Impl Deref/DerefMut for Array

est31 · Mar 4, 2023 · 1fae762 · 1fae762
1 parent a5ac7b2
commit 1fae762
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Showing 2 changed files with 16 additions and 1 deletion.
diff --git a/src/array.rs b/src/array.rs
@@ -1,5 +1,5 @@
 use crate::BigArray;
-use core::ops::{Index, IndexMut};
+use core::ops::{Deref, DerefMut, Index, IndexMut};
 use serde::{Deserialize, Deserializer, Serialize, Serializer};
 
 /// An array newtype usable for nested structures
@@ -42,6 +42,20 @@ impl<T: Serialize, const N: usize> Serialize for Array<T, N> {
     }
 }
 
+impl<T, const N: usize> Deref for Array<T, N> {
+    type Target = [T; N];
+
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+impl<T, const N: usize> DerefMut for Array<T, N> {
+    fn deref_mut(&mut self) -> &mut Self::Target {
+        &mut self.0
+    }
+}
+
 impl<T, I, const N: usize> Index<I> for Array<T, N>
 where
     [T]: Index<I>,

diff --git a/tests/nested.rs b/tests/nested.rs
@@ -16,4 +16,5 @@ fn test() {
     let j = serde_json::to_string(&s).unwrap();
     let s_back = serde_json::from_str::<S>(&j).unwrap();
     assert!(&s.arr[..] == &s_back.arr[..]);
+    assert_eq!(s.arr.len(), 65);
 }