.NET Object Inspector

An efficient .NET object inspector/accesor to avoid reflection usage.

PropertyFetcher, FieldFetcher, MethodCaller and DuckTyping for .NET by Expression Trees or Emitting IL at runtime.

Target Frameworks

netstandard2.0, netstandard2.1, netcoreapp2.0, netcoreapp2.1, net461, net462, net471, net472, net48 and net45.

Dependencies for netstandard2.0:

System.Reflection.Emit (>= 4.7.0)
System.Reflection.Emit.Lightweight (>= 4.7.0)

Usage

Given the following class with private members, the object inspector can help you to Get, Set or Invoke members of the object instance:

namespace OtherAssembly 
{
	public class SomeClass 
	{
		private string _privateField = "This field it's so private...";
		private string PrivateProperty { get; set; } = "You can't read this";
		private void PrivateConsoleWrite(string line) => Console.WriteLine(line);
	}
	public static class ObjectFactory
	{
		public static object New() => new SomeClass();
	}
}

Note You can inspect, public or non public types with public or non public members, also it's compatible with anonymous objects. As you can see in the following code:

By using a Duck Typing mechanism

Duck Typing can be done by using an Interface, Abstract class or a class with virtual members. The library will create a proxy type inheriting/implementing the base type.

namespace MyAssembly
{
	public interface IDuckSomeClass 
	{
		[Duck(Name="_privateField", Kind = DuckKind.Field, Flags = DuckAttribute.AllFlags)]
		string PrivateField { get; set; }

		[Duck(Flags = DuckAttribute.AllFlags)]
		string PrivateProperty { get; set; }

		[Duck(Flags = DuckAttribute.AllFlags)]
		void PrivateConsoleWrite(string line);
	}

	public class Program
	{
		public static void Main()
		{
			var obj = OtherAssembly.ObjectFactory.New();
			HandleObject(obj);
		}
		
		public static void HandleObject(object obj) 
		{
			// We can treat the object as it were implementing the IDuckSomeClass interface
			var duck = obj.DuckAs<IDuckSomeClass>();

			Console.WriteLine(duck.PrivateField);
			Console.WriteLine(duck.PrivateProperty);
			Console.WriteLine();

			duck.PrivateField += " or not!";
			duck.PrivateProperty += ". I think I can!";

			Console.WriteLine(duck.PrivateField);
			Console.WriteLine(duck.PrivateProperty);
			Console.WriteLine();

			duck.PrivateConsoleWrite("Sooo private...");
		}
	}
}

By using a DynamicFetcher

namespace MyAssembly
{
	public class Program
	{
		public static void Main()
		{
			var obj = OtherAssembly.ObjectFactory.New();
			HandleObject(obj);
		}
		
		private static readonly DynamicFetcher _privateFieldFetcher = new DynamicFetcher("_privateField", DuckAttribute.AllFlags);
		private static readonly DynamicFetcher _privatePropertyFetcher = new DynamicFetcher("PrivateProperty", DuckAttribute.AllFlags);
		private static readonly DynamicFetcher _privateConsoleWriteFetcher = new DynamicFetcher("PrivateConsoleWrite", DuckAttribute.AllFlags);
		
		public static void HandleObject(object obj) 
		{
			// We can handle the object using a dynamic fetcher
			Console.WriteLine((string)_privateFieldFetcher.Fetch(obj));
			Console.WriteLine((string)_privatePropertyFetcher.Fetch(obj));
			Console.WriteLine();

			_privateFieldFetcher.Shove(obj, "This field it's so private... or not!");
			_privatePropertyFetcher.Shove(obj, "You can't read this. I think I can!");

			Console.WriteLine((string)_privateFieldFetcher.Fetch(obj));
			Console.WriteLine((string)_privatePropertyFetcher.Fetch(obj));
			Console.WriteLine();

			_privateConsoleWriteFetcher.Invoke(obj, "Sooo private...");
		}
	}
}

By using an Object Inspector

namespace MyAssembly
{
	public class Program
	{
		public static void Main()
		{
			var obj = OtherAssembly.ObjectFactory.New();
			HandleObject(obj);
		}
		
		public static void HandleObject(object obj) 
		{
			var inspector = new ObjectInspector(new InspectName("_privateField", DuckAttribute.AllFlags), 
			                    new InspectName("PrivateProperty", DuckAttribute.AllFlags), 
			                    new InspectName("PrivateConsoleWrite", DuckAttribute.AllFlags));
			
			var viewer = inspector.With(obj);
			
