Use tuple instead of vector and pointers.

1 files changed, 31 insertions, 0 deletions

diff --git a/std/tuple.hpp b/std/tuple.hpp
index 9e05d40bc4..b24361c793 100644
--- a/std/tuple.hpp
+++ b/std/tuple.hpp
@@ -5,11 +5,42 @@
 #endif
 
 #include <tuple>
+#include <type_traits>
 
 using std::tuple;
 using std::make_tuple;
 using std::get;
 
+
+template <size_t I = 0, typename FnT, typename... Tp>
+typename std::enable_if<I == sizeof...(Tp), void>::type
+for_each_tuple(std::tuple<Tp...> &, FnT &&)
+{
+}
+
+template <size_t I = 0, typename FnT, typename... Tp>
+typename std::enable_if<I != sizeof...(Tp), void>::type
+for_each_tuple(std::tuple<Tp...> & t, FnT && fn)
+{
+  fn(I, std::get<I>(t));
+  for_each_tuple<I + 1, FnT, Tp...>(t, std::forward<FnT>(fn));
+}
+
+template <size_t I = 0, typename FnT, typename... Tp>
+typename std::enable_if<I == sizeof...(Tp), void>::type
+for_each_tuple_const(std::tuple<Tp...> const &, FnT &&)
+{
+}
+
+template <size_t I = 0, typename FnT, typename... Tp>
+typename std::enable_if<I != sizeof...(Tp), void>::type
+for_each_tuple_const(std::tuple<Tp...> const & t, FnT && fn)
+{
+  fn(I, std::get<I>(t));
+  for_each_tuple_const<I + 1, FnT, Tp...>(t, std::forward<FnT>(fn));
+}
+
+
 #ifdef DEBUG_NEW
 #define new DEBUG_NEW
 #endif