Swift 处理时间和日期的开源三方库。示例代码： ```swift // All default datetime formats (15+) are recognized automatically let _ = "2010-05-20 15:30:00".toDate() // You can also provide your own format! let _ = "2010-05-20 15:30".toDate("yyyy-MM-dd HH:mm") // All ISO8601 variants are supported too with timezone parsing! let _ = "2017-09-17T11:59:29+02:00".toISODate() // RSS, Extended, HTTP, SQL, .NET and all the major variants are supported! let _ = "19 Nov 2015 22:20:40 +0100".toRSS(alt: true) ```