[lucenenet] 02/06: Lucene.Net.Util.ArrayUtil: Reduced memory allocations when using GetNaturalComparer() by creating a singleton instance.

[ni...@apache.org]

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nightowl888 pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/lucenenet.git

commit 6719070fcb008dda88dbb97250fd5144a7d04477
Author: Shad Storhaug <sh...@shadstorhaug.com>
AuthorDate: Thu Jul 16 02:20:24 2020 +0700

    Lucene.Net.Util.ArrayUtil: Reduced memory allocations when using GetNaturalComparer<T>() by creating a singleton instance.
---
 src/Lucene.Net/Util/ArrayUtil.cs | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/Lucene.Net/Util/ArrayUtil.cs b/src/Lucene.Net/Util/ArrayUtil.cs
index b13b0c0..3931aad 100644
--- a/src/Lucene.Net/Util/ArrayUtil.cs
+++ b/src/Lucene.Net/Util/ArrayUtil.cs
@@ -797,10 +797,12 @@ namespace Lucene.Net.Util
 #endif
         private class NaturalComparer<T> : IComparer<T> //where T : IComparable<T>
         {
-            internal NaturalComparer()
+            private NaturalComparer()
             {
             }
 
+            public static NaturalComparer<T> Default { get; } = new NaturalComparer<T>();
+
             public virtual int Compare(T o1, T o2)
             {
                 return ((IComparable<T>)o1).CompareTo(o2);
@@ -841,7 +843,7 @@ namespace Lucene.Net.Util
             // to implement IComparable<T>.
             else if (typeof(IComparable<T>).IsAssignableFrom(genericClosingType))
             {
-                return new NaturalComparer<T>();
+                return NaturalComparer<T>.Default;
             }
 
             return Comparer<T>.Default;