From 239d45fc8c83c6e7f341ad8937ebd88b120495fd Mon Sep 17 00:00:00 2001
From: mlemanczyk <marek@lemanczyk.eu>
Date: Sat, 1 Apr 2023 16:38:53 +0200
Subject: [PATCH] RecyclableArrayList.IndexOf improved to not raise exception
 when the list is empty.

---
 Recyclable.Collections/RecyclableArrayList.cs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Recyclable.Collections/RecyclableArrayList.cs b/Recyclable.Collections/RecyclableArrayList.cs
index 348cfb1..1d4bce4 100644
--- a/Recyclable.Collections/RecyclableArrayList.cs
+++ b/Recyclable.Collections/RecyclableArrayList.cs
@@ -6,6 +6,7 @@ namespace Recyclable.Collections
 {
 	public class RecyclableArrayList<T> : IEnumerable<T>, IList<T>, IDisposable
 	{
+		private const int ItemNotFound = -1;
 		private static readonly ArrayPool<T> _arrayPool = ArrayPool<T>.Create();
 		private static readonly IEqualityComparer<T> _equalityComparer = EqualityComparer<T>.Default;
 
@@ -388,7 +389,7 @@ namespace Recyclable.Collections
 			}
 		}
 
-		public int IndexOf(T itemToFind) => Array.IndexOf(_memoryBlock, itemToFind, 0, _count);
+		public int IndexOf(T itemToFind) => _count > 0 ? Array.IndexOf(_memoryBlock, itemToFind, 0, _count) : ItemNotFound;
 
 		public void Insert(int index, T item)
 		{