Expr(const T&){};
};
-#ifdef TEMPLATE
template <class T >
inline bool compare(const Expr<T> a, const Expr<T> b){ return true; };
-#else
-inline bool compare(const Expr<int> a, const Expr<int> b){ return true; };
-#endif
void main()
{
vector<int> a(3);
-#if TEMPLATE == 1
sort( a.begin(), a.end(),
static_cast<bool (*)(const Expr<int>,const Expr<int>)>(compare) );
-#elif TEMPLATE == 2
sort( a.begin(), a.end(), compare<int> );
-#elif TEMPLATE == 3
sort<vector<int>::iterator,
pointer_to_binary_function<const Expr<int>, const Expr<int>, bool> >
( a.begin(), a.end(), compare );
-#elif TEMPLATE == 4
sort( a.begin(), a.end(),
ptr_fun<const Expr<int>, const Expr<int>, bool> (compare) );
-#elif TEMPLATE == 5
sort( a.begin(), a.end(),
ptr_fun(compare<int>) );
-#elif TEMPLATE == 6
sort( a.begin(), a.end(),
pointer_to_binary_function<const Expr<int>, const Expr<int>, bool>(compare) );
-#elif TEMPLATE == 7
sort( a.begin(), a.end(),
pointer_to_binary_function<const Expr<int>, const Expr<int>, bool>(compare<int>) );
-#elif TEMPLATE == 8
sort( a.begin(), a.end(),
pointer_to_binary_function<const Expr<int>, const Expr<int>, bool>(compare<>) );
-#else
- sort( a.begin(), a.end(), compare );
-#endif
}