LambdaCaptureContext

Show different uses of delegates and their performance.

Results om my box:

BenchmarkDotNet v0.15.3, Windows 11 (10.0.26100.6584/24H2/2024Update/HudsonValley) Intel Core Ultra 9 185H 3.10GHz, 1 CPU, 22 logical and 16 physical cores .NET SDK 10.0.100-rc.1.25451.107 [Host] : .NET 9.0.9 (9.0.9, 9.0.925.41916), X64 RyuJIT x86-64-v3 ShortRun : .NET 9.0.9 (9.0.9, 9.0.925.41916), X64 RyuJIT x86-64-v3

Job=ShortRun Runtime=.NET 9.0 Toolchain=net9.0
IterationCount=3 LaunchCount=1 WarmupCount=3

DemoDelegateNoParams

Method	Mean	Error	StdDev	Median	Allocated
Normal_Call	0.0621 ns	0.9824 ns	0.0538 ns	0.0904 ns	-
Lambda_Only	0.2722 ns	1.0820 ns	0.0593 ns	0.3042 ns	-
Lambda_Static_Only	0.1412 ns	0.7555 ns	0.0414 ns	0.1243 ns	-
Method_Group	1.7531 ns	2.4253 ns	0.1329 ns	1.8261 ns	-
Lambda_Cached	0.1621 ns	1.2862 ns	0.0705 ns	0.1957 ns	-
Lambda_Static_Cached	0.0774 ns	1.2237 ns	0.0671 ns	0.1154 ns	-
Method_Group_Cached	1.7349 ns	1.8674 ns	0.1024 ns	1.7807 ns	-

DemoDelegateParams

Method	Mean	Error	StdDev	Median	Ratio	RatioSD	Gen0	Allocated	Alloc Ratio
Normal_Call	0.0038 ns	0.0634 ns	0.0035 ns	0.0046 ns	0.000	0.00	-	-	0.00
Lambda_With_IntParam	0.1955 ns	0.1306 ns	0.0072 ns	0.1963 ns	0.016	0.00	-	-	0.00
Lambda_Static_With_IntParam	0.2611 ns	0.8885 ns	0.0487 ns	0.2862 ns	0.021	0.00	-	-	0.00
Lambda_With_CastedObjectParam	4.5767 ns	0.8872 ns	0.0486 ns	4.5623 ns	0.372	0.01	0.0005	24 B	0.27
Lambda_With_CastedObjectParam_Static	4.6458 ns	0.5439 ns	0.0298 ns	4.6463 ns	0.377	0.01	0.0005	24 B	0.27
Lambda_Captured_Local_Var	12.3221 ns	5.6202 ns	0.3081 ns	12.1707 ns	1.000	0.03	0.0017	88 B	1.00
Method_Group_Captured_Local_Function_Var	12.3249 ns	0.6571 ns	0.0360 ns	12.3331 ns	1.001	0.02	0.0017	88 B	1.00
Lambda_Captured_Class_Var	8.4671 ns	2.7042 ns	0.1482 ns	8.4058 ns	0.687	0.02	0.0012	64 B	0.73
Method_Group_Captured_Class_Var	8.7003 ns	5.6162 ns	0.3078 ns	8.5483 ns	0.706	0.03	0.0012	64 B	0.73
Lambda_Captured_Local_Var_Cached	0.7940 ns	0.2401 ns	0.0132 ns	0.7943 ns	0.064	0.00	-	-	0.00
Lambda_Static_Captured_Local_Var_Cached	0.7276 ns	1.6347 ns	0.0896 ns	0.7729 ns	0.059	0.01	-	-	0.00
Method_Group_Captured_Local_Var_Cached	1.7146 ns	0.1324 ns	0.0073 ns	1.7163 ns	0.139	0.00	-	-	0.00

MethodGroupVsLambda

Method	Mean	Error	StdDev	Gen0	Allocated
Lambda_Capture	127.420 ns	45.5358 ns	2.4960 ns	0.0126	664 B
MethodGroup_Capture	121.138 ns	43.2278 ns	2.3695 ns	0.0126	664 B
Lambda	3.848 ns	0.4069 ns	0.0223 ns	-	-
Lambda_Static	3.865 ns	0.3426 ns	0.0188 ns	-	-
MethodGroup	94.299 ns	24.1053 ns	1.3213 ns	0.0123	640 B
MethodGroup_Static	17.323 ns	0.8385 ns	0.0460 ns	-	-