iOS 全局變量?extern 修飾? ?
1.聲明全局變量

2.時(shí)間戳?NSTimeInterval
? NSDate*currentDate = [NSDatedate];

NSTimeIntervalcurrentTime = [currentDatetimeIntervalSince1970];
iOS 全局變量?extern 修飾? ?
1.聲明全局變量
2.時(shí)間戳?NSTimeInterval
? NSDate*currentDate = [NSDatedate];
NSTimeIntervalcurrentTime = [currentDatetimeIntervalSince1970];