From b0332011bb2663fc74bdae99c1c3e48862292fcc Mon Sep 17 00:00:00 2001
From: Magic-Xin <x.yu2000@163.com>
Date: Tue, 19 Sep 2023 06:02:14 +0800
Subject: [PATCH] Updated to C++17 standard

---
 src/mecab/src/dictionary.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/mecab/src/dictionary.cpp b/src/mecab/src/dictionary.cpp
index cd98ef0..1df0eba 100644
--- a/src/mecab/src/dictionary.cpp
+++ b/src/mecab/src/dictionary.cpp
@@ -65,9 +65,9 @@ int progress_bar_darts(size_t current, size_t total) {
 }
 
 template <typename T1, typename T2>
-struct pair_1st_cmp: public std::__binary_function<bool, T1, T2> {
+struct pair_1st_cmp {
   bool operator()(const std::pair<T1, T2> &x1,
-                  const std::pair<T1, T2> &x2)  {
+                  const std::pair<T1, T2> &x2) const {
     return x1.first < x2.first;
   }
 };