Add John.EnumToString、John.Api.MinimalApi

John.Api.MinimalApi/John.Api.MinimalApi.csproj

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+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>net7.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <RootNamespace>John.Api_MinimalApi</RootNamespace>
+  </PropertyGroup>
+
+</Project>

John.Api.MinimalApi/Program.cs

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+using Microsoft.AspNetCore.Mvc;
+
+var builder = WebApplication.CreateBuilder(args);
+builder.Services.AddSingleton<CustomerRepository>();
+
+var app = builder.Build();
+
+app.UseHttpsRedirection();
+
+app.MapGet("/customers", ([FromServices] CustomerRepository repo) =>
+{
+    return repo.GetAll();
+});
+
+app.MapGet("/customers/{id}", ([FromServices] CustomerRepository repo, Guid id) =>
+{
+    var customer = repo.GetById(id);
+
+    return customer is not null ? Results.Ok(customer) : Results.NotFound();
+});
+
+app.MapPost("/customers", ([FromServices] CustomerRepository repo, Customer customer) =>
+{
+    repo.Create(customer);
+
+    return Results.Created($"/customers/{customer.Id}", customer);
+});
+
+app.MapPost("/customers/{id}", ([FromServices] CustomerRepository repo, Guid id, Customer updatedCustomer) =>
+{
+    var customer = repo.GetById(id);
+
+    if (customer is null)
+    {
+        return Results.NotFound();
+    }
+
+    repo.Update(updatedCustomer);
+
+    return Results.Ok(updatedCustomer);
+});
+
+app.MapPost("/customers/{id}", ([FromServices] CustomerRepository repo, Guid id) =>
+{
+    repo.Delete(id);
+
+    return Results.Ok();
+});
+
+app.Run();
+
+record Customer(Guid Id, string FullName);
+
+class CustomerRepository
+{
+    private readonly Dictionary<Guid, Customer> _customers = new();
+
+    public void Create(Customer customer)
+    {
+        if (customer == null)
+        {
+            return;
+        }
+
+        _customers[customer.Id] = customer;
+    }
+
+    public Customer GetById(Guid Id)
+    {
+        return _customers[Id];
+    }
+
+    public List<Customer?> GetAll()
+    {
+        return _customers.Values.ToList();
+    }
+
+    public void Update(Customer customer)
+    {
+        var existingCustomer = GetById(customer.Id);
+
+        if (existingCustomer != null)
+        {
+            return;
+        }
+
+        _customers[customer.Id] = customer;
+    }
+
+    public void Delete(Guid Id)
+    {
+        _customers.Remove(Id);
+    }
+}

John.Api.MinimalApi/Properties/launchSettings.json

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+{
+  "$schema": "https://json.schemastore.org/launchsettings.json",
+  "iisSettings": {
+    "windowsAuthentication": false,
+    "anonymousAuthentication": true,
+    "iisExpress": {
+      "applicationUrl": "http://localhost:39142",
+      "sslPort": 44364
+    }
+  },
+  "profiles": {
+    "http": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": true,
+      "launchUrl": "weatherforecast",
+      "applicationUrl": "http://localhost:5000",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "https": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": true,
+      "launchUrl": "weatherforecast",
+      "applicationUrl": "https://localhost:7118;http://localhost:5000",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "IIS Express": {
+      "commandName": "IISExpress",
+      "launchBrowser": true,
+      "launchUrl": "weatherforecast",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    }
+  }
+}

John.Api.MinimalApi/appsettings.Development.json

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+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  }
+}

John.Api.MinimalApi/appsettings.json

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+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  },
+  "AllowedHosts": "*"
+}

John.EnumToString/John.EnumToString.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="BenchmarkDotNet" Version="0.13.5" />
+  </ItemGroup>
+
+</Project>

John.EnumToString/Program.cs

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+
+
+using BenchmarkDotNet.Attributes;
+using BenchmarkDotNet.Running;
+using System.Diagnostics;
+using System.Security.Cryptography.X509Certificates;
+
+BenchmarkRunner.Run<Benchy>();
+
+[MemoryDiagnoser(false)]
+public class Benchy
+{
+    [Benchmark]
+    public string NativeToString()
+    {
+        return HumanStates.Dead.ToString(); ;
+    }
+
+    [Benchmark]
+    public string FastToString()
+    {
+        return FastToString(HumanStates.Dead);
+    }
+
+    private static string FastToString(HumanStates states)
+    {
+        switch (states)
+        {
+            case HumanStates.Idle:
+                return nameof(HumanStates.Idle);
+            case HumanStates.Working:
+                return nameof(HumanStates.Working);
+            case HumanStates.Sleeping:
+                return nameof(HumanStates.Sleeping);
+            case HumanStates.Eating:
+                return nameof(HumanStates.Eating);
+            case HumanStates.Dead:
+                return nameof(HumanStates.Dead);
+            default:
+                throw new ArgumentOutOfRangeException(nameof(states), states, null);
+        }
+    }
+}
+
+enum HumanStates
+{
+    Idle,
+    Working,
+    Sleeping,
+    Eating,
+    Dead
+}