Use unmanaged and Enum constraints.

Author: KN4CK3R

ReClass.NET/Memory/MemoryBuffer.cs

@@ -157,14 +157,14 @@ public void ReadBytes(int offset, byte[] buffer)
 			Array.Copy(data, offset, buffer, 0, buffer.Length);
 		}
 
-		public T ReadObject<T>(IntPtr offset) where T : struct
+		public T ReadObject<T>(IntPtr offset) where T : unmanaged
 		{
 			Contract.Requires(offset.ToInt32() >= 0);
 
 			return ReadObject<T>(offset.ToInt32());
 		}
 
-		public T ReadObject<T>(int offset) where T : struct
+		public T ReadObject<T>(int offset) where T : unmanaged
 		{
 			Contract.Requires(offset >= 0);
 

ReClass.NET/Memory/RemoteProcess.cs

@@ -206,7 +206,7 @@ public byte[] ReadRemoteMemory(IntPtr address, int size)
 		/// <typeparam name="T">Type of the value to read.</typeparam>
 		/// <param name="address">The address to read from.</param>
 		/// <returns>The remote object.</returns>
-		public T ReadRemoteObject<T>(IntPtr address) where T : struct
+		public T ReadRemoteObject<T>(IntPtr address) where T : unmanaged
 		{
 			var data = ReadRemoteMemory(address, Marshal.SizeOf<T>());
 
@@ -569,7 +569,7 @@ public bool WriteRemoteMemory(IntPtr address, byte[] data)
 		/// <param name="address">The address to write to.</param>
 		/// <param name="value">The value to write.</param>
 		/// <returns>True if it succeeds, false if it fails.</returns>
-		public bool WriteRemoteMemory<T>(IntPtr address, T value) where T : struct
+		public bool WriteRemoteMemory<T>(IntPtr address, T value) where T : unmanaged
 		{
 			var data = new byte[Marshal.SizeOf<T>()];
 

ReClass.NET/ReClass.NET.csproj

@@ -70,6 +70,7 @@
     <CodeContractsRuntimeCheckingLevel>Full</CodeContractsRuntimeCheckingLevel>
     <CodeContractsReferenceAssembly>%28none%29</CodeContractsReferenceAssembly>
     <CodeContractsAnalysisWarningLevel>3</CodeContractsAnalysisWarningLevel>
+    <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|x86' ">
     <PlatformTarget>x86</PlatformTarget>

ReClass.NET/UI/EnumComboBox.cs

@@ -1,14 +1,14 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 using System.ComponentModel;
 using System.Diagnostics.Contracts;
 using System.Linq;
 using System.Windows.Forms;
 using ReClassNET.Extensions;
-using ReClassNET.Util;
 
 namespace ReClassNET.UI
 {
-	public class EnumComboBox<TEnum> : ComboBox where TEnum : struct
+	public class EnumComboBox<TEnum> : ComboBox where TEnum : Enum
 	{
 		#region Properties
 
@@ -52,7 +52,7 @@ public class EnumComboBox<TEnum> : ComboBox where TEnum : struct
 		[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
 		public new TEnum SelectedValue
 		{
-			get => ((EnumDescriptionDisplay<TEnum>)base.SelectedItem)?.Value ?? default(TEnum);
+			get => ((EnumDescriptionDisplay<TEnum>)base.SelectedItem).Value;
 			set => base.SelectedItem = base.Items.Cast<EnumDescriptionDisplay<TEnum>>().PredicateOrFirst(e => e.Value.Equals(value));
 		}
 

ReClass.NET/UI/EnumDescriptionDisplay.cs

@@ -5,11 +5,10 @@
 using System.Linq;
 using System.Reflection;
 using ReClassNET.Extensions;
-using ReClassNET.Util;
 
 namespace ReClassNET.UI
 {
-	public class EnumDescriptionDisplay<TEnum> where TEnum : struct
+	public class EnumDescriptionDisplay<TEnum> where TEnum : Enum
 	{
 		public TEnum Value { get; internal set; }
 		public string Description { get; internal set; }