Comment by hirvi74
14 hours ago
> Next big language addition will be discriminated unions and even that is really "opt-in" if you want to use it.
I was excited for DU until I saw the most recent implementation reveal.
https://github.com/dotnet/csharplang/blob/main/proposals/uni...
Compared to the beauty of Swift:
https://docs.swift.org/swift-book/documentation/the-swift-pr...
The C# impl is still early and I think what will end up happening is that a lot of the boilerplate will end up being owned by source generators in the long term. C# team has a habit of "make it work, make it better". Whatever v1 gets released is some base capability that v2+ will end up making more terse. I'm happy and OK with that; I'd rather have ugly unions than no unions (yes, I already use OneOf)
Ah Source Generators, after all these years still badly documented, when searching you most likely will find the original implemenation meanwhile deprecated, have poor tooling with string concatenation, and only have a few great blog posts from .NET MVPs to rely on.
:shrug: we're using them very effectively and there are plenty of resources at this point.
Very useful for reducing boilerplate and we can do some interesting things with it. One use case: we generate strongly typed "LLM command" classes from prompt strings.
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