Truncate NSDate (Zero-out time)

Question

I want to generate a new NSDate with 0 hours, 0 minutes, and 0 seconds for time. The source date can be any r

Answer 1

Swift 3

extension Date {
    func trimTime() -> Date {
        var boundary = Date()
        var interval: TimeInterval = 0
        _ = Calendar.current.dateInterval(of: .day, start: &boundary, interval: &interval, for: self)

        return Date(timeInterval: TimeInterval(NSTimeZone.system.secondsFromGMT()), since: boundary)
    }
}