			Console.WriteLine((string)viewer["_privateField"]);
			Console.WriteLine((string)viewer["PrivateProperty"]);
			Console.WriteLine();

			viewer["_privateField"] = "This field it's so private... or not!";
			viewer["PrivateProperty"] = "You can't read this. I think I can!";

			Console.WriteLine((string)viewer["_privateField"]);
			Console.WriteLine((string)viewer["PrivateProperty"]);
			Console.WriteLine();

			viewer.Invoke("PrivateConsoleWrite", "Sooo private...");
		}
	}
}

By using an Inspector Tuple

namespace MyAssembly
{
	public class Program
	{
		public static void Main()
		{
			var obj = OtherAssembly.ObjectFactory.New();
			HandleObject(obj);
		}
		
		public static void HandleObject(object obj) 
		{
			var inspTuple = new InspectorTuple<string, string, object>(new InspectName("_privateField", DuckAttribute.AllFlags), 
					    new InspectName("PrivateProperty", DuckAttribute.AllFlags), 
					    new InspectName("PrivateConsoleWrite", DuckAttribute.AllFlags));
			
			inspTuple.SetInstance(obj);
			
			Console.WriteLine(inspTuple.Item1);
			Console.WriteLine(inspTuple.Item2);
			Console.WriteLine();

			inspTuple.Item1 = "This field it's so private... or not!";
			inspTuple.Item2 = "You can't read this. I think I can!";

			Console.WriteLine(inspTuple.Item1);
			Console.WriteLine(inspTuple.Item2);
			Console.WriteLine();

			inspTuple.InvokeItem3("Sooo private...");
		}
	}
}

Benchmarks

BenchmarkDotNet=v0.12.1, OS=ubuntu 19.10
AMD Ryzen Threadripper 2950X, 1 CPU, 32 logical and 16 physical cores
.NET Core SDK=3.1.101
  [Host]     : .NET Core 3.1.1 (CoreCLR 4.700.19.60701, CoreFX 4.700.19.60801), X64 RyuJIT
  DefaultJob : .NET Core 3.1.1 (CoreCLR 4.700.19.60701, CoreFX 4.700.19.60801), X64 RyuJIT

Public Class

Public Property / Getter / Object Type

Method	Mean	Error	StdDev	Min	Max	Ratio	RatioSD	Gen 0	Gen 1	Gen 2	Allocated
Direct	0.0057 ns	0.0032 ns	0.0030 ns	0.0000 ns	0.0088 ns	0.004	0.00	-	-	-	-
DuckTypeInterface	2.1733 ns	0.0088 ns	0.0082 ns	2.1614 ns	2.1859 ns	1.498	0.01	-	-	-	-
DuckTypeAbstract	1.4507 ns	0.0058 ns	0.0055 ns	1.4409 ns	1.4586 ns	1.000	0.00	-	-	-	-
DuckTypeVirtual	1.4454 ns	0.0027 ns	0.0026 ns	1.4419 ns	1.4499 ns	0.996	0.00	-	-	-	-
ExpressionTreeFetcher	4.3870 ns	0.0163 ns	0.0136 ns	4.3561 ns	4.4048 ns	3.024	0.01	-	-	-	-
EmitFetcher	4.4331 ns	0.0154 ns	0.0144 ns	4.4125 ns	4.4654 ns	3.056	0.01	-	-	-	-
DelegateFetcher	6.4340 ns	0.0188 ns	0.0176 ns	6.3985 ns	6.4617 ns	4.435	0.02	-	-	-	-
Reflection	107.0668 ns	0.2081 ns	0.1845 ns	106.6127 ns	107.2895 ns	73.802	0.32	-	-	-	-

