From 6fd9476cd79c85a322fe1ef8153ccd7d0d9864bf Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?S=C3=A9bastien=20Loriot?= <sebastien.loriot@cgal.org>
Date: Sun, 23 Apr 2023 21:15:38 +0200
Subject: [PATCH] boost::is_integral -> std::is_integral

---
 .../demo/Polyhedron/Plugins/Mesh_3/Io_image_plugin.cpp      | 6 +++---
 STL_Extension/include/CGAL/transforming_iterator.h          | 4 +---
 2 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/Polyhedron/demo/Polyhedron/Plugins/Mesh_3/Io_image_plugin.cpp b/Polyhedron/demo/Polyhedron/Plugins/Mesh_3/Io_image_plugin.cpp
index 68c3053d876..67da801ae91 100644
--- a/Polyhedron/demo/Polyhedron/Plugins/Mesh_3/Io_image_plugin.cpp
+++ b/Polyhedron/demo/Polyhedron/Plugins/Mesh_3/Io_image_plugin.cpp
@@ -855,18 +855,18 @@ private:
   template<typename T>
   void switchReaderConverter(std::pair<T, T> minmax)
   {
-    switchReaderConverter(minmax, typename boost::is_integral<T>::type());
+    switchReaderConverter(minmax, typename std::is_integral<T>::type());
   }
 
   template<typename T>
-  void switchReaderConverter(std::pair<T, T> minmax, boost::true_type)
+  void switchReaderConverter(std::pair<T, T> minmax, std::true_type)
   {
     // IntConverter
     IntConverter x = { minmax }; pxr_.setIC(x);
   }
 
   template<typename T>
-  void switchReaderConverter(std::pair<T, T> minmax, boost::false_type)
+  void switchReaderConverter(std::pair<T, T> minmax, std::false_type)
   {
     // IntConverter
     DoubleConverter x = { minmax }; pxr_.setFC(x);
diff --git a/STL_Extension/include/CGAL/transforming_iterator.h b/STL_Extension/include/CGAL/transforming_iterator.h
index 97287711aec..fe61368ddfb 100644
--- a/STL_Extension/include/CGAL/transforming_iterator.h
+++ b/STL_Extension/include/CGAL/transforming_iterator.h
@@ -12,9 +12,7 @@
 #ifndef CGAL_TRANSFORMING_ITERATOR_H
 #define CGAL_TRANSFORMING_ITERATOR_H
 #include <boost/iterator/iterator_adaptor.hpp>
-#include <boost/type_traits/is_empty.hpp>
 #include <boost/type_traits/is_reference.hpp>
-#include <boost/type_traits/is_integral.hpp>
 #include <boost/mpl/if.hpp>
 #include <boost/mpl/or.hpp>
 #include <CGAL/Default.h>
@@ -60,7 +58,7 @@ class transforming_iterator_helper
         // Crappy heuristic. If we have *it that returns a Weighted_point and F that returns a reference to the Point contained in the Weighted_point it takes as argument, we do NOT want the transformed iterator to return a reference to the temporary *it. On the other hand, if *it returns an int n, and F returns a reference to array[n] it is not so good to lose the reference. This probably should be done elsewhere and should at least be made optional...
         typedef typename boost::mpl::if_<
           boost::mpl::or_<boost::is_reference<Iter_ref>,
-                          boost::is_integral<Iter_ref> >,
+                          std::is_integral<Iter_ref> >,
           reference_, value_type>::type reference;
 
         public: