Instead of using reflection to get an Attribute from an enum member, I tried to use C# 9 Source Generators.
The attribute is simply put atop an enum member like so:
public enum Stuff {
[SomeString("🍯")]
Honey,
[SomeString("🦙")]
Llama,
...
}and can be retrieved via extension method:
Stuff.Llama.ToSomeString();The result is - as expected - much more performant.
// * Summary *
BenchmarkDotNet=v0.13.1, OS=Windows 10.0.18363.1679 (1909/November2019Update/19H2)
Intel Core i7-10610U CPU 1.80GHz, 1 CPU, 8 logical and 4 physical cores
.NET SDK=5.0.301
[Host] : .NET 5.0.7 (5.0.721.25508), X64 RyuJIT
DefaultJob : .NET 5.0.7 (5.0.721.25508), X64 RyuJIT
| Method | Mean | Error | StdDev | Gen 0 | Allocated |
|--------------------- |-------------:|-----------:|-----------:|-------:|----------:|
| WithReflection | 1,229.783 ns | 21.2446 ns | 19.8722 ns | 0.0687 | 288 B |
| WithSourceGeneration | 4.343 ns | 0.1492 ns | 0.1887 ns | 0.0057 | 24 B |
// * Hints *
Outliers
ToEmojiBenchmark.WithReflection: Default -> 1 outlier was detected (1.18 us)
// * Legends *
Mean : Arithmetic mean of all measurements
Error : Half of 99.9% confidence interval
StdDev : Standard deviation of all measurements
Gen 0 : GC Generation 0 collects per 1000 operations
Allocated : Allocated memory per single operation (managed only, inclusive, 1KB = 1024B)
1 ns : 1 Nanosecond (0.000000001 sec)