Public Property / Getter / Value Type

Method	Mean	Error	StdDev	Median	Min	Max	Ratio	RatioSD	Gen 0	Gen 1	Gen 2	Allocated
Direct	0.0000 ns	0.0000 ns	0.0000 ns	0.0000 ns	0.0000 ns	0.0000 ns	0.000	0.00	-	-	-	-
DuckTypeInterface	1.6644 ns	0.0080 ns	0.0075 ns	1.6657 ns	1.6513 ns	1.6773 ns	1.193	0.01	-	-	-	-
DuckTypeAbstract	1.3947 ns	0.0074 ns	0.0069 ns	1.3967 ns	1.3803 ns	1.4034 ns	1.000	0.00	-	-	-	-
DuckTypeVirtual	1.4578 ns	0.0124 ns	0.0116 ns	1.4568 ns	1.4429 ns	1.4750 ns	1.045	0.01	-	-	-	-
ExpressionTreeFetcher	12.2679 ns	0.2723 ns	0.5438 ns	12.5072 ns	10.9949 ns	12.9669 ns	8.489	0.45	0.0014	-	-	24 B
EmitFetcher	12.0793 ns	0.2696 ns	0.2648 ns	12.1251 ns	11.6069 ns	12.6324 ns	8.654	0.21	0.0014	-	-	24 B
DelegateFetcher	15.7135 ns	0.1862 ns	0.1742 ns	15.8033 ns	15.3563 ns	15.8849 ns	11.267	0.16	0.0014	-	-	24 B
Reflection	165.7264 ns	0.7783 ns	0.7280 ns	165.4518 ns	164.8954 ns	167.2588 ns	118.828	0.89	0.0014	-	-	24 B

Public Property / Setter / Object Type

Method	Mean	Error	StdDev	Min	Max	Ratio	RatioSD	Gen 0	Gen 1	Gen 2	Allocated
Direct	1.433 ns	0.0095 ns	0.0079 ns	1.421 ns	1.446 ns	0.60	0.00	-	-	-	-
DuckTypeInterface	2.870 ns	0.0080 ns	0.0071 ns	2.856 ns	2.885 ns	1.21	0.00	-	-	-	-
DuckTypeAbstract	2.371 ns	0.0063 ns	0.0049 ns	2.357 ns	2.377 ns	1.00	0.00	-	-	-	-
DuckTypeVirtual	2.366 ns	0.0081 ns	0.0068 ns	2.349 ns	2.376 ns	1.00	0.00	-	-	-	-
ExpressionTreeFetcher	5.161 ns	0.0469 ns	0.0439 ns	5.074 ns	5.232 ns	2.18	0.01	-	-	-	-
EmitFetcher	5.181 ns	0.0524 ns	0.0490 ns	5.073 ns	5.256 ns	2.18	0.03	-	-	-	-
DelegateFetcher	9.957 ns	0.1754 ns	0.1641 ns	9.701 ns	10.243 ns	4.22	0.07	-	-	-	-
Reflection	215.519 ns	0.7459 ns	0.6977 ns	213.798 ns	216.511 ns	90.86	0.29	0.0038	-	-	64 B

Public Property / Setter / Value Type

Method	Mean	Error	StdDev	Median	Min	Max	Ratio	RatioSD	Gen 0	Gen 1	Gen 2	Allocated
Direct	0.0000 ns	0.0000 ns	0.0000 ns	0.0000 ns	0.0000 ns	0.0000 ns	0.000	0.00	-	-	-	-
DuckTypeInterface	4.0533 ns	0.1463 ns	0.4199 ns	4.1939 ns	2.6805 ns	4.9533 ns	1.095	0.07	-	-	-	-
DuckTypeAbstract	3.8792 ns	0.0550 ns	0.0514 ns	3.9012 ns	3.7611 ns	3.9309 ns	1.000	0.00	-	-	-	-
DuckTypeVirtual	3.9063 ns	0.0546 ns	0.0511 ns	3.9051 ns	3.7578 ns	3.9538 ns	1.007	0.01	-	-	-	-
ExpressionTreeFetcher	12.7433 ns	0.2835 ns	0.6572 ns	13.0110 ns	11.1596 ns	13.6258 ns	3.222	0.21	0.0014	-	-	24 B
EmitFetcher	11.2177 ns	0.2420 ns	0.4110 ns	11.2254 ns	10.5157 ns	12.1097 ns	2.898	0.13	0.0014	-	-	24 B
DelegateFetcher	15.0292 ns	0.0974 ns	0.0864 ns	15.0117 ns	14.9219 ns	15.2370 ns	3.877	0.06	0.0014	-	-	24 B
Reflection	226.4618 ns	1.1025 ns	0.9774 ns	226.7582 ns	223.5496 ns	227.3624 ns	58.419	0.91	0.0052	-	-	88 B

