Category "nsdate"

How can I set an NSDate object to midnight?

I have an NSDate object and I want to set it to an arbitrary time (say, midnight) so that I can use the timeIntervalSince1970 function to retrieve data consiste

Getting the difference between two Dates (months/days/hours/minutes/seconds) in Swift

I am trying to get the difference between the current date as NSDate() and a date from a PHP time(); call for example: NSDate(timeIntervalSinceReferenceDate: 14