Method declaration is different from general declaration

Question

When debugging i found this method.

   - (void)sendPublicEvent:(NSInteger)type, ... KNCONTANT_VALUE

The method declaration is different from generation method declaration.

I do not understand why it postfix after type ,... KNCONTANT_VALUE` I want to know why method declaration is different,any one advice me! @thanks in Advance

Answer 1

This method is taking a variable argument.

See this example:

In .h

-(void)variableArgument:(NSString *)string, ...;

In .m

- (void)variableArgument:(NSString *)string, ... {
  va_list args;
  va_start(args, string);
  NSLogv(string, args);
  va_end(args);
}

And KNCONTANT_VALUE is showing that this should be your last constant value after the Integer values.

When we deal with strings we use : -(void)variableArgument:(NSString *)string, ... NS_REQUIRES_NIL_TERMINATION;