Public Field / Getter / Object Type

Method	Mean	Error	StdDev	Min	Max	Ratio	RatioSD	Gen 0	Gen 1	Gen 2	Allocated
Direct	0.0162 ns	0.0024 ns	0.0023 ns	0.0127 ns	0.0196 ns	0.01	0.00	-	-	-	-
DuckTypeInterface	1.6780 ns	0.0035 ns	0.0033 ns	1.6705 ns	1.6825 ns	1.20	0.01	-	-	-	-
DuckTypeAbstract	1.4006 ns	0.0050 ns	0.0046 ns	1.3933 ns	1.4075 ns	1.00	0.00	-	-	-	-
DuckTypeVirtual	1.3839 ns	0.0032 ns	0.0025 ns	1.3799 ns	1.3882 ns	0.99	0.00	-	-	-	-
ExpressionTreeFetcher	4.4193 ns	0.0225 ns	0.0211 ns	4.3882 ns	4.4517 ns	3.16	0.02	-	-	-	-
EmitFetcher	4.4563 ns	0.0221 ns	0.0207 ns	4.4206 ns	4.4880 ns	3.18	0.02	-	-	-	-
DelegateFetcher	NA	NA	NA	NA	NA	?	?	-	-	-	-
Reflection	48.7989 ns	0.1460 ns	0.1294 ns	48.6077 ns	49.0602 ns	34.84	0.12	-	-	-	-

Public Field / Getter / Value Type

Method	Mean	Error	StdDev	Min	Max	Ratio	RatioSD	Gen 0	Gen 1	Gen 2	Allocated
Direct	0.0104 ns	0.0051 ns	0.0048 ns	0.0029 ns	0.0198 ns	0.008	0.00	-	-	-	-
DuckTypeInterface	1.6868 ns	0.0067 ns	0.0063 ns	1.6743 ns	1.6995 ns	1.216	0.01	-	-	-	-
DuckTypeAbstract	1.3874 ns	0.0045 ns	0.0042 ns	1.3799 ns	1.3937 ns	1.000	0.00	-	-	-	-
DuckTypeVirtual	1.3971 ns	0.0042 ns	0.0038 ns	1.3869 ns	1.4013 ns	1.007	0.00	-	-	-	-
ExpressionTreeFetcher	12.3567 ns	0.2692 ns	0.3773 ns	11.3392 ns	13.0537 ns	8.883	0.33	0.0014	-	-	24 B
EmitFetcher	12.7230 ns	0.2337 ns	0.2186 ns	12.1087 ns	12.9269 ns	9.170	0.15	0.0014	-	-	24 B
DelegateFetcher	NA	NA	NA	NA	NA	?	?	-	-	-	-
Reflection	74.5795 ns	0.6475 ns	0.6057 ns	73.7307 ns	75.4323 ns	53.754	0.41	0.0014	-	-	24 B

Public Field / Setter / Object Type

Method	Mean	Error	StdDev	Min	Max	Ratio	RatioSD	Gen 0	Gen 1	Gen 2	Allocated
Direct	1.195 ns	0.0070 ns	0.0065 ns	1.186 ns	1.205 ns	0.50	0.00	-	-	-	-
DuckTypeInterface	2.638 ns	0.0171 ns	0.0160 ns	2.610 ns	2.662 ns	1.09	0.01	-	-	-	-
DuckTypeAbstract	2.409 ns	0.0069 ns	0.0064 ns	2.392 ns	2.417 ns	1.00	0.00	-	-	-	-
DuckTypeVirtual	2.411 ns	0.0056 ns	0.0053 ns	2.400 ns	2.419 ns	1.00	0.00	-	-	-	-
ExpressionTreeFetcher	4.879 ns	0.0398 ns	0.0372 ns	4.816 ns	4.948 ns	2.03	0.02	-	-	-	-
EmitFetcher	4.798 ns	0.0265 ns	0.0248 ns	4.756 ns	4.840 ns	1.99	0.01	-	-	-	-
DelegateFetcher	NA	NA	NA	NA	NA	?	?	-	-	-	-
Reflection	62.681 ns	0.1221 ns	0.1142 ns	62.487 ns	62.922 ns	26.02	0.08	-	-	-	-

