Update reference to Robert C. Martin's "Acyclic Visitor" paper.
authorRichard Kreckel <kreckel@ginac.de>
Mon, 18 Apr 2016 20:18:20 +0000 (22:18 +0200)
committerRichard Kreckel <kreckel@ginac.de>
Mon, 18 Apr 2016 20:18:20 +0000 (22:18 +0200)
The source at objectmentor.com has been unavailble for a long while.

ginac/basic.h

index 3ae3282..1af6f85 100644 (file)
@@ -92,7 +92,8 @@ struct map_function {
 
 /** Degenerate base class for visitors. basic and derivative classes
  *  support Robert C. Martin's Acyclic Visitor pattern (cf.
- *  http://objectmentor.com/publications/acv.pdf). */
+ *  http://condor.depaul.edu/dmumaugh/OOT/Design-Principles/acv.pdf
+ *  or chapter 10 of Andrei Alexandrescu's "Modern C++ Design"). */
 class visitor {
 protected:
        virtual ~visitor() {}