From 42bef16cfac893d5f628e5218c82236e9e694248 Mon Sep 17 00:00:00 2001
From: Thorbjørn Lindeijer <bjorn@lindeijer.nl>
Date: Thu, 16 Jun 2022 12:31:24 +0200
Subject: Removed usage of deprecated std::unary_function

Appears to have been entirely unnecessary.
---
 src/utils/functors.h | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

(limited to 'src')

diff --git a/src/utils/functors.h b/src/utils/functors.h
index fce3bec5..b349dcf9 100644
--- a/src/utils/functors.h
+++ b/src/utils/functors.h
@@ -21,7 +21,6 @@
 #ifndef FUNCTORS_H
 #define FUNCTORS_H
 
-#include <functional>
 #include <sstream>
 #include <string>
 
@@ -33,10 +32,9 @@ namespace
  * std::istringstream.operator>>().
  */
 template <typename T>
-struct string_to: public std::unary_function<std::string, T>
+struct string_to
 {
-    T
-    operator()(const std::string& s) const
+    T operator()(const std::string& s) const
     {
         std::istringstream is(s);
         T value;
-- 
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