.net on chrisxfires blog

.net application models

Wed, 10 Jan 2024 00:00:00 -0600

overview

This mindmap shows .NET application models and their relationships.

generic host

Sun, 26 Jun 2022 19:15:58 -0600

generic host

A host is an object that encapsulates an app’s resources and lifetime functionality. This allows for control over the app’s startup and graceful shutdown.

Examples: Dependency Injection, Logging, Configuration, IHostedService implementations

Generic Host is represented by the HostBuilder type.

Namespace: Microsoft.Extensions.Hosting
Documentation: https://docs.microsoft.com/en-us/dotnet/core/extensions/generic-host

process

When a host starts, it calls IHostedService.StartAsync on each implementation of IHostedService registered in the service container’s collection of hosted services. If the implementation is a worker service, it calls BackgroundService.ExecuteAsync.

benchmarking

Sun, 16 Jan 2022 00:00:00 -0600

benchmarking

dotnet add package BenchmarkDotNet

Program.cs

using BenchmarkDotNet.Running;

public static void Main() {
 BenchmarkRunner.Run<SomeBenchmarks>();
}

SomeBenchmarks.cs

using BenchmarkDotNet.Attributes; // [Benchmark]

public class SomeBenchmarks {
 …

 public SomeBenchmarks() {
 …
 [Benchmark(Baseline = true)]
 public string SomeTest() {
 …
 }

 [Benchmark]
 public string SomeOtherTest() {
 …
 }
 }
}

Then:
dotnet run --configuration release

index and range

Sun, 09 Jan 2022 19:17:18 -0700

overview

Index and range operators can be used with any type that countable. A type is countable if it has an int property named Count or Length and a get accessor.

index

System.Index represents an index into a sequence.

Normally, the index is an integer passed to the indexer of an array:

int index = 3;
Person p = people[index]; // The fourth Person in the array.

The Index value type can identify position.

creating

This index counts from the start: