1

Assets/BITKit/Core/Mathematics/MathE.cs

@@ -7,6 +7,21 @@ namespace BITKit
 {
     public static class MathE
     {
+        public static int GetHash<T>(IEnumerable<T> self)
+        {
+            var hash = 0;
+            foreach (var x in self)
+            {
+                if (x is not null)
+                    hash += x.GetHashCode();
+            }
+
+            return hash;
+        }
+        public static bool IndexInRange<T>(this IEnumerable<T> self, int index)
+        {
+            return index >= 0 && index < self.Count();
+        }
         public static bool Equals<T>(params T[] objs)
         {
             var a = objs.FirstOrDefault();
@@ -60,7 +75,8 @@ namespace BITKit
         {
             foreach (var x in b)
             {
-                if (a.Contains(x))
+                var enumerable = a as T[] ?? a.ToArray();
+                if (enumerable.Contains(x))
                 {
 
                 }