Hacker News: jafffsudshttps://news.ycombinator.com/user?id=jafffsudsHacker News RSShttps://hnrss.org/hnrss v2.1.1Sun, 24 May 2026 19:49:53 +0000<![CDATA[New comment by jafffsuds in ".NET (OK, C#) finally gets union types"]]>He's been busy with the typescript-go project

]]>Sun, 24 May 2026 04:29:17 +0000https://news.ycombinator.com/item?id=48254377jafffsudshttps://news.ycombinator.com/item?id=48254377https://news.ycombinator.com/item?id=48254377<![CDATA[New comment by jafffsuds in ".NET (OK, C#) finally gets union types"]]>What you are describing is something different called a disjoint union which will maintain the identities of the left and right values when there is overlap.

The C# unions appear to behave like unions, not disjoint unions.

]]>Sun, 24 May 2026 04:11:38 +0000https://news.ycombinator.com/item?id=48254295jafffsudshttps://news.ycombinator.com/item?id=48254295https://news.ycombinator.com/item?id=48254295