Swift:使用strftime和localtime进行NSDate格式化

Question

如何将以下Objective-C代码转换为Swift代码？

#define MAX_SIZE 11
char buffer[MAX_SIZE];
time_t time = [[NSDate date] timeIntervalSince1970];
strftime(buffer, MAX_SIZE, "%-l:%M\u2008%p", localtime(&time));
NSString *dateString = [NSString stringWithUTF8String:buffer];
NSLog(@"dateString: %@", dateString); // dateString: 11:56?PM

我正在格式化date.

Answer 1

正如评论员@BryanChen和@JasonCoco所说,使用NSDateFormatter.

let dateFormatter = NSDateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd 'at' h:mm a" // superset of OP's format
let str = dateFormatter.stringFromDate(NSDate())

"数据格式指南"中提供了格式字符串的完整说明 .

Answer 2

    let maxSize: UInt = 11\n    var buffer: CChar[] = CChar[](count: Int(maxSize), repeatedValue: 0)\n    var time: time_t = Int(NSDate().timeIntervalSince1970)\n    var length = strftime(&buffer, maxSize, "%-l:%M\\u2008%p", localtime(&time))\n    var dateString = NSString(bytes: buffer, length: Int(length), encoding: NSUTF8StringEncoding)\n    NSLog("dateString: %@", dateString) // dateString: 11:56\xe2\x80\x88PM\n

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