ChefZ -- 磨劍錄 (A Coder's Log)

// checked_cast - Uses fast static_cast in Release build,

// but checks cast with an ASSERT in Debug.

//

// Typical usage:

//   class Foo { /* ... */  };

//   class Bar : public Foo { /* ... */  };

//   Foo * pFoo = new Bar;

//   Bar * pBar = checked_cast<Bar *>(pFoo);

template <class TypeTo, class TypeFrom>                                         

TypeTo checked_cast(TypeFrom p)                                                 

{ 

        ASSERT(dynamic_cast<TypeTo>(p));                                        

        return static_cast<TypeTo>(p);                                          

}