ManagerVistorvoid visit(AutoCIIE)void vist(ArtCIIE)
StudentVistorvoid visit(AutoCIIE)void vist(ArtCIIE)
ArtCIIEvoid accept(IVistor)
...
进博会展馆接口
CIIEvoid accept(Ivistor)
访问者接口
void accept(IVistor)
IVistor
Vistor模式实践
......
AutoCIIEvoid accept(IVistor)
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