25.random.shuffle.stdcxx-126.cpp

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#include <algorithm>
#include <iterator>
 
 
template <class IntT>
struct DiffConvertible
{
    DiffConvertible (IntT) { }
    operator IntT () const { return IntT (); }
 
private:
    template <class T> DiffConvertible (T);   // not defined
};
 
 
template <class IntT>
struct Generator
{
    DiffConvertible<IntT> operator() (IntT n) {
        return DiffConvertible<IntT>(n);
    }
 
private:
    template <class T> void operator() (T);   // not defined
};
 
 
// not defined
template <class IntT, class T> void operator+ (T, DiffConvertible<IntT>);
template <class IntT, class T> void operator+ (T, DiffConvertible<IntT>);
 
int main ()
{
    Generator<std::iterator_traits<int*>::difference_type> gen;
 
    int a = 0;
 
    std::random_shuffle<int*>(&a, &a, gen);
 
    return 0;
}