【Swift】日期比较函数 记录下 Comparing date in Swift

Add this code to your project and comparing dates is easier than ever

扩展NSDATE

//swift 3.0.2

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extension NSDate {     func isGreaterThanDate(dateToCompare : NSDate) -> Bool     {         var isGreater = false         if self.compare(dateToCompare as Date) == ComparisonResult.orderedDescending         { isGreater = true }         return isGreater     }           func isLessThanDate(dateToCompare : NSDate) -> Bool     {         var isLess = false         if self.compare(dateToCompare as Date) == ComparisonResult.orderedAscending         { isLess = true }         return isLess     }           func addDays(daysToAdd : Int) -> NSDate     {         let secondsInDays : TimeInterval = Double(daysToAdd) * 60 * 60 * 24         let dateWithDaysAdded : NSDate = self.addingTimeInterval(secondsInDays)         return dateWithDaysAdded     }           func addHours(hoursToAdd : Int) -> NSDate     {         let secondsInHours : TimeInterval = Double(hoursToAdd) * 60 * 60         let dateWithHoursAdded : NSDate = self.addingTimeInterval(secondsInHours)         return dateWithHoursAdded     } }

 

t’s easy to use. Here’s a couple of examples

在.SWIFT调用就行了，EASY的很！

 

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var today = NSDate() var oneHourFromNow = today.addHours(1) if today.isGreaterThanDate(oneHourFromNow) {   println("Something is terrebly wrong.") } var aWeekFromNow = today.addDays(7)

 

原文链接：http://myxcode.net/2015/08/30/comparing-dates-in-swift/