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C# 9: Record Types Introduction & Deep-Dive

Record types are immutable reference types that provide value semantics for equality. Don’t worry – record types aren’t as complicated as they sound. Let’s break it all down.

Announcing .NET 5.0

We’re excited to release .NET 5.0 today and for you to start using it. It’s a major release — including C# 9 and F# 5 — with a broad set of new features and compelling improvements. It’s already in active use by teams at Microsoft and other companies, in production and for performance testing.

Astonishing Performance of .NET 5

I migrated Fusion to .NET 5 today — and honestly, I was absolutely astonished by the performance boost it brings.

Generating Code in C#

A new feature in .NET 5 that will be available in C# 9.0 is called “source generators.” It provides a means to create code based on expected conditions in existing code. This feature is baked into the compiler, creating a seamless, native code generation experience. In this article, I’ll dive into source generators and demonstrate how you can use them for your own implementation needs.

C# 9.0 on the record

With every new version of C# we strive for greater clarity and simplicity in common coding scenarios, and C# 9.0 is no exception. One particular focus this time is supporting terse and immutable representation of data shapes.

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