 {
   auto t0 = std::make_tuple(0, 2, 3.14);
 
-  auto t1 = thrust::tuple_subset(t0, std::index_sequence<2, 0>{}); 
+  auto t1 = thrust::tuple_subset(t0, thrust::index_sequence<2, 0>{});
 
   ASSERT_EQUAL_QUIET(t1, std::make_tuple(3.14, 0));
 }

{
  auto t0 = std::make_tuple(0, 2, 3.14);

  auto t1 = thrust::tuple_transform(t0, custom_square{}); 

  ASSERT_EQUAL_QUIET(t1, std::make_tuple(0, 4, 9.8596));
}

#include <unittest/unittest.h>

#include <thrust/detail/tuple_algorithms.h>
#include <thrust/type_traits/integer_sequence.h>

// FIXME: Replace with C++14 style `thrust::square<>` when we have it.
struct custom_square
{
  template <typename T>
  __host__ __device__
  T operator()(T v) const
  {
    return v * v;
  }
};

struct custom_square_inplace
{
  template <typename T>
  __host__ __device__
  void operator()(T& v) const
  {
    v *= v;
  }
};

