TIL `String` in Swift has `sorted()` returning `[Character]`; `Array` of `Equatable` is `Equatable`

Findings of the day:

• String has sorted() returning [Character]. First, I wasn’t expecting it having this at all. Second, I wasn’t expecting this func return array of characters but not a String. Probably I should examine all String API. Haven’t done this in a while.

• Array of Equatable is Equatable. This is logical. But I remember implementing this on my own sime time ago. Interesting to find which Swift version broght this.