From: Jeffrey Czyz <jkczyz@gmail.com>
Date: Tue, 12 Dec 2023 20:51:22 +0000 (-0600)
Subject: Add IndexedMap::get_key_value
X-Git-Tag: v0.0.123-beta~10^2~8
X-Git-Url: http://git.bitcoin.ninja/?a=commitdiff_plain;h=b783736356d17704852ea121a325b2978884ad9a;p=rust-lightning

Add IndexedMap::get_key_value

Useful for applying Option::map when needing both the key and value for
when needing a reference to the key with a longer lifetime.
---

diff --git a/lightning/src/util/indexed_map.rs b/lightning/src/util/indexed_map.rs
index 4f694bd2b..97788ffe6 100644
--- a/lightning/src/util/indexed_map.rs
+++ b/lightning/src/util/indexed_map.rs
@@ -56,6 +56,11 @@ impl<K: Clone + Hash + Ord, V> IndexedMap<K, V> {
 		self.map.get_mut(key)
 	}
 
+	/// Fetches the key-value pair corresponding to the supplied key, if one exists.
+	pub fn get_key_value(&self, key: &K) -> Option<(&K, &V)> {
+		self.map.get_key_value(key)
+	}
+
 	#[inline]
 	/// Returns true if an element with the given `key` exists in the map.
 	pub fn contains_key(&self, key: &K) -> bool {