I wrote a function in c# which initially returned a named tuple.
But now, I only need one field of this tuple and I would like to keep the name because it helps me to understand my code.
private st...

In .NET<5 and .NET Core 3.1 the following code
var d = new Dictionary<string, int> { { "a", 0 }, { "b", 0 }, { "c", 0 } };
foreach (var k in d.Keys)
{
d[k...

I am new to nullable.
Is there a meaningful difference between the possible notations?
string?[] str
string[]? str
and even string?[]? str seems to all be valid

Is there a difference in the declaration of lambda expressions between the .NET Framework and .NET Core?
The following expressions compiles in .NET Core:
var lastShift = timeline.Appointments
...

Interestingly, when I go to the definition of IList<T> in the Visual Studio, it's not the same as the source code on GitHub.

IList<T>
public interface IList<T> : ICollection<T...

I encountered an incompatible problem while I was trying to upgrade my projects from .NET core 3.1 to the latest .NET 5.
My original code has a validation logic to check invalid file name character...

I'm following the Create a web API with ASP.NET Core and MongoDB Tutorial
And I'm missing something very basic, how to serialize a Json object that has a property that could be "multi-type&quo...

I have a project using .NET Standard 2.1 and .NET core 3.1 - so the C# version is 8.0
According to a few articles I found (e.g. one, two), it should be possible to define a record type using this s...

With C# 8 we got ranges to get "sub lists".
While this works:
var array = new string[] { "abc", "def", "ghi" };
var subArray = array[0..1]; // works

This do...

I know this might seem impossible at first and it seemed that way to me at first as well, but recently I have seen exactly this kind of code throw a NullReferenceException, so it is definitely poss...

I'm your classic OOP developer. However since I discovered purely functional programming languages I've been ever intrigued to the why since OOP seemed to solve most business cases in a reasonable ...