Public Field / Setter / Value Type

Method	Mean	Error	StdDev	Min	Max	Ratio	RatioSD	Gen 0	Gen 1	Gen 2	Allocated
Direct	0.0161 ns	0.0066 ns	0.0058 ns	0.0069 ns	0.0277 ns	0.004	0.00	-	-	-	-
DuckTypeInterface	4.1358 ns	0.1109 ns	0.1442 ns	3.6628 ns	4.2307 ns	1.028	0.04	-	-	-	-
DuckTypeAbstract	3.9717 ns	0.0101 ns	0.0085 ns	3.9483 ns	3.9830 ns	1.000	0.00	-	-	-	-
DuckTypeVirtual	3.9130 ns	0.0182 ns	0.0171 ns	3.8800 ns	3.9475 ns	0.985	0.01	-	-	-	-
ExpressionTreeFetcher	10.2799 ns	0.1900 ns	0.1777 ns	10.1394 ns	10.6424 ns	2.590	0.05	0.0014	-	-	24 B
EmitFetcher	10.2794 ns	0.1665 ns	0.1710 ns	10.0566 ns	10.6314 ns	2.586	0.05	0.0014	-	-	24 B
DelegateFetcher	NA	NA	NA	NA	NA	?	?	-	-	-	-
Reflection	78.7027 ns	0.2133 ns	0.1891 ns	78.3381 ns	78.9225 ns	19.823	0.06	0.0014	-	-	24 B

Public Method / Invoker

Method	Mean	Error	StdDev	Median	Min	Max	Ratio	RatioSD	Gen 0	Gen 1	Gen 2	Allocated
Direct	0.0042 ns	0.0042 ns	0.0039 ns	0.0028 ns	0.0000 ns	0.0118 ns	0.002	0.00	-	-	-	-
DuckTypeInterface	2.4260 ns	0.0095 ns	0.0089 ns	2.4228 ns	2.4145 ns	2.4431 ns	1.415	0.01	-	-	-	-
DuckTypeAbstract	1.7151 ns	0.0077 ns	0.0072 ns	1.7147 ns	1.7045 ns	1.7298 ns	1.000	0.00	-	-	-	-
DuckTypeVirtual	1.7322 ns	0.0082 ns	0.0077 ns	1.7330 ns	1.7175 ns	1.7472 ns	1.010	0.01	-	-	-	-
ExpressionTreeFetcher	48.6474 ns	0.6056 ns	0.5665 ns	48.8195 ns	46.8674 ns	49.2839 ns	28.364	0.35	0.0067	-	-	112 B
EmitFetcher	48.7790 ns	0.1421 ns	0.1186 ns	48.7748 ns	48.5905 ns	49.0109 ns	28.432	0.14	0.0067	-	-	112 B
DelegateFetcher	NA	NA	NA	NA	NA	NA	?	?	-	-	-	-
Reflection	351.2802 ns	0.9316 ns	0.8258 ns	351.4524 ns	349.1993 ns	352.0959 ns	204.823	0.96	0.0091	-	-	152 B

