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by behindsight 172 days ago
> You can also do some inbetween systems programming in C# if you don’t care about a VM or msft.

C# Native AOT gets rid of the JIT and gives you a pretty good perf+memory profile compared to the past.

It's mostly the stigma of .NET Framework legacy systems that put people off, but modern C# projects are a breeze.
2 comments
vips7L 172 days ago
AFAIK there’s still holes like reflection and you have some work, but if that’s changed that’s really good. I suspect it’ll be hard for C# to escape the stench of “enterprise” though.

I’m looking forward to seeing how it shapes out over the next few years. Especially once they release union types.

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neonsunset 172 days ago
FWIW JIT is rarely an issue, and enables strong optimizations not available in AOT (it has its own, but JIT is overall much better for throughput). RyuJIT can do the same speculative optimizations OpenJDK Hotspot does except the language has fewer abstractions which are cheaper and access to low-level programming which allows it to have much different performance profile.

NativeAOT's primary goal is reducing memory footprint, binary size, making "run many methods once or rarely" much faster (CLI and GUI applications, serverless functions) and also shipping to targets where JIT is not allowed or undesirable. It can also be used to ship native dynamically or statically (the latter is tricky) linked libraries.

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