Here are some of the reasons why nullable reference types are less than ideal:

• Invoking a member on a null value will issue a System.NullReferenceException exception, and every invocation that results in a System.NullReferenceException in production code is a bug. Unfortunately, however, with nullable reference types we “fall in” to doing the wrong thing rather than the right thing. The “fall in” action is to invoke a reference type without checking for null.
• There’s an inconsistency between reference types and value types (following the introduction of Nullable<T>) in that value types are nullable when decorated with  “?” (for example, int? number); otherwise, they default to non-nullable. In contrast, reference types are nullable by default. This is “normal” to those of us who have been programming in C# for a long time, but if we could do it all over, we’d want the default for reference types to be non-nullable and the addition of a “?” to be an explicit way to allow nulls.
• It’s not possible to run static flow analysis to check all paths regarding whether a value will be null before dereferencing it, or not. Consider, for example, if there were unmanaged code invocations, multi-threading, or null assignment/­replacement based on runtime conditions. (Not to mention whether analysis would include checking of all library APIs that are invoked.)
• There’s no reasonable syntax to indicate that a reference type value of null is invalid for a particular declaration.
• There’s no way to decorate parameters to not allow null. 

Cookie-based TempData provider for ASP.NET Core MVC applications. TempData values are serialized in BSON and protected via the data protection API. 

1. Welcome
2. Introducing Go
3. Let’s Go!
4. Variables, Constants, and Assignments
5. Basic Data Types
6. Control Structures
7. Arrays, Slices, and Maps
8. User-Defined Types
9. Concurrency
10. Standard Packages
11. Go Further 

jQuery has a new release! It’s been a while since our last release, but we expect this to be the last minor release in the 3.x branch, and then we will move on to the overhaul that will be jQuery 4.0. But before we get to 4.0, we’re excited to share the bug fixes and improvements included in jQuery 3.4.0 

If you are used to manipulate HTML forms, you probably know that each checkbox is a separate variable (or maybe an ngModel with AngularJS).  Demo

Sometimes, it could be usefull to manipulate all these checkboxes as a unique array.

angular.checkboxes module lets you turn your list of checkboxes into a unique destination array, providing :

• two-way binding: manipulate the destination array will check/uncheck the checkboxes AND check/uncheck the checkboxes will modify the destination array.
• no isolated scope for each checkbox: the directive does not create new child scope.
• a mtCheckboxController: internal controller can be injected to other directives. 

dnSpy is a debugger and .NET assembly editor. You can use it to edit and debug assemblies even if you don't have any source code available.

Some Features 

• Debug .NET Framework, .NET Core and Unity game assemblies, no source code required
• Set breakpoints and step into any assembly
• Locals, watch, autos windows 
• All metadata can be edited
• Edit methods and classes in C# or Visual Basic with IntelliSense, no source code required
• Add new methods, classes or members in C# or Visual Basic
• IL editor for low level IL method body editing 

Using PostgreSQL with Entity Framework in ASP.NET MVC

using System; 
 
namespace MyVerboseApp 
{ 
    public class Program 
    { 
        public static void Main(string[] args) 
        { 
            Console.WriteLine("Hello World!"); 
        } 
    } 
}

 // See https://aka.ms/new-console-template for more information
Console.WriteLine("Hello, World!");

dotnet new console --framework net5.0 --target-framework-override net6.0

<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
    <OutputType>Exe</OutputType>
-    <TargetFramework>net5.0</TargetFramework>
+    <TargetFramework>net6.0</TargetFramework>
  </PropertyGroup>
</Project>

If you didn’t know SQLite supports CTEs (in 3.8.3 and higher), this might be an eye opener.