From c80e59cf8de2a865b67cb3bf8f2d6ccb42643df2 Mon Sep 17 00:00:00 2001
From: "Collin M. Barrett" <collinbarrett@users.noreply.github.com>
Date: Wed, 3 Jul 2019 10:29:41 -0500
Subject: [PATCH] resolve CA1826 warning with custom extension method

---
 .../Extensions/ReadOnlyListExtensions.cs           | 14 ++++++++++++++
 .../Features/Urls/CloseUrlValidationIssue.cs       |  4 ++--
 .../Urls/CreateOrUpdateUrlValidationIssue.cs       |  2 +-
 3 files changed, 17 insertions(+), 3 deletions(-)
 create mode 100644 src/FilterLists.Agent/Extensions/ReadOnlyListExtensions.cs

diff --git a/src/FilterLists.Agent/Extensions/ReadOnlyListExtensions.cs b/src/FilterLists.Agent/Extensions/ReadOnlyListExtensions.cs
new file mode 100644
index 000000000..093fc24fc
--- /dev/null
+++ b/src/FilterLists.Agent/Extensions/ReadOnlyListExtensions.cs
@@ -0,0 +1,14 @@
+using System.Collections.Generic;
+
+namespace FilterLists.Agent.Extensions
+{
+    public static class ReadOnlyListExtensions
+    {
+        public static T FirstOrDefault<T>(this IReadOnlyList<T> list)
+        {
+            if (list is null || list.Count == 0)
+                return default;
+            return list[0];
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/FilterLists.Agent/Features/Urls/CloseUrlValidationIssue.cs b/src/FilterLists.Agent/Features/Urls/CloseUrlValidationIssue.cs
index 7dfb6be7a..b4c088c8b 100644
--- a/src/FilterLists.Agent/Features/Urls/CloseUrlValidationIssue.cs
+++ b/src/FilterLists.Agent/Features/Urls/CloseUrlValidationIssue.cs
@@ -1,6 +1,6 @@
-using System.Linq;
-using System.Threading;
+using System.Threading;
 using System.Threading.Tasks;
+using FilterLists.Agent.Extensions;
 using FilterLists.Agent.Infrastructure.Clients;
 using MediatR;
 using Octokit;
diff --git a/src/FilterLists.Agent/Features/Urls/CreateOrUpdateUrlValidationIssue.cs b/src/FilterLists.Agent/Features/Urls/CreateOrUpdateUrlValidationIssue.cs
index 87edee76c..f9d0fb8db 100644
--- a/src/FilterLists.Agent/Features/Urls/CreateOrUpdateUrlValidationIssue.cs
+++ b/src/FilterLists.Agent/Features/Urls/CreateOrUpdateUrlValidationIssue.cs
@@ -1,7 +1,7 @@
 using System.Collections.Generic;
-using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
+using FilterLists.Agent.Extensions;
 using FilterLists.Agent.Features.Urls.Models.ValidationResults;
 using FilterLists.Agent.Infrastructure.Clients;
 using MediatR;