It seems to me that swift is about as good as the other trending languages around (rust, go) as well as the nicer older languages (c# and um...) which is plenty

It seems to me that swift is about as good as the other trending languages around (rust, go) as well as the nicer older languages (c# and um...) which is plenty nice. It's not going to convert erlang, haskell, or ocaml users. Now if apple does open source it down the road it could be truly wonderful. C#'s success cross platform, thanks to mono, has been largely despite microsoft.