From 7fe5ef9649f6ee997f3ef91ded13535449db0b2b Mon Sep 17 00:00:00 2001
From: Stephan Hageboeck <stephan.hageboeck@cern.ch>
Date: Mon, 16 Oct 2023 09:35:53 +0200
Subject: [PATCH] Add a const to a range-based for loop.

---
 talk/basicconcepts/control.tex | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/talk/basicconcepts/control.tex b/talk/basicconcepts/control.tex
index 7e83b449..42e7e43a 100644
--- a/talk/basicconcepts/control.tex
+++ b/talk/basicconcepts/control.tex
@@ -240,7 +240,7 @@
   \end{alertblock}
   \begin{exampleblock}{\cpp20}
     \begin{cppcode*}{firstnumber=6}
-      for (std::size_t i = 0; auto& d : data) {
+      for (std::size_t i = 0; auto const & d : data) {
         std::cout << i++ << ' ' << d << '\n';
       }
     \end{cppcode*}