如何获得swift3中的子串范围？

Question

如何在swift3中获取子字符串的范围？

 let string  = "Please Click Here"

我需要点击范围

Answer 1

let string = "Please Click Here"
if let range = string.range(of: "Click") {
   print(range)

}

Answer 2

转换为NSString和用户rangeOf：

let string  = "Please Click Here"
let range = (string as NSString).range(of: "Click", options: .caseInsensitive)
print(range)