From 1380fb40f052526ffaed87e16d03addf3c5fca5d Mon Sep 17 00:00:00 2001
From: hasezoey <hasezoey@gmail.com>
Date: Tue, 18 Nov 2025 17:59:15 +0100
Subject: [PATCH] feat(tree_node_idx::NodeIdx): implement "Hash"

---
 src/tree_node_idx.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/tree_node_idx.rs b/src/tree_node_idx.rs
index 132addd..bb9a629 100644
--- a/src/tree_node_idx.rs
+++ b/src/tree_node_idx.rs
@@ -284,6 +284,12 @@ impl<V: TreeVariant> NodeIdx<V> {
     }
 }
 
+impl<V: TreeVariant> core::hash::Hash for NodeIdx<V> {
+    fn hash<H: core::hash::Hasher>(&self, state: &mut H) {
+        self.0.hash(state);
+    }
+}
+
 impl<V: TreeVariant> Clone for NodeIdx<V> {
     fn clone(&self) -> Self {
         Self(self.0.clone())