From adc918235e129cd0a417fb5af86fd11f8da44e65 Mon Sep 17 00:00:00 2001
From: Brian McKinnon <bpmckinnon@gmail.com>
Date: Sat, 2 May 2020 17:09:10 -0500
Subject: [PATCH] Add missing const

---
 parallel_hashmap/phmap.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/parallel_hashmap/phmap.h b/parallel_hashmap/phmap.h
index 8ae2ca6..dca52bf 100644
--- a/parallel_hashmap/phmap.h
+++ b/parallel_hashmap/phmap.h
@@ -3409,7 +3409,7 @@ public:
     }
 
     template <class K = key_type, class F>
-    bool if_contains(const key_arg<K>& key, F&& f) {
+    bool if_contains(const key_arg<K>& key, F&& f) const {
         typename Lockable::SharedLock m;
         auto it = const_cast<parallel_hash_map*>(this)->find(key, hash(key), m);
         if (it == this->end())