From dcb13866309c988037f7a04e1c37047fe434c12c Mon Sep 17 00:00:00 2001
From: Olivier Parcollet <olivier.parcollet@cea.fr>
Date: Mon, 21 Oct 2013 21:52:05 +0200
Subject: [PATCH] arrays const_matrix_tensor_proxy delete =

---
 triqs/arrays/matrix_tensor_proxy.hpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/triqs/arrays/matrix_tensor_proxy.hpp b/triqs/arrays/matrix_tensor_proxy.hpp
index ba697e87..99e02747 100644
--- a/triqs/arrays/matrix_tensor_proxy.hpp
+++ b/triqs/arrays/matrix_tensor_proxy.hpp
@@ -62,6 +62,8 @@ namespace arrays {
   view_type operator()() const { return *this; }
   template <typename... Args> value_type const &operator()(Args &&... args) const { return a(n, std::forward<Args>(args)...); }
 
+  template <typename RHS> const_matrix_tensor_proxy &operator=(const RHS &X) =delete; // can not assign to a const 
+
   TRIQS_DELETE_COMPOUND_OPERATORS(const_matrix_tensor_proxy);
   friend std::ostream &operator<<(std::ostream &out, const_matrix_tensor_proxy const &x) { return out << view_type(x); }
  };