From 079faeb02ba339c08b68eb2f8ce80d6e3a0c2145 Mon Sep 17 00:00:00 2001
From: Amin Yahyaabadi <aminyahyaabadi74@gmail.com>
Date: Mon, 10 Jul 2023 20:24:05 -0700
Subject: [PATCH] feat: implement Display and AsRef for MappedRef (#261)

---
 src/mapref/one.rs | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/mapref/one.rs b/src/mapref/one.rs
index 835e45c..fd38530 100644
--- a/src/mapref/one.rs
+++ b/src/mapref/one.rs
@@ -241,6 +241,20 @@ impl<'a, K: Eq + Hash, V, T, S: BuildHasher> Deref for MappedRef<'a, K, V, T, S>
     }
 }
 
+impl<'a, K: Eq + Hash, V, T: std::fmt::Display> std::fmt::Display for MappedRef<'a, K, V, T> {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        std::fmt::Display::fmt(self.value(), f)
+    }
+}
+
+impl<'a, K: Eq + Hash, V, T: AsRef<TDeref>, TDeref: ?Sized> AsRef<TDeref>
+    for MappedRef<'a, K, V, T>
+{
+    fn as_ref(&self) -> &TDeref {
+        self.value().as_ref()
+    }
+}
+
 pub struct MappedRefMut<'a, K, V, T, S = RandomState> {
     _guard: RwLockWriteGuard<'a, HashMap<K, V, S>>,
     k: *const K,