Issue / .NET 10 / Extension Members

Directory.Build.props

@@ -1,8 +1,8 @@
 <Project>
 
   <PropertyGroup>
-    <TargetFramework>net9.0</TargetFramework>
-    <LangVersion>13.0</LangVersion>
+    <TargetFramework>net10.0</TargetFramework>
+    <LangVersion>14.0</LangVersion>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>

Directory.Packages.props

@@ -5,36 +5,36 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageVersion Include="Aspire.Hosting.AppHost" Version="9.0.0" />
-    <PackageVersion Include="Microsoft.AspNetCore.Localization" Version="2.3.0" />
-    <PackageVersion Include="Microsoft.Extensions.Http.Resilience" Version="9.1.0" />
-    <PackageVersion Include="Microsoft.Extensions.ServiceDiscovery" Version="9.0.0" />
-    <PackageVersion Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.11.1" />
-    <PackageVersion Include="OpenTelemetry.Extensions.Hosting" Version="1.11.1" />
-    <PackageVersion Include="OpenTelemetry.Instrumentation.AspNetCore" Version="1.11.0" />
-    <PackageVersion Include="OpenTelemetry.Instrumentation.Http" Version="1.11.0" />
-    <PackageVersion Include="OpenTelemetry.Instrumentation.Runtime" Version="1.11.0" />
-    <PackageVersion Include="BenchmarkDotNet" Version="0.14.0" />
-    <PackageVersion Include="coverlet.collector" Version="6.0.4" />
-    <PackageVersion Include="Microsoft.AspNetCore.OpenApi" Version="9.0.1" />
+    <PackageVersion Include="Aspire.Hosting.AppHost" Version="13.1.2" />
+    <PackageVersion Include="Microsoft.Extensions.Http.Resilience" Version="10.3.0" />
+    <PackageVersion Include="Microsoft.Extensions.ServiceDiscovery" Version="10.3.0" />
+    <PackageVersion Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.15.0" />
+    <PackageVersion Include="OpenTelemetry.Extensions.Hosting" Version="1.15.0" />
+    <PackageVersion Include="OpenTelemetry.Instrumentation.AspNetCore" Version="1.15.0" />
+    <PackageVersion Include="OpenTelemetry.Instrumentation.Http" Version="1.15.0" />
+    <PackageVersion Include="OpenTelemetry.Instrumentation.Runtime" Version="1.15.0" />
+    <PackageVersion Include="BenchmarkDotNet" Version="0.15.8" />
+    <PackageVersion Include="coverlet.collector" Version="8.0.0" />
+    <PackageVersion Include="Microsoft.AspNetCore.OpenApi" Version="10.0.3" />
     <PackageVersion Include="Microsoft.CodeAnalysis.Analyzers" Version="3.11.0" />
-    <PackageVersion Include="Microsoft.CodeAnalysis.CSharp" Version="4.12.0" />
-    <PackageVersion Include="Microsoft.Data.Sqlite" Version="9.0.1" />
-    <PackageVersion Include="Microsoft.Extensions.DependencyInjection" Version="9.0.1" />
-    <PackageVersion Include="Microsoft.Extensions.Logging" Version="9.0.1" />
-    <PackageVersion Include="Microsoft.Extensions.Logging.Abstractions" Version="9.0.1" />
-    <PackageVersion Include="Microsoft.Extensions.Logging.Console" Version="9.0.1" />
-    <PackageVersion Include="Microsoft.Extensions.TimeProvider.Testing" Version="9.1.0" />
-    <PackageVersion Include="Microsoft.NET.Build.Containers" Version="8.0.302" />
-    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
+    <PackageVersion Include="Microsoft.CodeAnalysis.CSharp" Version="5.0.0" />
+    <PackageVersion Include="Microsoft.Data.Sqlite" Version="10.0.3" />
+    <PackageVersion Include="Microsoft.OpenApi" Version="3.3.1" />
+    <PackageVersion Include="Microsoft.Extensions.DependencyInjection" Version="10.0.3" />
+    <PackageVersion Include="Microsoft.Extensions.Logging" Version="10.0.3" />
+    <PackageVersion Include="Microsoft.Extensions.Logging.Abstractions" Version="10.0.3" />
+    <PackageVersion Include="Microsoft.Extensions.Logging.Console" Version="10.0.3" />
+    <PackageVersion Include="Microsoft.Extensions.TimeProvider.Testing" Version="10.3.0" />
+    <PackageVersion Include="Microsoft.NET.Build.Containers" Version="10.0.103" />
+    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.3.0" />
     <PackageVersion Include="Moq" Version="4.20.72" />
-    <PackageVersion Include="Newtonsoft.Json" Version="13.0.3" />
-    <PackageVersion Include="NUnit" Version="4.3.2" />
-    <PackageVersion Include="NUnit3TestAdapter" Version="4.6.0" />
-    <PackageVersion Include="NUnit.Analyzers" Version="4.6.0" />
+    <PackageVersion Include="Newtonsoft.Json" Version="13.0.4" />
+    <PackageVersion Include="NUnit" Version="4.5.0" />
+    <PackageVersion Include="NUnit3TestAdapter" Version="6.1.0" />
+    <PackageVersion Include="NUnit.Analyzers" Version="4.11.2" />
     <PackageVersion Include="Shouldly" Version="4.3.0" />
     <PackageVersion Include="StyleCop.Analyzers.Unstable" Version="1.2.0.556" />
-    <PackageVersion Include="Swashbuckle.AspNetCore" Version="7.2.0" />
+    <PackageVersion Include="Swashbuckle.AspNetCore" Version="10.1.4" />
   </ItemGroup>
 
