Update

Runtime/Agoxandr.Utils.asmdef

@@ -1,5 +1,6 @@
 {
     "name": "Agoxandr.Utils",
+    "rootNamespace": "Utils",
     "references": [],
     "includePlatforms": [],
     "excludePlatforms": [],

Runtime/ArrayExtensions.cs

@@ -9,8 +9,8 @@ namespace Utils
                 return new T[] { item };
             }
 
-            T[] result = new T[array.Length + 1];
-            for (int i = 0; i < array.Length; i++)
+            var result = new T[array.Length + 1];
+            for (var i = 0; i < array.Length; i++)
             {
                 result[i] = array[i];
             }

Runtime/EventManager.cs

@@ -28,51 +28,30 @@ namespace Utils
             OnLateUpdated?.Invoke();
         }
 
-        public int UpdateLength
+        public static int UpdateLength
         {
             get
             {
                 var list = OnUpdated?.GetInvocationList();
-                if (list != null)
-                {
-                    return list.Length;
-                }
-                else
-                {
-                    return 0;
-                }
+                return list?.Length ?? 0;
             }
         }
 
-        public int FixedUpdateLength
+        public static int FixedUpdateLength
         {
             get
             {
                 var list = OnFixedUpdated?.GetInvocationList();
-                if (list != null)
-                {
-                    return list.Length;
-                }
-                else
-                {
-                    return 0;
-                }
+                return list?.Length ?? 0;
             }
         }
 
-        public int LateUpdateLength
+        public static int LateUpdateLength
         {
             get
             {
                 var list = OnLateUpdated?.GetInvocationList();
-                if (list != null)
-                {
-                    return list.Length;
-                }
-                else
-                {
-                    return 0;
-                }
+                return list?.Length ?? 0;
             }
         }
     }