refs #290 added some new predicates and transform functions to use in combination with the iterator adaptors.

This required refactoring index_sequence out of tuple_private.h so it could be used by the predicates.

src/blackmisc/index_sequence.h

@@ -0,0 +1,46 @@
+/* Copyright (C) 2014 VATSIM Community / authors
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef BLACKMISC_INDEX_SEQUENCE_H
+#define BLACKMISC_INDEX_SEQUENCE_H
+
+#include <tuple>
+#include <type_traits>
+
+namespace BlackMisc
+{
+    namespace Private
+    {
+
+        // Inhibit doxygen warnings about missing documentation
+        //! \cond PRIVATE
+
+        // Our own implementation of std::index_sequence (because not implemented by MSVC2013)
+        template <size_t... Is>
+        struct index_sequence
+        {
+            static const size_t size = sizeof...(Is);
+            typedef std::tuple<std::integral_constant<size_t, Is>...> tuple_type;
+        };
+        template <size_t I, size_t C, size_t... Is>
+        struct GenSequence
+        {
+            typedef typename GenSequence<I + 1, C, Is..., I>::type type;
+        };
+        template <size_t C, size_t... Is>
+        struct GenSequence<C, C, Is...>
+        {
+            typedef index_sequence<Is...> type;
+        };
+        template <size_t C>
+        using make_index_sequence = typename GenSequence<0, C>::type;
+
+        //! \endcond
+
+    } // namespace Private
+
+} // namespace BlackMisc
+
+#endif // guard