Swift 5: iOS: 13.1 Date formatter and converter: Converts: dateString to Date dateString to Formatted Date String date to Formatted date string

Date Formatter (extension).swift

import Foundation

// USE:
var dateString = "14.05.2020T10:30:10"
let dateFormat = DateFormatter(format: "dd.MM.yyyy'T'HH:mm:ss")
let dateFormat1 = DateFormatter(format: "MM/dd/yyyy '@' HH:mm")
let date = Date()

print("date String -> toDate:       \(dateString.toDate(dateFormatter: dateFormat)!)")
print("date String -> toDateString: \(dateString.toDateString(dateFormatter: dateFormat, outputFormat: "MM/dd/yy")!)")
print("Date -> formated string:       \(date.toString(dateFormatter: dateFormat1)!)")

extension DateFormatter {
	convenience init(format: String) {
		self.init()
		dateFormat = format
		locale = Locale.current
	}
}

extension String {
	func toDate(dateFormatter: DateFormatter) -> Date? {
		return dateFormatter.date(from: self)
	}

	func toDateString(dateFormatter: DateFormatter, outputFormat: String) -> String? {
		guard let date = toDate(dateFormatter: dateFormatter) else { return nil }
		return DateFormatter(format: outputFormat).string(from: date)
	}
}

extension Date {
	func toString(dateFormatter: DateFormatter) -> String? {
		return dateFormatter.string(from: self)
	}
}