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Associated article: Extending the Visitor Design Pattern

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Published source code accompanying Matthew Nguyen's article on extending the Gamma/Helm Visitor design pattern. Matthew extends the Visitor pattern by adding conditional intelligence. 

					_Extending the Visitor Design Pattern_
by Matthew Nguyen


Listing One
Loop on ElementList
    if ( Visitor.ApplyConditionals( Element(i) )
        Visitor.Visit( Element(i) )
    else
        Visitor.ElseVisit( Element(i) )
End Loop

Listing Two
class Visitor
{
public :
    Visitor(){ m_pOperator = &globalAndOperator };
    ~Visitor(){};
    ...
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