alexsandro-xpt

.NET 5.0 Examples

The following are examples of various features.

• Modernizing a codebase for C# 9
• Top-level programs
• Various patterns of patterns
• Should rich go to the doctor
• Various patterns of records
• Records vs Classes (with init)

alexsandro-xpt

#!/usr/bin/env dotnet run

var builder = WebApplication.CreateBuilder(args);
var config = builder.Configuration;
var connString = config["connectionString"] ?? "Data Source=todos.db";

builder.AddDbContext<TodoDb>(options => options.UseSqlite(connString));
builder.AddSqlite<Todo>(connString) // Higher level API perhaps?

var app = builder.Build();

alexsandro-xpt

using System;
using System.Collections.Generic;
using System.Threading;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.DependencyInjection;

/*

- Don't need to support different services per tenant.
- Tenant services lifetime outlasts the request.

alexsandro-xpt

hostname elliot-01
echo elliot-01 > /etc/hostname
bash
curl -fsSL https://get.docker.com | bash
docker version
docker ps
echo "deb http://apt.kubernetes.io/ kubernetes-xenial main" > /etc/apt/sources.list.d/kubernetes.list
curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add -
apt-get update
apt-get install kubelet kubectl kubeadm

alexsandro-xpt

using System;
using System.Buffers;
using System.IO.Pipelines;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.Configuration;

alexsandro-xpt

version: '3'

services:
  sqlserver2019:
    image: mcr.microsoft.com/mssql/server:2019-CTP3.1-ubuntu
    environment:
      ACCEPT_EULA: Y
      SA_PASSWORD: SqlServer2019!
    ports:
      - "41434:1433"

alexsandro-xpt

FROM mcr.microsoft.com/dotnet/core/aspnet:2.2 AS base

WORKDIR /app
EXPOSE 80

# DEBUG

FROM mcr.microsoft.com/dotnet/core/sdk:2.2 AS debug

WORKDIR /app

alexsandro-xpt

using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.Hosting;

public class Program
{
    public static void Main(string[] args) =>
        Host.CreateDefaultBuilder(args)
        .ConfigureWebHostDefaults(webBuilder =>

alexsandro-xpt

cd /home/<user>/
sudo apt-get install unzip
wget https://dl.google.com/android/repository/sdk-tools-linux-4333796.zip
unzip sdk-tools-linux-4333796.zip -d Android
rm sdk-tools-linux-4333796.zip
sudo apt-get install -y lib32z1 openjdk-8-jdk
export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64
export PATH=$PATH:$JAVA_HOME/bin
printf "\n\nexport JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64\nexport PATH=\$PATH:\$JAVA_HOME/bin" >> ~/.bashrc
cd Android/tools/bin

alexsandro-xpt

public abstract class ValueObject<T>
    where T : ValueObject<T>
{
    public override bool Equals(object obj)
    {
        var valueObject = obj as T;

        if (ReferenceEquals(valueObject, null))
            return false;