2014/10/15 下午 10:15:43

iphone Programming Glossary: va_arg

http://stackoverflow.com/questions/10502539/objective-c-category-and-new-ivar

initWithCapacity 5 va_list params va_start params filename while filename soundsInChain addObject filename filename va_arg params NSString va_end params currentSound 0 self cdAudioSourceDidFinishPlaying nil play first file this will also always..

UIActionSheet addButtonWithTitle: doesn't add buttons in the right order

http://stackoverflow.com/questions/1262205/uiactionsheet-addbuttonwithtitle-doesnt-add-buttons-in-the-right-order

firstButton nil if firstButton id buttonTitle va_list argList va_start argList firstButtton while buttonTitle va_arg argList id self addButtonWithTitle buttonTitle va_end argList return self However my specific use in this case has no destructive.. nil if firstButton id buttonTitle int idx 0 va_list argList va_start argList firstButtton while buttonTitle va_arg argList id self addButtonWithTitle buttonTitle idx va_end argList self addButtonWithTitle cancel self addButtonWithTitle..

NSString stringWithFormat swizzled to allow missing format numbered args

http://stackoverflow.com/questions/2946649/nsstring-stringwithformat-swizzled-to-allow-missing-format-numbered-args

args return s NSMutableArray newArgs NSMutableArray arrayWithCapacity NUMARGS args id arg nil int i 1 while arg va_arg args id NSString f NSString stringWithFormat @ d @ i i if format rangeOfString f .location NSNotFound continue else newArgs.. with your current implementation at a glance The __VA_ARGS__ thingy explained in the comments. When you use while arg va_arg args id you are assuming that the arguments are nil terminated such as for arrayWithObjects but with stringWithFormat this..

Dismissing UIAlertViews when entering background state

http://stackoverflow.com/questions/3105974/dismissing-uialertviews-when-entering-background-state

args otherButtonTitles for NSString anOtherButtonTitle otherButtonTitles anOtherButtonTitle nil anOtherButtonTitle va_arg args NSString self addButtonWithTitle anOtherButtonTitle privateDelegate delegate return self void dealloc privateDelegate..