Geant4  10.03
CompileTimeConstraints.hh
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26 #ifndef CompileTimeConstraints_hh
27 #define CompileTimeConstraints_hh
28 
30 {
31  template <class Base> char InheritsFrom(Base *);
32  template <class Derived> Derived* DerivedPointer();
33  template < class A, class B > struct IsA
34  {
35  public:
36  enum { ok=(sizeof(InheritsFrom<B>(DerivedPointer<A>())) ) };
37  };
38 }
39 
40 #endif
char InheritsFrom(Base *)
Derived * DerivedPointer()