I currently have a code:
let now = NSDate()
let result: NSDate
result = Cal.iso8601.dateByAddingUnit(.Year, value: -5, toDate: now, options: [])!
return Cal.iso8601.startOfDayForDate(result)
that generates a date in the format:
2016-09-15 22:00:00 +0000
and I want to convert it to this date format:
2016-09-16T13:49:23.221Z
how can I do it in Swift?
DateFormatter requires a lot of resources so use this extension so that you only create one instance of the formatter.
struct Formatter {
static let instance = NSDateFormatter(dateFormat: "yyyy-MM-dd'T'HH:mm:ss.SSSZ")
}
extension NSDateFormatter {
convenience init(dateFormat: String) {
self.init()
self.dateFormat = dateFormat
}
}
Then just call it with:
// dateTime = the date that you want to format
let date = Formatter.instance.dateFromString(dateTime)
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