Private Class

Private Property / Getter / Object Type

Method	Mean	Error	StdDev	Min	Max	Ratio	RatioSD	Gen 0	Gen 1	Gen 2	Allocated
Direct	NA	NA	NA	NA	NA	?	?	-	-	-	-
DuckTypeInterface	2.671 ns	0.0046 ns	0.0043 ns	2.666 ns	2.681 ns	1.11	0.00	-	-	-	-
DuckTypeAbstract	2.408 ns	0.0077 ns	0.0072 ns	2.398 ns	2.422 ns	1.00	0.00	-	-	-	-
DuckTypeVirtual	2.154 ns	0.0070 ns	0.0065 ns	2.145 ns	2.166 ns	0.89	0.00	-	-	-	-
ExpressionTreeFetcher	4.444 ns	0.0162 ns	0.0144 ns	4.421 ns	4.469 ns	1.85	0.01	-	-	-	-
EmitFetcher	4.427 ns	0.0241 ns	0.0225 ns	4.398 ns	4.470 ns	1.84	0.01	-	-	-	-
DelegateFetcher	6.422 ns	0.0151 ns	0.0134 ns	6.402 ns	6.439 ns	2.67	0.01	-	-	-	-
Reflection	106.718 ns	0.2564 ns	0.2273 ns	106.414 ns	107.070 ns	44.31	0.16	-	-	-	-

Private Property / Getter / Value Type

Method	Mean	Error	StdDev	Min	Max	Ratio	RatioSD	Gen 0	Gen 1	Gen 2	Allocated
Direct	NA	NA	NA	NA	NA	?	?	-	-	-	-
DuckTypeInterface	2.881 ns	0.0089 ns	0.0083 ns	2.863 ns	2.891 ns	1.19	0.01	-	-	-	-
DuckTypeAbstract	2.413 ns	0.0105 ns	0.0099 ns	2.388 ns	2.426 ns	1.00	0.00	-	-	-	-
DuckTypeVirtual	2.415 ns	0.0088 ns	0.0074 ns	2.397 ns	2.426 ns	1.00	0.01	-	-	-	-
ExpressionTreeFetcher	12.329 ns	0.2724 ns	0.2548 ns	11.700 ns	12.732 ns	5.11	0.12	0.0014	-	-	24 B
EmitFetcher	12.127 ns	0.2682 ns	0.4482 ns	10.431 ns	12.552 ns	4.99	0.19	0.0014	-	-	24 B
DelegateFetcher	14.618 ns	0.2838 ns	0.2655 ns	14.230 ns	14.984 ns	6.06	0.10	0.0014	-	-	24 B
Reflection	170.210 ns	1.0057 ns	0.9407 ns	168.702 ns	171.906 ns	70.55	0.55	0.0014	-	-	24 B

Private Property / Setter / Object Type

Method	Mean	Error	StdDev	Min	Max	Ratio	RatioSD	Gen 0	Gen 1	Gen 2	Allocated
Direct	NA	NA	NA	NA	NA	?	?	-	-	-	-
DuckTypeInterface	3.967 ns	0.0965 ns	0.0903 ns	3.764 ns	4.097 ns	1.09	0.02	-	-	-	-
DuckTypeAbstract	3.639 ns	0.0086 ns	0.0076 ns	3.626 ns	3.652 ns	1.00	0.00	-	-	-	-
DuckTypeVirtual	3.647 ns	0.0076 ns	0.0071 ns	3.638 ns	3.657 ns	1.00	0.00	-	-	-	-
ExpressionTreeFetcher	4.728 ns	0.1222 ns	0.1143 ns	4.503 ns	4.838 ns	1.30	0.03	-	-	-	-
EmitFetcher	4.765 ns	0.1213 ns	0.1075 ns	4.393 ns	4.803 ns	1.31	0.03	-	-	-	-
DelegateFetcher	10.804 ns	0.2419 ns	0.2971 ns	9.875 ns	11.082 ns	2.97	0.09	-	-	-	-
Reflection	190.189 ns	1.3800 ns	1.2908 ns	188.956 ns	193.633 ns	52.23	0.36	0.0038	-	-	64 B

Private Property / Setter / Value Type

Method	Mean	Error	StdDev	Min	Max	Ratio	RatioSD	Gen 0	Gen 1	Gen 2	Allocated
Direct	NA	NA	NA	NA	NA	?	?	-	-	-	-
DuckTypeInterface	3.686 ns	0.0158 ns	0.0148 ns	3.660 ns	3.708 ns	1.02	0.01	-	-	-	-
DuckTypeAbstract	3.612 ns	0.0239 ns	0.0224 ns	3.589 ns	3.652 ns	1.00	0.00	-	-	-	-
DuckTypeVirtual	3.628 ns	0.0100 ns	0.0078 ns	3.614 ns	3.639 ns	1.00	0.01	-	-	-	-
ExpressionTreeFetcher	11.522 ns	0.3087 ns	0.9103 ns	10.283 ns	13.249 ns	3.02	0.20	0.0014	-	-	24 B
EmitFetcher	10.236 ns	0.2166 ns	0.4015 ns	9.821 ns	11.229 ns	2.89	0.10	0.0014	-	-	24 B
DelegateFetcher	14.316 ns	0.1558 ns	0.1457 ns	13.995 ns	14.607 ns	3.96	0.05	0.0014	-	-	24 B
Reflection	207.938 ns	1.0840 ns	1.0139 ns	206.318 ns	210.046 ns	57.57	0.50	0.0052	-	-	88 B

