From a53d8973e6c54ac81d251373dc71b0616e258a6f Mon Sep 17 00:00:00 2001
From: Atif Aziz <code@raboof.com>
Date: Thu, 12 Jan 2023 21:50:19 +0100
Subject: [PATCH] Replace "!" with debug assertion in "Permutations"

This adds to commit b31c7fdd6b02a77f37e57c0684e6bdcb8b51e5ba,
"Replace null-forgiving operator uses with debug assertions (#890)".
---
 MoreLinq/Permutations.cs | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/MoreLinq/Permutations.cs b/MoreLinq/Permutations.cs
index b700e46fc..fd9698468 100644
--- a/MoreLinq/Permutations.cs
+++ b/MoreLinq/Permutations.cs
@@ -103,7 +103,14 @@ public void Reset()
                 _hasMoreResults = true; // there's always at least one permutation: the original set itself
             }
 
-            public IList<T> Current => _current!;
+            public IList<T> Current
+            {
+                get
+                {
+                    Debug.Assert(_current is not null);
+                    return _current;
+                }
+            }
 
             object IEnumerator.Current => Current;