Recent Posts

Every long-lived codebase is haunted. This Halloween, we'll use AI coding agents, along with a few trusty .NET tools, to find and safely banish dead code, zombie NuGet packages, and feature flags that never went away.

We thought the series was over, but the demo had one more question for us: can a C# 15 app built on unions, closed hierarchies, and union-aware System.Text.Json compile to a native binary? We publish Tiles & Tokens with Native AOT and find out which parts of the series pass, which don't, and why.

We store Tiles & Tokens saved games in Postgres with EF Core 11: nested complex types in columns and JSON, indexes on nested complex properties, real execution plans, and an honest look at what EF Core 11 RC1 can't map yet - including unions.

Pause the game, close the app, and resume tomorrow. System.Text.Json in .NET 11 knows about unions - but how much of a C# 15 game state can it save and load out of the box? We find out what works natively, what needs an attribute, and what still needs a workaround on RC1.

Unions are great when the cases are unrelated. When they share behavior, C# 15's closed hierarchies give you a class hierarchy the compiler knows is complete. We model Tiles & Tokens victory conditions and placement rules, find the assembly boundary, and build a checklist for choosing between unions and closed types.

C# 15 adds native union types. We rebuild the Tiles & Tokens turn model as a union, let the compiler catch a missing case, replace a hand-rolled Result<T>, and look at how unions are lowered - including the empty default value the compiler won't warn you about.

It's your turn. You can roll, play a card, or pass. How does your code know which one happened? We kick off a series on C# 15 and .NET 11 domain modeling by looking at three common ways to model a game turn, and how each one lets bugs through.

Like so many things Aspire, a year makes all the difference, and support for AI coding agents has a whole new approach.

The Aspire dashboard is great. But sometimes you want your telemetry in a terminal.

I wrote about the Aspire CLI ten months ago. Here's what changed, and what I got wrong.