Finally, this attempts to convert a string to a date letstring="20:32 Wed, 30 Oct 2019"letformatter4=DateFormatter()formatter4.dateFormat="HH:mm E, d MMM y"print(formatter4.date(from:string)??"Unknown date") date(from:)returns an optionalDatebecause it might be given a string...
letdateString="09-01-2021 12:00:00"letdateFormatter=DateFormatter()dateFormatter.dateFormat="MM-dd-yyyy HH:mm:ss"dateFormatter.locale=Locale(identifier:"en_US_POSIX")ifletdate=dateFormatter.date(from:dateString){print(date)}else{print("Failed to convert string to date")} 1. 2. 3. 4. ...
There are three main ways to convert a Date to a String.Using DateFormatter.Stylelet date = Date() let string = date.string(dateStyle: .shortStyle, timeStyle: .shortStyle)if needed, you can provide a custom locale to perform the conversion:...
How to convert a String to DataSwift version: 5.10 Paul Hudson @twostraws May 28th 2019Many APIs, such as Codable, rely on their text input being provided as a Data rather than a String, but fortunately it only takes one line of code to make that conversion:let data = Data(someString...
The Foundation framework makes it painless to convert a string to a date, but there are a few pitfalls you need to watch out for. The class we use to convert a string to a date in Swift is DateFormatter (or NSDateFormatter if you are using Objective-C).
Convert Date to String using predefined individual date and time styles Date().toString(dateStyle:.none,timeStyle:.short)"6:43 AM"Date().toString(dateStyle:.short,timeStyle:.none)"3/1/17"Date().toString(dateStyle:.short,timeStyle:.short)"3/1/17, 6:43 AM"Date().toString(dateStyle:....
Come for concise literals but stay for Regex builders — a new, declarative approach to string processing. We'll also explore the Unicode models in String and share how Swift Regex can make Unicode-correct... 25:17 Meet distributed actors in Swift WWDC22 iOS, iPadOS, macOS, tvOS, ...
returnformatter.string(from: solarDate!) } 2,使用样例 1 2 print("公历:2017年11月11日") print("农历:\(solarToLunar(year: 2017, month: 11, day: 11))") 二、农历转公历 1,转换类定义 农历转公历稍微麻烦些,这里我将其封装成一个工具类。需要转换时调用 convert 方法,将农历日期的年、月、日...
设置新的DateFormatter的timeZone属性为目标时区。 使用新的DateFormatter的string(from:)方法将日期对象转换为字符串。 以下是一个示例代码,演示了如何将日期从一个时区转换到另一个时区: 代码语言:swift 复制 import Foundation func convertDate(from dateString: String, fromTimeZone: TimeZone, toTimeZone: Time...
Additionally, Objective-C protocols are still class-constrained in Swift, so you cannot make Swift structs or enums directly conform to Objective-C protocols or use them with lightweight generic classes. You will need to explicit convertString as NSString,Array as NSArray, etc. with these proto...