From 3d6f7b412a2025dcc2181b152765f172475b4106 Mon Sep 17 00:00:00 2001
From: Peter Newman <peternewman@users.noreply.github.com>
Date: Sat, 18 Apr 2026 17:06:59 +0100
Subject: [PATCH] Revert "Revert "Replace a few more deprecated pre-C++11
 styles""

---
 common/utils/StringUtils.cpp | 4 ++--
 include/ola/ExportMap.h      | 3 +--
 include/olad/Plugin.h        | 3 +--
 3 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/common/utils/StringUtils.cpp b/common/utils/StringUtils.cpp
index 749ad79676..d01ac72e12 100644
--- a/common/utils/StringUtils.cpp
+++ b/common/utils/StringUtils.cpp
@@ -454,12 +454,12 @@ bool HexStringToInt(const string &value, int64_t *output) {
 
 void ToLower(string *s) {
   std::transform(s->begin(), s->end(), s->begin(),
-                 std::ptr_fun<int, int>(std::tolower));
+                 [](int value){return std::tolower(value);});
 }
 
 void ToUpper(string *s) {
   std::transform(s->begin(), s->end(), s->begin(),
-                 std::ptr_fun<int, int>(std::toupper));
+                 [](int value){return std::toupper(value);});
 }
 
 void CapitalizeLabel(string *s) {
diff --git a/include/ola/ExportMap.h b/include/ola/ExportMap.h
index 284eb9ae3d..3e4e810d46 100644
--- a/include/ola/ExportMap.h
+++ b/include/ola/ExportMap.h
@@ -77,8 +77,7 @@ class BaseVariable {
   std::string m_name;
 };
 
-struct VariableLessThan: public std::binary_function<BaseVariable*,
-                                                     BaseVariable*, bool> {
+struct VariableLessThan {
   bool operator()(BaseVariable *x, BaseVariable *y) {
     return x->Name() < y->Name();
   }
diff --git a/include/olad/Plugin.h b/include/olad/Plugin.h
index 623718a2ca..163e0ad772 100644
--- a/include/olad/Plugin.h
+++ b/include/olad/Plugin.h
@@ -107,8 +107,7 @@ class AbstractPlugin {
 };
 
 
-struct PluginLessThan: public std::binary_function<AbstractPlugin*,
-                                                   AbstractPlugin*, bool> {
+struct PluginLessThan {
   bool operator()(AbstractPlugin *x, AbstractPlugin *y) {
     return x->Id() < y->Id();
   }