Are applications written in Swift without using Objective-C?

Question

iOS

Good afternoon!
Are applications written in Swift iOS without using Objective-C? That is, completely using this language, and not in conjunction with Objective-C, or without it in any way?

Answer 1

I myself do not develop either for poppy or for swift, but here they write that it is quite possible, and share links to tutorials.

Answer 2

Yes, they write.

Answer 3

This is impossible, since the ecosystem of each language includes the same OS and the same libraries, in general, they have almost no differences except for the syntax, any programmer with experience needs 1 day, even 0.1 days, to notice this and understand even if he sees OS X for the first time, only fools or completely newbies are not capable of this.