanwhile Swift has the wonderful value-semantics collection implemented by way of copy-on-write (cow) atomically reference-counted pointers.

Well, every time I heard about the SwiftUI it’s to complain about the hidden complexity and difficulty to debug it. Not so sure it’s a true plus! And it’s only valid on Mac/iOS

Since it is open source and supports Linux and Windows too we all have it, not just Apple.