2014/10/15 下午 10:05:54

iphone Programming Glossary: d1

http://stackoverflow.com/questions/1052951/fuzzy-date-algorithm-in-objective-c

60 SECOND #define HOUR 60 MINUTE #define DAY 24 HOUR #define MONTH 30 DAY NSString timeIntervalWithStartDate NSDate d1 withEndDate NSDate d2 Calculate the delta in seconds between the two dates NSTimeInterval delta d2 timeIntervalSinceDate.. NSDate d2 Calculate the delta in seconds between the two dates NSTimeInterval delta d2 timeIntervalSinceDate d1 if delta 1 MINUTE return delta 1 @ one second ago NSString stringWithFormat @ d seconds ago int delta if delta 2 MINUTE..

NSArray of Dates sort

http://stackoverflow.com/questions/1613863/nsarray-of-dates-sort

some example code. NSInteger dateSort id s1 id s2 void context NSDateFormatter format NSDateFormatter context NSDate d1 format dateFromString s1 NSDate d2 format dateFromString s2 return d1 compare d2 ... void someObjectiveCMethod NSDateFormatter.. format NSDateFormatter context NSDate d1 format dateFromString s1 NSDate d2 format dateFromString s2 return d1 compare d2 ... void someObjectiveCMethod NSDateFormatter format NSDateFormatter alloc init autorelease Find theses format..

how to convert array of bytes to base64 String in iphone?

http://stackoverflow.com/questions/6466083/how-to-convert-array-of-bytes-to-base64-string-in-iphone

individual bytes using memcpy and then creating an array but with no success. What I have tried is as follows NSData d1 @ 64 dataUsingEncoding NSUTF16StringEncoding NSData d2 @ 37 dataUsingEncoding NSUTF16StringEncoding NSData d3 @ 81 dataUsingEncoding.. NSData d4 @ d4 dataUsingEncoding NSUTF16StringEncoding unsigned char buffer unsigned char malloc 8 buffer 0 d1 bytes buffer 1 d2 bytes buffer 2 d3 bytes buffer 3 d4 bytes NSData data NSData dataWithBytes buffer length 4 NSString str..

Using @min,@max and etc inside a predicate?

http://stackoverflow.com/questions/6515167/using-min-max-and-etc-inside-a-predicate

have support for at least some of the collection operators though. Here's a simple example that works NSDictionary d1 NSDictionary dictionaryWithObject NSNumber numberWithInt 35 forKey @ score NSDictionary d2 NSDictionary dictionaryWithObject.. d4 NSDictionary dictionaryWithObject NSNumber numberWithInt 19 forKey @ score NSArray array NSArray arrayWithObjects d1 d2 d3 d4 nil NSPredicate predicate NSPredicate predicateWithFormat @ SELF.score @.@min.score array NSLog @ Min dictionaries..