chore: Add course material

2026-10-05 11:27:21 +02:00
parent 971813c351
commit e8241fd1ff
660 changed files with 26658 additions and 1 deletions
@@ -0,0 +1,20 @@
+// EntryVisitor.h
+
+#ifndef ENTRYVISITOR_H
+#define ENTRYVISITOR_H
+
+class PersonEntry;
+class CompanyEntry;
+class GroupEntry;
+
+class EntryVisitor {
+  public:
+    virtual void visit(const PersonEntry &) = 0;
+    virtual void visit(const CompanyEntry &) = 0;
+    virtual void visit(const GroupEntry &) = 0;
+
+    virtual void unVisit(const GroupEntry &) {
+    } // In some cases, the composite node may need special processing after delegation to children
+};
+
+#endif