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Tag: union types

C# 15 union types native language feature in .NET 11 RC1 with compiler-enforced exhaustive pattern matching

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.NET 11 RC1: C# 15 Union Types Are Production-Ready

.NET 11 RC1 ships with go-live support and C# 15 as default. Union types replace ...

6 days ago

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.NET 11 RC1: C# 15 Unions, Runtime Async, Go-Live

.NET 11 RC1 ships with a production go-live license, C# 15 union types, and Runtime ...

September 11, 2026

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.NET 11 RC1: C# 15 Unions and Runtime Async Go Production

.NET 11 RC1 ships with a go-live license, C# 15 union types as default, runtime-native ...

September 10, 2026

C# 15 union types and .NET 11 Preview 6 code visualization

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C# 15 in .NET 11 Preview 6: Union Types and Closed Hierarchies

.NET 11 Preview 6 ships C# 15 with union types, closed hierarchies, and runtime async ...

July 31, 2026

C# union types diagram showing discriminated unions in .NET 11 Preview 4

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C# Union Types Land in .NET 11: No More OneOf Hacks

C# 15 ships the union keyword in .NET 11 Preview 4. After years of OneOf ...

May 24, 2026