Semantic highlighting in OmniSharp and C# extension for VS Code

c-sharp omnisharp visual studio code

Two days ago I blogged about doing semantic classification of C# code using Roslyn. Today, I wanted to draw your attention to a new feature we have recently shipped in OmniSharp and which is now available as experimental feature in C# extension for VS Code, and that’s improved OmniSharp semantic highlighting.

Standalone Q# console applications

q-sharp quantum computing
Last week I wrote a guest post on the Q# community blog about the new standalone/self-contained Q# applications that were introduced in Microsoft Quantum Development Kit 0.11.2004.2825. In the post I go over the various aspects of the feature, discuss the new @EntryPoint() attribute that was introduced into Q# and dive deeper into some implementation details. Enjoy the article!

C# semantic classification with Roslyn

c-sharp roslyn

A while ago, I blogged about using Roslyn’s completion service. In today’s post, I wanted to continue looking at some of the excellent compiler features that can be utilized to build IDE-like features in your projects. This time, we will look at how to do semantic classification of the code using Roslyn.

Introduction to quantum computing with Q# – Part 3, Single qubit gates

intro to qc q-sharp quantum computing

We left off in the last post after having discussed the Hadamard gate - our first quantum gate - and how it can be used to crate a uniform superposiiton for a single qubit. We are going to continue today by exploring other single qubit gates, discussing the underlying mathematics and, of course, testing it all out with some Q# code.

Decompilation support in OmniSharp and C# Extension for VS Code

c-sharp omnisharp visual studio code

One of the nice new features that we shipped in OmniSharp recently, and that has already made its way into the C# Extension for VS Code is support for decompilation. It was released in April as part of 1.35.0 release of OmniSharp. Let’s have a quick look at how you can get it up and running.

Introduction to quantum computing with Q# – Part 2, Superposition

intro to qc q-sharp quantum computing

In the previous post in this series we mentioned the concept of superposition briefly. Let’s use this second part to dive deeper into the mathematics of it, meet the cat of Schrödinger and try to find some simple quantum computing use cases for it.

.NET 5 preview support in OmniSharp and C# Extension for VS Code

net 5 omnisharp visual studio code

As we all know, we have recently been spoiled with the first preview release of .NET 5. Additionaly, Preview 2 is just around the corner and is already available via dotnet-install scripts.

While it’s still early days, we would want that OmniSharp users can work with .NET 5 as soon as possible, so we have just added support for .NET 5 in OmniSharp.

Let me quickly walk you through what you need to do to take advantage of that.

Introduction to quantum computing with Q# – Part 1, The background and the qubit

intro to qc q-sharp quantum computing

Quantum mechanics is one of the fundamental theories of physics, and has been tremendously successful at describing the behavior of subatomic particles. However, its counter-intuitive probabilistic nature, bizarre rules and confusing epistemology have troubled some of the greatest physicists of the 20th century, even prompting Albert Einstein to remark “Old Man (often translated as ‘God’) doesn’t play dice”.

In this post I am starting a new series that will introduce the basics of quantum computing - using examples in Q#.

ASP.NET Core MVC 3.x – AddMvc(), AddMvcCore(), AddControllers() and other bootstrapping approaches

net core asp.net core

There are several ways of bootstrapping your MVC applications on top of ASP.NET Core 3.x. One thing that you need to do, in order to use the framework, is to initialize it into the state where it can actually discover your controllers, views, pages and expose them as HTTP endpoints.

I’ve recently had some conversations with folks about that, and it occurred to me that this is not necessarily all that obvious to everyone. That’s because there are a few ways of doing that, so let’s quickly run through them.

Hidden features of OmniSharp and C# extension for VS Code

omnisharp roslyn visual studio code

OmniSharp powers intellisense and language services in C# plugins and extensions for numerous editors, including VS Code. When we build things into OmniSharp, we typically try to keep things lightweight (of course if the term “lightweight” applies to anything related to MSBuild…) and non-invasive. This means that many features/tweaks are actually opt-in by default, and wouldn’t normally show up on their own.

In this post I wanted to show you a few of such less known features.

About

Hi! I'm Filip W., a software architect from Zürich 🇨🇭. I like Toronto Maple Leafs 🇨🇦, Rancid and quantum computing. Oh, and I love the Lowlands 🏴󠁧󠁢󠁳󠁣󠁴󠁿.

You can find me on Github, on Mastodon and on Bluesky.

My Introduction to Quantum Computing with Q# and QDK book
Microsoft MVP

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