How to change the date formatter of 1st Dec 1984
String value to 2022-12-01
What will be the required Date formatter style?
This answer isn't pretty by any means. But it will get the job done. What's difficult is the 'st' in 1st. As far as I know there isn't a date format for that.
let dateString = "1st Dec 1984".replacingOccurrences(of: "[st|nd|th|rd]", with: "", options: .regularExpression)
let formatter = DateFormatter()
formatter.dateFormat = "d MM yyyy"
let date = formatter.date(from: dateString)
formatter.dateFormat = "yyyy-MM-dd"
let newString = formatter.string(from: date!)
This will give you your desired results. Except I'm not sure how you get the 2022 in your result since that can never be produced from your given date.