Calculate age from birth date

Question

I cant find age in from birth date. What I got is

fatal error: unexpectedly found nil while unwrapping an Optional value
(lldb) 

My code

Answer 1

update: Xcode 11 • Swift 5.1

You can use the Calendar method dateComponents to calculate how many years from a specific date to today:

extension Date {
    var age: Int { Calendar.current.dateComponents([.year], from: self, to: Date()).year! }
}

---

let dob = DateComponents(calendar: .current, year: 2000, month: 6, day: 30).date!
let age = dob.age // 19