Update

Assets/Third Parties/D.A. Assets/DA-Shared/Runtime/Extensions/OtherExtensions.cs

@@ -0,0 +1,64 @@
+using System;
+using System.Linq;
+using UnityEngine;
+
+namespace DA_Assets.Extensions
+{
+    public static class OtherExtensions
+    {
+        public static bool IsDefault<T>(this T obj)
+        {
+            if (obj == null)
+            {
+                return true;
+            }
+
+            return obj.Equals(default(T));
+        }
+
+        public static bool IsFlagSet<T>(this T value, T flag) where T : struct
+        {
+            long lValue = Convert.ToInt64(value);
+            long lFlag = Convert.ToInt64(flag);
+            return (lValue & lFlag) != 0;
+        }
+
+        public static T CopyClass<T>(this T source)
+        {
+            string json = JsonUtility.ToJson(source);
+            T copiedObject = JsonUtility.FromJson<T>(json);
+            return copiedObject;
+        }
+
+        /// <summary>
+        /// <para><see href="https://stackoverflow.com/a/33784596/8265642"/></para>
+        /// </summary>
+        public static string GetNumbers(this string text)
+        {
+            if (string.IsNullOrWhiteSpace(text))
+                return string.Empty;
+
+            return new string(text.Where(p => char.IsDigit(p)).ToArray());
+        }
+
+        public static bool ToBoolNullTrue(this bool? value)
+        {
+            if (value == null)
+            {
+                return true;
+            }
+
+            return value.Value;
+        }
+
+        public static bool ToBoolNullFalse(this bool? value)
+        {
+            if (value == null)
+            {
+                return false;
+            }
+
+            return value.Value;
+        }
+    }
+}