From cffe850bd77a15a292cb15cb618c3c05f04b44d1 Mon Sep 17 00:00:00 2001
From: Chris Cameron <chris.cameron@wedoresi.com>
Date: Fri, 9 Mar 2018 13:48:54 -0500
Subject: [PATCH 1/3] Enum optimizations

---
 ICD.Common.Utils/EnumUtils.cs                 | 14 ++++++++++----
 ICD.Common.Utils/Extensions/EnumExtensions.cs |  4 ++--
 2 files changed, 12 insertions(+), 6 deletions(-)

diff --git a/ICD.Common.Utils/EnumUtils.cs b/ICD.Common.Utils/EnumUtils.cs
index 528cd03..38241fe 100644
--- a/ICD.Common.Utils/EnumUtils.cs
+++ b/ICD.Common.Utils/EnumUtils.cs
@@ -2,7 +2,6 @@
 using System.Collections.Generic;
 using System.Linq;
 using ICD.Common.Properties;
-using ICD.Common.Utils.Collections;
 using ICD.Common.Utils.Extensions;
 #if SIMPLSHARP
 using System.Globalization;
@@ -15,8 +14,15 @@ namespace ICD.Common.Utils
 {
 	public static class EnumUtils
 	{
-		private static readonly Dictionary<Type, IcdHashSet<object>> s_EnumValuesCache =
-			new Dictionary<Type, IcdHashSet<object>>();
+		private static readonly Dictionary<Type, object[]> s_EnumValuesCache;
+
+		/// <summary>
+		/// Static constructor.
+		/// </summary>
+		static EnumUtils()
+		{
+			s_EnumValuesCache = new Dictionary<Type, object[]>();
+		}
 
 		/// <summary>
 		/// Returns true if the given type is an enum.
@@ -119,7 +125,7 @@ namespace ICD.Common.Utils
 
 			// Reflection is slow and this method is called a lot, so we cache the results.
 			if (!s_EnumValuesCache.ContainsKey(type))
-				s_EnumValuesCache[type] = GetValuesUncached(type).ToIcdHashSet();
+				s_EnumValuesCache[type] = GetValuesUncached(type).ToArray();
 
 			return s_EnumValuesCache[type];
 		}
diff --git a/ICD.Common.Utils/Extensions/EnumExtensions.cs b/ICD.Common.Utils/Extensions/EnumExtensions.cs
index f6de53f..aa44ed3 100644
--- a/ICD.Common.Utils/Extensions/EnumExtensions.cs
+++ b/ICD.Common.Utils/Extensions/EnumExtensions.cs
@@ -49,8 +49,8 @@ namespace ICD.Common.Utils.Extensions
 				throw new ArgumentException(message);
 			}
 
-			ulong num = Convert.ToUInt64(value);
-			return (Convert.ToUInt64(extends) & num) == num;
+			int num = (int)(object)value;
+			return ((int)(object)extends & num) == num;
 		}
 	}
 }

From 02ecff187d64aa381695d7a9083695419f519a63 Mon Sep 17 00:00:00 2001
From: Chris Cameron <chris.cameron@wedoresi.com>
Date: Fri, 9 Mar 2018 13:49:13 -0500
Subject: [PATCH 2/3] Method for profiling each step in an enumerable

---
 ICD.Common.Utils/Timers/IcdStopwatch.cs | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/ICD.Common.Utils/Timers/IcdStopwatch.cs b/ICD.Common.Utils/Timers/IcdStopwatch.cs
index d6d1810..1f9f398 100644
--- a/ICD.Common.Utils/Timers/IcdStopwatch.cs
+++ b/ICD.Common.Utils/Timers/IcdStopwatch.cs
@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using ICD.Common.Properties;
 #if SIMPLSHARP
 using Crestron.SimplSharp;
@@ -128,6 +129,22 @@ namespace ICD.Common.Utils.Timers
 			return output;
 		}
 
+		/// <summary>
+		/// Profiles getting each item from the enumerable.
+		/// </summary>
+		/// <typeparam name="T"></typeparam>
+		/// <param name="enumerable"></param>
+		/// <param name="name"></param>
+		/// <returns></returns>
+		public static IEnumerable<T> Profile<T>(IEnumerable<T> enumerable, string name)
+		{
+			using (IEnumerator<T> enumerator = enumerable.GetEnumerator())
+			{
+				while (Profile(() => enumerator.MoveNext(), name))
+					yield return enumerator.Current;
+			}
+		}
+
 		private static void PrintProfile(IcdStopwatch stopwatch, string name)
 		{
 			long elapsed = stopwatch.ElapsedMilliseconds;

From 825fb55bd8029bd2e19e61b3d562fa518c8ea1ee Mon Sep 17 00:00:00 2001
From: Chris Cameron <chris.cameron@wedoresi.com>
Date: Fri, 9 Mar 2018 14:14:37 -0500
Subject: [PATCH 3/3] Tidying

---
 ICD.Common.Utils/EnumUtils.cs | 12 +-----------
 1 file changed, 1 insertion(+), 11 deletions(-)

diff --git a/ICD.Common.Utils/EnumUtils.cs b/ICD.Common.Utils/EnumUtils.cs
index 38241fe..e27261d 100644
--- a/ICD.Common.Utils/EnumUtils.cs
+++ b/ICD.Common.Utils/EnumUtils.cs
@@ -533,17 +533,7 @@ namespace ICD.Common.Utils
 // ReSharper disable once CompareNonConstrainedGenericWithNull
 				throw new ArgumentException(string.Format("{0} is not an enum", value == null ? "NULL" : value.GetType().Name), "value");
 
-			return ToEnum((object)value);
-		}
-
-		/// <summary>
-		/// Converts the given enum value to an Enum.
-		/// </summary>
-		/// <param name="value"></param>
-		/// <returns></returns>
-		public static Enum ToEnum(object value)
-		{
-			return (Enum)value;
+			return (Enum)(object)value;
 		}
 
 		#endregion