From aeb2a5d91e2cb5d9788715ab00dfcf5cc8335104 Mon Sep 17 00:00:00 2001
From: Chris Cameron <chris.cameron@wedoresi.com>
Date: Fri, 20 Jul 2018 16:50:13 -0400
Subject: [PATCH] perf: Micro-optimization

---
 ICD.Common.Utils/RecursionUtils.cs | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/ICD.Common.Utils/RecursionUtils.cs b/ICD.Common.Utils/RecursionUtils.cs
index 694c68a..e30d4bf 100644
--- a/ICD.Common.Utils/RecursionUtils.cs
+++ b/ICD.Common.Utils/RecursionUtils.cs
@@ -84,18 +84,15 @@ namespace ICD.Common.Utils
 		/// <returns></returns>
 		private static IEnumerable<T> GetCliqueIterator<T>(IDictionary<T, IEnumerable<T>> map, IcdHashSet<T> visited, T node)
 		{
-			if (visited.Contains(node))
+			if (!visited.Add(node))
 				yield break;
 
-			if (!map.ContainsKey(node))
+			IEnumerable<T> adjacent;
+			if (!map.TryGetValue(node, out adjacent))
 				yield break;
 
-			visited.Add(node);
-
 			yield return node;
 
-			IEnumerable<T> adjacent = map.GetDefault(node, Enumerable.Empty<T>());
-
 			foreach (T item in adjacent.SelectMany(a => GetClique(map, visited, a)))
 				yield return item;
 		}