1 files changed, 15 insertions, 0 deletions
diff --git a/engine-ecs/src/util.rs b/engine-ecs/src/util.rs
index 8de44e4..a6bd14b 100644
--- a/engine-ecs/src/util.rs
+++ b/engine-ecs/src/util.rs
@@ -1,3 +1,4 @@
+use std::fmt::Display;
 use std::hash::Hash;
 use std::mem::transmute;
 use std::ops::{BitAnd, Deref};
@@ -137,6 +138,20 @@ where
     }
 }
 
+impl<A, B> Display for Either<A, B>
+where
+    A: Display,
+    B: Display,
+{
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result
+    {
+        match self {
+            Self::A(a) => a.fmt(f),
+            Self::B(b) => b.fmt(f),
+        }
+    }
+}
+
 pub trait HashMapExt<Key, Value>
 {
     /// Returns true if the keys are a subset of another [`HashMap`]'s keys, i.e., `other`