Marked output_proxy assignment as const.

This is also required for compliance with std::output_iterator concept.
boostorg · Oct 10, 2024 · 7c55a6c · 7c55a6c
1 parent 1ea8087
commit 7c55a6c
Showing 1 changed file with 4 additions and 4 deletions.
diff --git a/include/boost/iterator/function_output_iterator.hpp b/include/boost/iterator/function_output_iterator.hpp
@@ -37,17 +37,17 @@ namespace iterators {
       template <class T>
       typename boost::disable_if_c<
         boost::is_same< typename boost::remove_cv< T >::type, output_proxy >::value,
-        output_proxy&
-      >::type operator=(const T& value) {
+        output_proxy const&
+      >::type operator=(const T& value) const {
         m_f(value);
         return *this;
       }
 #else
       template <class T>
       typename boost::disable_if_c<
         boost::is_same< typename boost::remove_cv< typename boost::remove_reference< T >::type >::type, output_proxy >::value,
-        output_proxy&
-      >::type operator=(T&& value) {
+        output_proxy const&
+      >::type operator=(T&& value) const {
         m_f(static_cast< T&& >(value));
         return *this;
       }