From 57054f7451b402fbb273b3ad410d02e41124d7a0 Mon Sep 17 00:00:00 2001
From: Christian Mazakas <christian.mazakas@gmail.com>
Date: Tue, 21 Dec 2021 09:26:48 -0800
Subject: [PATCH] Implement heterogeneous `erase()` for multimap

---
 include/boost/unordered/unordered_map.hpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/include/boost/unordered/unordered_map.hpp b/include/boost/unordered/unordered_map.hpp
index 2271ef7a..00830621 100644
--- a/include/boost/unordered/unordered_map.hpp
+++ b/include/boost/unordered/unordered_map.hpp
@@ -1399,6 +1399,16 @@ namespace boost {
       size_type erase(const key_type&);
       iterator erase(const_iterator, const_iterator);
 
+      template <class Key>
+      typename boost::enable_if_c<
+        detail::transparent_non_iterable<Key, unordered_multimap>::value,
+        size_type>::type
+      erase(BOOST_FWD_REF(Key) k)
+      {
+        return table_.erase_key_equiv_impl(
+          this->key_eq(), boost::forward<Key>(k));
+      }
+
       BOOST_UNORDERED_DEPRECATED("Use erase instead")
       void quick_erase(const_iterator it) { erase(it); }
       BOOST_UNORDERED_DEPRECATED("Use erase instead")