lib: add [T; N] instance for ContentHash

Natural extension of the existing `[T]` instance. Signed-off-by: Austin Seipp <[email protected]> Change-Id: Ib7f6fd829096b2cac8e3d7b9471a92ddb76a621b
jj-vcs · Oct 19, 2024 · 0e4b412 · 0e4b412
1 parent 0ec426d
commit 0e4b412
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/lib/src/content_hash.rs b/lib/src/content_hash.rs
@@ -79,6 +79,15 @@ impl<T: ContentHash> ContentHash for [T] {
     }
 }
 
+impl<T: ContentHash, const N: usize> ContentHash for [T; N] {
+    fn hash(&self, state: &mut impl DigestUpdate) {
+        state.update(&(N as u64).to_le_bytes());
+        for x in self {
+            x.hash(state);
+        }
+    }
+}
+
 impl<T: ContentHash> ContentHash for Vec<T> {
     fn hash(&self, state: &mut impl DigestUpdate) {
         self.as_slice().hash(state);