all tasks

Task/Variadic-function/Objective-C/variadic-function.m

@@ -0,0 +1,17 @@
+#include <stdarg.h>
+
+void logObjects(id firstObject, ...) // <-- there is always at least one arg, "nil", so this is valid, even for "empty" list
+{
+  va_list args;
+  va_start(args, firstObject);
+  id obj;
+  for (obj = firstObject; obj != nil; obj = va_arg(args, id))
+    NSLog(@"%@", obj);
+  va_end(args);
+}
+
+// This function can be called with any number or type of objects, as long as you terminate it with "nil":
+logObjects(@"Rosetta", @"Code", @"Is", @"Awseome!", nil);
+logObjects([NSNumber numberWithInt:4],
+           [NSNumber numberWithInt:3],
+           @"foo", nil);