From 7698e54b188bba2010c85ecdc318d073748715b6 Mon Sep 17 00:00:00 2001
From: lisyarus <lisyarus@gmail.com>
Date: Sat, 16 Jan 2021 22:42:55 +0300
Subject: [PATCH] Support indexing zero-dimensional matrices

---
 libs/geom/include/psemek/geom/detail/array.hpp | 2 ++
 libs/geom/include/psemek/geom/matrix.hpp       | 4 ++--
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/libs/geom/include/psemek/geom/detail/array.hpp b/libs/geom/include/psemek/geom/detail/array.hpp
index 0fb73944..53cf4895 100644
--- a/libs/geom/include/psemek/geom/detail/array.hpp
+++ b/libs/geom/include/psemek/geom/detail/array.hpp
@@ -27,6 +27,8 @@ namespace psemek::geom::detail
 		{
 			T const & operator[](std::size_t) const { throw empty_array_exception{}; }
 			T & operator[](std::size_t) { throw empty_array_exception{}; }
+
+			type operator + (std::size_t) const { return *this; }
 		};
 	};
 
diff --git a/libs/geom/include/psemek/geom/matrix.hpp b/libs/geom/include/psemek/geom/matrix.hpp
index 3f8d7059..2d99fb70 100644
--- a/libs/geom/include/psemek/geom/matrix.hpp
+++ b/libs/geom/include/psemek/geom/matrix.hpp
@@ -18,12 +18,12 @@ namespace psemek::geom
 
 		detail::array<T, R * C>::type coords;
 
-		T * operator[](std::size_t i)
+		auto operator[](std::size_t i)
 		{
 			return coords + C * i;
 		}
 
-		T const * operator[](std::size_t i) const
+		auto operator[](std::size_t i) const
 		{
 			return coords + C * i;
 		}