 </Project>

aspire/Aspire.ServiceDefaults/Extensions.cs

@@ -51,9 +51,9 @@ public static IHostApplicationBuilder ConfigureOpenTelemetry(this IHostApplicati
             })
             .WithTracing(tracing =>
             {
+                // Uncomment the following line to enable gRPC instrumentation (requires the OpenTelemetry.Instrumentation.GrpcNetClient package)
+                //.AddGrpcClientInstrumentation()
                 tracing.AddAspNetCoreInstrumentation()
-                    // Uncomment the following line to enable gRPC instrumentation (requires the OpenTelemetry.Instrumentation.GrpcNetClient package)
-                    //.AddGrpcClientInstrumentation()
                     .AddHttpClientInstrumentation();
             });
 
@@ -83,8 +83,8 @@ private static IHostApplicationBuilder AddOpenTelemetryExporters(this IHostAppli
 
     public static IHostApplicationBuilder AddDefaultHealthChecks(this IHostApplicationBuilder builder)
     {
+        // Add a default liveness check to ensure app is responsive
         builder.Services.AddHealthChecks()
-            // Add a default liveness check to ensure app is responsive
             .AddCheck("self", () => HealthCheckResult.Healthy(), ["live"]);
 
         return builder;

csharp/CSharp/CollectionExpressions.cs

@@ -50,4 +50,19 @@ public void SomeOtherMethod(string[] args)
     {
         _logger.LogInformation($"SomeOtherMethod is called with args: {string.Join(',', args)}");
     }
+
+    public void ExtensionMembers()
+    {
+        IEnumerable<int> empty = [];
+        IEnumerable<int> numbers = [1, 2, 3];
+
+        _logger.LogInformation($"Extension property (instance-like): empty.IsEmpty => {empty.IsEmpty}");
+        _logger.LogInformation($"Extension property (instance-like): numbers.IsEmpty => {numbers.IsEmpty}");
+
+        var combined = IEnumerable<int>.Combine(numbers, [4, 5]);
+        _logger.LogInformation($"Type extension method (static-like): IEnumerable<int>.Combine() => {string.Join(',', combined)}");
+
+        var initialized = IEnumerable<int>.Initialized;
+        _logger.LogInformation($"Type extension property (static-like): IEnumerable<int>.Initialized count => {initialized.Count()}");
+    }
 }

csharp/CSharp/ExtensionMembers.cs

@@ -0,0 +1,15 @@
+namespace CSharp;
+
+public static class ExtensionMembers
+{
+    extension<T>(IEnumerable<T> source)
+    {
+        public bool IsEmpty => !source.Any();
+    }
+
+    extension<T>(IEnumerable<T>)
+    {
+        public static IEnumerable<T> Combine(IEnumerable<T> first, IEnumerable<T> second) => first.Concat(second);
+        public static IEnumerable<T> Initialized => [];
+    }
+}