C#

Default interface implementation in C# 8

Akos Nagy Nov 29, 2021

A while back the preview version of the last big feature of C# 8 came out: default interface implementation. To be honest, I'm not really a fan of this new option and I have been pretty busy, so I didn't really have the time to check it out, nor did

C#

Visual Studio extension to change the C# language version of a project

Akos Nagy Nov 29, 2021

One of the courses that I teach is a workshop on the new features of the new C# language versions. During the course we look at the different language features of C# 6 and the newer versions. To illustrate the different features, I often change the language version of the

C# 8.0 in Visual Studio 2019: what's new

Akos Nagy Nov 29, 2021

This week VS 2019 finally came out and I was going to write a very enthusiastic and very long post about the new language features of C# 8 that I was hoping would also premier with the new IDE. Well, I was wrong on all counts: no new language version,

C#

Countdown to C# 8: Making the Azure Storage API better with IAsyncEnumerable

Akos Nagy Nov 29, 2021

C# 8 is just around the corner — and with that, this post will review the last, currently publicly available feature of the new language version: asynchronous streams. If you are interested in my take on the other two, currently available features, check out my posts on them here: Non-nullable reference

C#
Azure

Countdown to C# 8: Range and Index

Akos Nagy Nov 29, 2021

In my previos post, I discussed one of the new features of C# 8: non-nullable reference types. That feature has been out for a while, so I think most of what can be said has already been said. But this time, I'm taking a look at something even newer: the

C#

Countdown to C# 8: Visual Studio 2019 first impressions and non-nullable reference types

Akos Nagy Nov 29, 2021

The launch of Visual Studio 2019 is upon us — and with the new IDE, we also get a new compiler for the newest version of our favorite programming language. There are already a lot of reviews and previews about the features that are available in the preview, but I decided

An old trick for new dogs: collection initialization with an extension method in C# 6

Akos Nagy Nov 29, 2021

During one of my courses, I was talking about the new language features of C# 3 to introduce the students LInQ. I was discussing collection initializers and extensions methods, when I made an off-hand remark about C# 6 allowing for the Add() method used for the collection initialization to be

C#
Teaching

Memento design pattern done (almost) right

Akos Nagy Nov 29, 2021

I regularly teach courses on basic object-oriented design patterns. Over the years I have come to realize that not every pattern is equally useful or equally well-thought out. One of the most common examples of patterns that have become more like anti-patterns over the years is the Singleton pattern. But

New extension in the marketplace: Linq standard query operators practice project template

Akos Nagy Nov 29, 2021

As a teacher, I'm constantly faced with a frustrating challenge: eliminating boilerplate code from demos. If students have to type a lot of boilerplate code before starting a demo together or an exercise, valuable time is lost and they don't get the same knowledge — and since this is a service

What's new in C# 7.3?

Akos Nagy Nov 29, 2021

C# 7.3 came out not long ago. I just had the time to do the update, so I thought I would do a post on it. There are a lot of other posts around about the same topic, but whatever. At least I can present this from my point

C#

Throwback Thursday: Typed SQL reader

Akos Nagy Nov 29, 2021

I've found an old HDD of mine and I got curious: what's on it? I had an old 3,5" HDD to USB adapter lying around and to my surprise, it was still working :) So I put the HDD in it, connected it to my 21st century notebook (actually,

C#
.NET

Stackoverflow Adventures: Why can I not return a reference to a dictionary value?

Akos Nagy Nov 29, 2021

A while back I found a question on SO about returning a reference to a dictionary value. Here's the code sample from the question that also explains the question itself: public class PropertyManager { private Dictionary<ElementPropertyKey, string> _values = new Dictionary<ElementPropertyKey, string>(); private string[] _values2 = new

Danger Zone: The dark side of C# 7 ref return

Akos Nagy Nov 29, 2021

C# 7.0 introduced the new feature of ref return and ref locals. I have to say, I wasn't sure about the actual usefulness of the feature, but with the recent additions of reference semantics with value types in C# 7.2 I do see how they can be useful,

C#

ILSpy plugin to decompile an assembly with Reflection.Emit API calls

Akos Nagy Nov 29, 2021

Occasionally I do stuff that's just for fun and has little industrial significance (it's sad how often those two factors seem to correlate...). One of my hobbies involves diving deep into the .NET framework and creating fun projects. One of these projects were IL-Boss, whose remnants can still be found

C#
.NET

Iterating through dictionaries the better way

Akos Nagy Nov 29, 2021

Using the right collection type at the right place is a challenging task. In my experience, most people just use List<T or Dictionary<TKey,TValue> most of the time, without thinking about other possibilities. Now that's not to say that these two are not a good

C#

dotnet falcon

C#