From d6bedf20d43c1ec2ecd9ab6210d74a56f880949f Mon Sep 17 00:00:00 2001
From: Christian Luksch <luksch@vrvis.at>
Date: Mon, 30 Sep 2024 17:18:46 +0200
Subject: [PATCH] added IsEmptyOrNull overloads to avoid type checks for faster
 implementation

---
 .../Extensions/IEnumerableExtensions.cs       | 20 +++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/src/Aardvark.Base/Extensions/IEnumerableExtensions.cs b/src/Aardvark.Base/Extensions/IEnumerableExtensions.cs
index e8439ceb..a33ffec5 100644
--- a/src/Aardvark.Base/Extensions/IEnumerableExtensions.cs
+++ b/src/Aardvark.Base/Extensions/IEnumerableExtensions.cs
@@ -875,6 +875,26 @@ public static bool AllEqual<T>(this IEnumerable<T> elements)
 
         #region Comparisons
 
+        /// <summary>
+        /// Returns true if elements contains no items or if elements is null,
+        /// false otherwise.
+        /// </summary>
+        public static bool IsEmptyOrNull<T>(this T[] elements)
+        {
+            if (elements == null) return true;
+            return elements.Length == 0;
+        }
+
+        /// <summary>
+        /// Returns true if elements contains no items or if elements is null,
+        /// false otherwise.
+        /// </summary>
+        public static bool IsEmptyOrNull<T>(this ICollection<T> elements)
+        {
+            if (elements == null) return true;
+            return elements.Count == 0;
+        }
+
         /// <summary>
         /// Returns true if elements contains no items or if elements is null,
         /// false otherwise.