Sometimes you might need to get an array of characters out of a String, for example:
"foo bar" => ["f", "o", "o", " ", "b", "a", "r"]
To do so you can do:
"foo bar".map { String($0) }
or if you are into point free notation:
"foo bar".map(String.init)
There you go. 😎
For the record, this post dates back to Swift version 2. If you're into programming language archeology, checkout the original version here.