如何转换范围<string>到 Swift 中的字符串</string>

Question

Consider dir that is a Range<String :

let dir = url.absoluteString.range(of: "/", options: .backwards)

When trying to convert dir to a String via String(dir) we have:

Initializer 'init(_:)' requires that 'Range<String.Index>?' conform to 'LosslessStringConvertible'   

I have looked at a number of questions regarding swift substrings and ranges and have not found an exact answer to this. So how can the Range be converted to a String ?

Answer 1

if let range = url.range(of: "/", options: .backwards) {
   let substr = url[range]
}