iOS: NSString的方法initWithFormat:locale:arguments:

- (id)initWithFormat:(NSString *)format locale:(id)locale arguments:(va_list)argList

va_list myArgs;

 

NSString *myString = [[NSString alloc] initWithFormat:@"%@:  %d\n"

        locale:[[NSUserDefaults standardUserDefaults] dictionaryRepresentation]

        arguments:myArgs];

The resulting string has the value “Cost: 32\n”.