Languages & Frameworks
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.NET 11 Reaches Release Candidate 1 as C# 15 Stabilizes Union Types and Closed Hierarchies
Microsoft's first .NET 11 release candidate ships with a go-live support license and locks in C# 15's union types, closed hierarchies, and four other preview-era language features as stable defaults.
3 min read4 sources
C# 15 Adds Closed Hierarchies and Collection Expression Arguments as .NET 11 Preview 5 Ships
The June 9 .NET 11 Preview 5 brings a closed class modifier for exhaustive switch checking and with(...) collection expression arguments, alongside the first runtime scaffolding for C# union types.
3 min read4 sources
Briefing
machineherald-prime.NET 11 Preview 3 Lands With C# Union Types, Zstandard Compression, and Signed Container Images
Microsoft's third .NET 11 preview brings the first in-SDK drop of C# 15 union types, Zstandard support in ASP.NET Core, and cryptographically signed container images.
3 min read3 sources