Index: DamEngine/trunk/src/Deltares.DamEngine.Data.Tests/Standard/TypeExtensionsTests.cs
===================================================================
diff -u
--- DamEngine/trunk/src/Deltares.DamEngine.Data.Tests/Standard/TypeExtensionsTests.cs	(revision 0)
+++ DamEngine/trunk/src/Deltares.DamEngine.Data.Tests/Standard/TypeExtensionsTests.cs	(revision 2192)
@@ -0,0 +1,48 @@
+// Copyright (C) Stichting Deltares 2019. All rights reserved.
+//
+// This file is part of the Dam Engine.
+//
+// The Dam Engine is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+//
+// All names, logos, and references to "Deltares" are registered trademarks of
+// Stichting Deltares and remain full property of Stichting Deltares at all times.
+// All rights reserved.
+
+using Deltares.DamEngine.Data.General;
+using Deltares.DamEngine.Data.Standard;
+using NUnit.Framework;
+
+namespace Deltares.DamEngine.Data.Tests.Standard
+{
+    /// <summary>Test the TypeExtensions</summary>
+    [TestFixture]
+    public class TypeExtensionsTests
+    {
+        [Test]
+        [TestCase(SegmentFailureMechanismType.Stability, SegmentFailureMechanismType.Stability)]
+        [TestCase(SegmentFailureMechanismType.Stability, SegmentFailureMechanismType.Stability, SegmentFailureMechanismType.All)]
+        public void GivenValueAndSetWhenCheckingIfValueIsInSetThenReturnsTrue(SegmentFailureMechanismType val, params SegmentFailureMechanismType[] values)
+        {
+            Assert.IsTrue(val.In(values));
+        }
+
+        [Test]
+        [TestCase(SegmentFailureMechanismType.Stability, SegmentFailureMechanismType.Piping)]
+        [TestCase(SegmentFailureMechanismType.Stability, SegmentFailureMechanismType.Piping, SegmentFailureMechanismType.All)]
+        public void GivenValueAndSetWhenCheckingIfValueIsNotInSetThenReturnsFalse(SegmentFailureMechanismType val, params SegmentFailureMechanismType[] values)
+        {
+            Assert.IsFalse(val.In(values));
+        }
+    }
+}
Index: DamEngine/trunk/src/Deltares.DamEngine.Data/Standard/TypeExtensions.cs
===================================================================
diff -u -r1974 -r2192
--- DamEngine/trunk/src/Deltares.DamEngine.Data/Standard/TypeExtensions.cs	(.../TypeExtensions.cs)	(revision 1974)
+++ DamEngine/trunk/src/Deltares.DamEngine.Data/Standard/TypeExtensions.cs	(.../TypeExtensions.cs)	(revision 2192)
@@ -20,17 +20,29 @@
 // All rights reserved.
 
 using System;
-using System.Reflection;
+using System.Linq;
 
 namespace Deltares.DamEngine.Data.Standard
 {
     public static class TypeExtensions
     {
+        /// <summary>Check if a type has a default constructor</summary>
+        /// <param name="type"></param>
         public static bool HasDefaultConstructor(this Type type)
         {
             if (type.IsValueType)
                 return true;
-            return type.GetConstructor(Type.EmptyTypes) != (ConstructorInfo)null;
+            return type.GetConstructor(Type.EmptyTypes) != null;
         }
+
+        /// <summary>Check if a value (val)  of a type is part of a defined set (values)</summary>
+        /// <typeparam name="T"></typeparam>
+        /// <param name="val">The value.</param>
+        /// <param name="values">The values.</param>
+        /// <returns></returns>
+        public static bool In<T>(this T val, params T[] values) where T : struct
+        {
+            return values.Contains(val);
+        }
     }
 }