Private Field / Getter / Object Type

Method	Mean	Error	StdDev	Min	Max	Ratio	RatioSD	Gen 0	Gen 1	Gen 2	Allocated
Direct	NA	NA	NA	NA	NA	?	?	-	-	-	-
DuckTypeInterface	3.147 ns	0.0216 ns	0.0191 ns	3.125 ns	3.180 ns	1.30	0.01	-	-	-	-
DuckTypeAbstract	2.420 ns	0.0050 ns	0.0045 ns	2.408 ns	2.425 ns	1.00	0.00	-	-	-	-
DuckTypeVirtual	2.407 ns	0.0151 ns	0.0126 ns	2.387 ns	2.432 ns	0.99	0.01	-	-	-	-
ExpressionTreeFetcher	4.480 ns	0.0549 ns	0.0487 ns	4.415 ns	4.588 ns	1.85	0.02	-	-	-	-
EmitFetcher	4.401 ns	0.0182 ns	0.0162 ns	4.366 ns	4.428 ns	1.82	0.01	-	-	-	-
DelegateFetcher	NA	NA	NA	NA	NA	?	?	-	-	-	-
Reflection	49.517 ns	0.2291 ns	0.2143 ns	49.099 ns	49.789 ns	20.48	0.09	-	-	-	-

Private Field / Getter / Value Type

Method	Mean	Error	StdDev	Min	Max	Ratio	RatioSD	Gen 0	Gen 1	Gen 2	Allocated
Direct	NA	NA	NA	NA	NA	?	?	-	-	-	-
DuckTypeInterface	2.847 ns	0.0154 ns	0.0137 ns	2.814 ns	2.864 ns	1.20	0.01	-	-	-	-
DuckTypeAbstract	2.381 ns	0.0164 ns	0.0137 ns	2.358 ns	2.402 ns	1.00	0.00	-	-	-	-
DuckTypeVirtual	2.396 ns	0.0074 ns	0.0069 ns	2.382 ns	2.408 ns	1.01	0.01	-	-	-	-
ExpressionTreeFetcher	11.441 ns	0.2568 ns	0.6584 ns	10.388 ns	13.203 ns	4.99	0.27	0.0014	-	-	24 B
EmitFetcher	12.052 ns	0.2697 ns	0.4652 ns	10.618 ns	12.944 ns	5.12	0.26	0.0014	-	-	24 B
DelegateFetcher	NA	NA	NA	NA	NA	?	?	-	-	-	-
Reflection	81.354 ns	0.9989 ns	0.8855 ns	79.770 ns	82.538 ns	34.14	0.50	0.0014	-	-	24 B

Private Field / Setter / Object Type

Method	Mean	Error	StdDev	Min	Max	Ratio	RatioSD	Gen 0	Gen 1	Gen 2	Allocated
Direct	NA	NA	NA	NA	NA	?	?	-	-	-	-
DuckTypeInterface	3.605 ns	0.0140 ns	0.0117 ns	3.578 ns	3.619 ns	0.99	0.00	-	-	-	-
DuckTypeAbstract	3.649 ns	0.0149 ns	0.0140 ns	3.625 ns	3.675 ns	1.00	0.00	-	-	-	-
DuckTypeVirtual	3.656 ns	0.0169 ns	0.0158 ns	3.629 ns	3.676 ns	1.00	0.00	-	-	-	-
ExpressionTreeFetcher	4.772 ns	0.0397 ns	0.0371 ns	4.715 ns	4.816 ns	1.31	0.01	-	-	-	-
EmitFetcher	4.822 ns	0.0209 ns	0.0174 ns	4.784 ns	4.858 ns	1.32	0.01	-	-	-	-
DelegateFetcher	NA	NA	NA	NA	NA	?	?	-	-	-	-
Reflection	61.724 ns	0.2886 ns	0.2559 ns	61.262 ns	62.284 ns	16.91	0.10	-	-	-	-

