The Void object is the unique singleton object that returns RC_Void to all requests.
The Void key occurs whenever a key register or node slot holds no other key. Void keys are created in a variety of ways:
The void key returns RC_Void to all requests. By (strong) convention, the RC_Void return code is generally avoided by other objects in order to allow callers to discern when an object has been destroyed.
Copyright 2001 by Jonathan Shapiro. All rights reserved. For terms of redistribution, see the GNU General Public License