From 0bed055a7448759bb1ff5c9a72a0ad14810fd2e9 Mon Sep 17 00:00:00 2001
From: Robert Dailey <rcdailey@gmail.com>
Date: Mon, 4 Jul 2022 22:32:21 -0500
Subject: [PATCH] refactor: NotNull extension method for IEnumerable

---
 src/Common/Extensions/CollectionExtensions.cs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/Common/Extensions/CollectionExtensions.cs b/src/Common/Extensions/CollectionExtensions.cs
index a8ddb7de..b45a14c9 100644
--- a/src/Common/Extensions/CollectionExtensions.cs
+++ b/src/Common/Extensions/CollectionExtensions.cs
@@ -32,4 +32,10 @@ public static class CollectionExtensions
             destination.Add(item);
         }
     }
+
+    public static IEnumerable<T> NotNull<T>(this IEnumerable<T?> observable)
+        where T : class
+    {
+        return observable.Where(x => x is not null).Select(x => x!);
+    }
 }