Private Field / Setter / Value Type

Method	Mean	Error	StdDev	Min	Max	Ratio	RatioSD	Gen 0	Gen 1	Gen 2	Allocated
Direct	NA	NA	NA	NA	NA	?	?	-	-	-	-
DuckTypeInterface	3.701 ns	0.0248 ns	0.0207 ns	3.673 ns	3.729 ns	1.02	0.01	-	-	-	-
DuckTypeAbstract	3.633 ns	0.0218 ns	0.0182 ns	3.605 ns	3.663 ns	1.00	0.00	-	-	-	-
DuckTypeVirtual	3.635 ns	0.0262 ns	0.0232 ns	3.587 ns	3.666 ns	1.00	0.01	-	-	-	-
ExpressionTreeFetcher	10.347 ns	0.1572 ns	0.1393 ns	10.118 ns	10.510 ns	2.85	0.04	0.0014	-	-	24 B
EmitFetcher	10.958 ns	0.2460 ns	0.5188 ns	10.207 ns	12.344 ns	3.00	0.15	0.0014	-	-	24 B
DelegateFetcher	NA	NA	NA	NA	NA	?	?	-	-	-	-
Reflection	72.224 ns	0.4226 ns	0.3953 ns	71.470 ns	72.778 ns	19.87	0.19	0.0014	-	-	24 B

Private Method / Invoker

Method	Mean	Error	StdDev	Min	Max	Ratio	RatioSD	Gen 0	Gen 1	Gen 2	Allocated
Direct	NA	NA	NA	NA	NA	?	?	-	-	-	-
DuckTypeInterface	59.46 ns	0.536 ns	0.476 ns	58.59 ns	60.31 ns	1.03	0.01	0.0067	-	-	112 B
DuckTypeAbstract	57.49 ns	0.568 ns	0.531 ns	56.77 ns	58.35 ns	1.00	0.00	0.0067	-	-	112 B
DuckTypeVirtual	56.76 ns	0.176 ns	0.164 ns	56.50 ns	56.99 ns	0.99	0.01	0.0067	-	-	112 B
ExpressionTreeFetcher	48.86 ns	0.301 ns	0.281 ns	48.43 ns	49.32 ns	0.85	0.01	0.0067	-	-	112 B
EmitFetcher	49.22 ns	0.565 ns	0.472 ns	48.42 ns	49.90 ns	0.86	0.01	0.0067	-	-	112 B
DelegateFetcher	NA	NA	NA	NA	NA	?	?	-	-	-	-
Reflection	355.14 ns	2.225 ns	2.082 ns	351.81 ns	358.70 ns	6.18	0.06	0.0091	-	-	152 B

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Thanks to @jetbrains for helping on this development with the licenses for Rider, dotTrace and dotMemory

Name		Name	Last commit message	Last commit date
Latest commit History 70 Commits
.github/workflows		.github/workflows
src/Wanhjor.ObjectInspector		src/Wanhjor.ObjectInspector
test		test
.gitignore		.gitignore
LICENSE		LICENSE
README.md		README.md
Wanhjor.ObjectInspector.sln		Wanhjor.ObjectInspector.sln
icon.png		icon.png
wanhjor.snk		wanhjor.snk

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.NET Object Inspector

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Dependencies for netstandard2.0:

Usage

By using a Duck Typing mechanism

By using a DynamicFetcher

By using an Object Inspector

By using an Inspector Tuple

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.NET Object Inspector

Target Frameworks

Dependencies for netstandard2.0:

Usage

By using a Duck Typing mechanism

By using a DynamicFetcher

By using an Object Inspector

By using an Inspector Tuple

Benchmarks

Public Class

Public Property / Getter / Object Type

Public Property / Getter / Value Type

Public Property / Setter / Object Type

Public Property / Setter / Value Type

Public Field / Getter / Object Type

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