From 2862b3b247abb2727ea6724bd456879e2bfdb111 Mon Sep 17 00:00:00 2001
From: John Wellbelove <john.wellbelove@etlcpp.co.uk>
Date: Wed, 21 Jan 2026 09:50:15 +0100
Subject: [PATCH] Added etl::type_list to etl::nth_type

---
 include/etl/nth_type.h |  8 ++++++++
 test/test_nth_type.cpp | 11 +++++++++++
 2 files changed, 19 insertions(+)

diff --git a/include/etl/nth_type.h b/include/etl/nth_type.h
index 01f2a6e8..20c4d2d9 100644
--- a/include/etl/nth_type.h
+++ b/include/etl/nth_type.h
@@ -31,6 +31,7 @@ SOFTWARE.
 
 #include "platform.h"
 #include "static_assert.h"
+#include "type_list.h"
 
 #if ETL_USING_CPP11
 namespace etl
@@ -60,6 +61,13 @@ namespace etl
     using type = typename private_nth_type::nth_type_helper<Index, TTypes...>::type;
   };
 
+  //***********************************
+  template <size_t Index, typename... TTypes>
+  struct nth_type<Index, etl::type_list<TTypes...>> : public nth_type<Index, TTypes...>
+  {
+    using nth_type<Index, TTypes...>::type;
+  };
+
   //***********************************
   template <size_t Index, typename... TTypes>
   using nth_type_t = typename nth_type<Index, TTypes...>::type;
diff --git a/test/test_nth_type.cpp b/test/test_nth_type.cpp
index a5339292..843d7607 100644
--- a/test/test_nth_type.cpp
+++ b/test/test_nth_type.cpp
@@ -29,6 +29,7 @@ SOFTWARE.
 #include "unit_test_framework.h"
 
 #include "etl/nth_type.h"
+#include "etl/type_list.h"
 #include <type_traits>
 
 namespace
@@ -42,5 +43,15 @@ namespace
       CHECK((std::is_same<etl::nth_type_t<1, int, long, double>, long>::value));
       CHECK((std::is_same<etl::nth_type_t<2, int, long, double>, double>::value));
     }
+
+    //*************************************************************************
+    TEST(test_nth_type_from_type_list)
+    {
+      using types = etl::type_list<int, long, double>;
+
+      CHECK((std::is_same<etl::nth_type_t<0, types>, int>::value));
+      CHECK((std::is_same<etl::nth_type_t<1, types>, long>::value));
+      CHECK((std::is_same<etl::nth_type_t<2, types>, double>::value));
+    }
   }
 }