From 50bbb3729b350392021d95259b99d401a85686ea Mon Sep 17 00:00:00 2001
From: Chinmay Garde <chinmaygarde@gmail.com>
Date: Thu, 13 Jun 2019 12:12:15 -0700
Subject: [PATCH] Avoid using std::unary_function

---
 third_party/txt/src/utils/LruCache.h | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/third_party/txt/src/utils/LruCache.h b/third_party/txt/src/utils/LruCache.h
index 95ee8aa145031..cb2adb7ddc895 100644
--- a/third_party/txt/src/utils/LruCache.h
+++ b/third_party/txt/src/utils/LruCache.h
@@ -85,14 +85,13 @@ class LruCache {
     const TKey& getKey() const final { return key; }
   };
 
-  struct HashForEntry : public std::unary_function<KeyedEntry*, hash_t> {
+  struct HashForEntry {
     size_t operator()(const KeyedEntry* entry) const {
       return hash_type(entry->getKey());
     };
   };
 
-  struct EqualityForHashedEntries
-      : public std::unary_function<KeyedEntry*, hash_t> {
+  struct EqualityForHashedEntries {
     bool operator()(const KeyedEntry* lhs, const KeyedEntry* rhs) const {
       return lhs->getKey() == rhs->getKey();
     };