1 - (id) initWithTitle:(NSString *)title items:(MXContextMenuItem *)item, ... NS_REQUIRES_NIL_TERMINATION;  

 1 //.h
 2 - (NSString *)addMoreArguments:(NSString *)firstStr,...NS_REQUIRES_NIL_TERMINATION;
 3
 4 //.m
 5 - (NSString *)addMoreArguments:(NSString *)firstStr,...
 6 {
 7     va_list args;
 8     va_start(args, firstStr); // scan for arguments after firstObject.
 9
10     // get rest of the objects until nil is found
11     NSMutableString *allStr = [[[NSMutableString alloc] initWithCapacity:16] autorelease];
12     for (NSString *str = firstStr; str != nil; str = va_arg(args,NSString*)) {
13         [allStr appendFormat:@"* %@ ",str];
14     }
15
16     va_end(args);
17     return allStr;
18 }
19
20 //test
21 NSString *str = [self addMoreArguments:@"hello",@"world",@"this",@"is",@"a",@"test", nil];
22 NSLog(@"str = %@",str);
23 //output: str = * hello * world * this * is * a * test  

 1 #import <Cocoa/Cocoa.h>
 2
 3 @interface NSMutableArray (variadicMethodExample)
 4
 5 - (void) appendObjects:(id) firstObject, ...; // This method takes a nil-terminated list of objects.
 6
 7 @end
 8
 9 @implementation NSMutableArray (variadicMethodExample)
10
11 - (void) appendObjects:(id) firstObject, ...
12 {
13 id eachObject;
14 va_list argumentList;
15 if (firstObject) // The first argument isn't part of the varargs list,
16   {                                   // so we'll handle it separately.
17   [self addObject: firstObject];
18   va_start(argumentList, firstObject); // Start scanning for arguments after firstObject.
19   while (eachObject = va_arg(argumentList, id)) // As many times as we can get an argument of type "id"
20       [self addObject: eachObject]; // that isn't nil, add it to self's contents.
21   va_end(argumentList);
22   }
23 }
24
25 @end