Swift Dates plyground

dates.swift

var date = NSDate()
var yesterday = date.dateByAddingTimeInterval(-24 * 60 * 60)
var dateComparisonResult: NSComparisonResult = date.compare(yesterday)


if dateComparisonResult == NSComparisonResult.OrderedAscending {
    println("date is smaller than yesterday")
} else if dateComparisonResult == NSComparisonResult.OrderedDescending {
    println("date is larger than yesterday")
} else {
    println("Both dates are the smae")
}