@@ -16,6 +16,7 @@ limitations under the License.
 
 local System = System
 local Span = System.Span
+local Array = System.Array
 
 System.MemoryExtensions = {
   AsSpan = function (array) 
@@ -25,5 +26,8 @@ System.MemoryExtensions = {
   AsBoundedSpan = function (array, start, length) 
     local SpanT = Span(array.__genericT__)
     return SpanT(array, start, length)
+  end,
+  Contains = function (span, value)
+    return Array.Contains(span._array, value)
   end
 }
@@ -0,0 +1,18 @@
+using Bridge.Test.NUnit;
+using System;
+
+namespace Bridge.ClientTest
+{
+    [Category(Constants.MODULE_ARRAY)]
+    [TestFixture(TestNameFormat = "MemoryExtensions - {0}")]
+    public class MemoryExtensionsTests
+    {
+        [Test]
+        public void ContainsWorks()
+        {
+            var arr = new string[] { "x", "y" };
+            Assert.True(MemoryExtensions.Contains(arr, "x"));
+            Assert.False(MemoryExtensions.Contains(arr, "z"));
+        }
+    }
+}