Passing on a variable arg list
Passing on a variable arg list
- Subject: Passing on a variable arg list
- From: Charlie Dickman <email@hidden>
- Date: Thu, 26 Apr 2012 22:15:20 -0400
Good people,
In standard C a variable argument list can be passed on to a called function as follows...
func2(type1 arg1, char *f, ...) {
va_list(ap);
va_start(ap, f1);
func2_guts(arg1, f, args);
va_end(ap);
}
func2_guts(type1 arg, char *f, va_list ap) {
.
.
.
}
In func2_guts ap enters as an already prepared va_list so no va_list or va_start or va_end is needed.
How does one do this in Xcode Objective C? To be clear, I 'm not asking how to use variable arg lists as I already know how to do that. I am asking how to pass a variable arg list in 1 function on to a second one?
I can not find the documentation on how to do this.
P.S. A variadic macro can't be used because the arg lists are not known at compile time.
Charlie Dickman
email@hidden
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