From 2b016fb06a63c658f4dde0e1357188f971559a0b Mon Sep 17 00:00:00 2001
From: Andrei Sergeev <a.sergeev.official@gmail.com>
Date: Sun, 5 Jan 2025 18:33:50 +0400
Subject: [PATCH] Improve/simplify Optional EqualityComparer GetHashCode impl

---
 .../Optional.T.EqualityComparer.Equality.cs   | 25 +++++++------------
 1 file changed, 9 insertions(+), 16 deletions(-)

diff --git a/src/core-taggeds-optional/Optional/Optional.T.EqualityComparer/Optional.T.EqualityComparer.Equality.cs b/src/core-taggeds-optional/Optional/Optional.T.EqualityComparer/Optional.T.EqualityComparer.Equality.cs
index 09131dcc..bc66e30a 100644
--- a/src/core-taggeds-optional/Optional/Optional.T.EqualityComparer/Optional.T.EqualityComparer.Equality.cs
+++ b/src/core-taggeds-optional/Optional/Optional.T.EqualityComparer/Optional.T.EqualityComparer.Equality.cs
@@ -1,6 +1,4 @@
-using System.Runtime.CompilerServices;
-
-namespace System;
+namespace System;
 
 partial struct Optional<T>
 {
@@ -22,19 +20,14 @@ public bool Equals(Optional<T> x, Optional<T> y)
         }
 
         public int GetHashCode(Optional<T> obj)
-            =>
-            obj.hasValue ? PresentHashCode(obj.value) : AbsentHashCode();
-
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        private int PresentHashCode(T value)
-            =>
-            value is not null
-            ? HashCode.Combine(true, comparer.GetHashCode(value))
-            : HashCode.Combine(true);
+        {
+            if (obj.hasValue)
+            {
+                return HashCode.Combine(
+                    obj.value is null ? default : comparer.GetHashCode(obj.value));
+            }
 
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        private static int AbsentHashCode()
-            =>
-            HashCode.Combine(false);
+            return default;
+        }
     }
 }