From fc3ee2f37051f4be79f5a9baa06d9bb3cf4a265b Mon Sep 17 00:00:00 2001
From: Atif Aziz <code@raboof.com>
Date: Wed, 9 Nov 2022 07:53:33 +0100
Subject: [PATCH] Replace "MayBeNull" with "?" in "IExtremaEnumerable<>"
 members (#872)

This is a squashed merge of PR #872 that adds to #803.
---
 MoreLinq.Test/MaxByTest.cs |  2 ++
 MoreLinq.Test/MinByTest.cs |  2 ++
 MoreLinq/Extensions.g.cs   |  9 +++------
 MoreLinq/MaxBy.cs          | 10 +++-------
 4 files changed, 10 insertions(+), 13 deletions(-)

diff --git a/MoreLinq.Test/MaxByTest.cs b/MoreLinq.Test/MaxByTest.cs
index 737d10e93..6480e932e 100644
--- a/MoreLinq.Test/MaxByTest.cs
+++ b/MoreLinq.Test/MaxByTest.cs
@@ -15,6 +15,8 @@
 // limitations under the License.
 #endregion
 
+#nullable enable
+
 namespace MoreLinq.Test
 {
     using System;
diff --git a/MoreLinq.Test/MinByTest.cs b/MoreLinq.Test/MinByTest.cs
index 934e49dd5..79d2da26e 100644
--- a/MoreLinq.Test/MinByTest.cs
+++ b/MoreLinq.Test/MinByTest.cs
@@ -15,6 +15,8 @@
 // limitations under the License.
 #endregion
 
+#nullable enable
+
 namespace MoreLinq.Test
 {
     using System;
diff --git a/MoreLinq/Extensions.g.cs b/MoreLinq/Extensions.g.cs
index bead709d2..1a77a18e6 100644
--- a/MoreLinq/Extensions.g.cs
+++ b/MoreLinq/Extensions.g.cs
@@ -1907,8 +1907,7 @@ public static partial class FirstOrDefaultExtension
         /// otherwise, the first element in source.
         /// </returns>
 
-        [return: MaybeNull]
-        public static T FirstOrDefault<T>(this IExtremaEnumerable<T> source)
+        public static T? FirstOrDefault<T>(this IExtremaEnumerable<T> source)
             => MoreEnumerable.FirstOrDefault(source);
 
     }
@@ -3114,8 +3113,7 @@ public static partial class LastOrDefaultExtension
         /// otherwise, the last element in source.
         /// </returns>
 
-        [return: MaybeNull]
-        public static T LastOrDefault<T>(this IExtremaEnumerable<T> source)
+        public static T? LastOrDefault<T>(this IExtremaEnumerable<T> source)
             => MoreEnumerable.LastOrDefault(source);
 
     }
@@ -5178,8 +5176,7 @@ public static partial class SingleOrDefaultExtension
         /// <typeparamref name="T"/> if the sequence contains no elements.
         /// </returns>
 
-        [return: MaybeNull]
-        public static T SingleOrDefault<T>(this IExtremaEnumerable<T> source)
+        public static T? SingleOrDefault<T>(this IExtremaEnumerable<T> source)
             => MoreEnumerable.SingleOrDefault(source);
 
     }
diff --git a/MoreLinq/MaxBy.cs b/MoreLinq/MaxBy.cs
index 3752c1645..b9dbb1ac6 100644
--- a/MoreLinq/MaxBy.cs
+++ b/MoreLinq/MaxBy.cs
@@ -20,7 +20,6 @@ namespace MoreLinq
     using System;
     using System.Collections;
     using System.Collections.Generic;
-    using System.Diagnostics.CodeAnalysis;
     using System.Linq;
 
     /// <summary>
@@ -88,8 +87,7 @@ public static T First<T>(this IExtremaEnumerable<T> source)
         /// otherwise, the first element in source.
         /// </returns>
 
-        [return: MaybeNull]
-        public static T FirstOrDefault<T>(this IExtremaEnumerable<T> source)
+        public static T? FirstOrDefault<T>(this IExtremaEnumerable<T> source)
         {
             if (source == null) throw new ArgumentNullException(nameof(source));
             return source.Take(1).AsEnumerable().FirstOrDefault();
@@ -125,8 +123,7 @@ public static T Last<T>(this IExtremaEnumerable<T> source)
         /// otherwise, the last element in source.
         /// </returns>
 
-        [return: MaybeNull]
-        public static T LastOrDefault<T>(this IExtremaEnumerable<T> source)
+        public static T? LastOrDefault<T>(this IExtremaEnumerable<T> source)
         {
             if (source == null) throw new ArgumentNullException(nameof(source));
             return source.TakeLast(1).AsEnumerable().LastOrDefault();
@@ -164,8 +161,7 @@ public static T Single<T>(this IExtremaEnumerable<T> source)
         /// <typeparamref name="T"/> if the sequence contains no elements.
         /// </returns>
 
-        [return: MaybeNull]
-        public static T SingleOrDefault<T>(this IExtremaEnumerable<T> source)
+        public static T? SingleOrDefault<T>(this IExtremaEnumerable<T> source)
         {
             if (source == null) throw new ArgumentNullException(nameof(source));
             return source.Take(2).AsEnumerable().SingleOrDefault();