From 6e1da5eed392d8a650dd620a47ac512dbd0597fe Mon Sep 17 00:00:00 2001
From: Christian Zimmermann <christian.zimmermann@ur.de>
Date: Sun, 29 Apr 2018 17:41:28 +0200
Subject: [PATCH] add Scalar<T> + cast to T

---
 src/include/multi_array.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/include/multi_array.h b/src/include/multi_array.h
index 014976c..120877c 100644
--- a/src/include/multi_array.h
+++ b/src/include/multi_array.h
@@ -50,6 +50,8 @@ namespace MultiArrayTools
 	
 	virtual const T* data() const override;
 	virtual T* data() override;
+
+	operator T() const;	
 	
 	template <typename U, class... SRanges2>
 	friend class MultiArray;
@@ -57,6 +59,9 @@ namespace MultiArrayTools
     private:
 	std::vector<T> mCont;
     };
+
+    template <typename T>
+    using Scalar = MultiArray<T>;
     
 }
 
@@ -193,6 +198,13 @@ namespace MultiArrayTools
     {
 	return mCont.data();
     }
+
+    template <typename T, class... SRanges>
+    MultiArray<T,SRanges...>::operator T() const
+    {
+	static_assert( sizeof...(SRanges) == 0, "try to cast non-scalar type into scalar" );
+	return mCont[0];
+    }
 }
 
 #endif