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Comment by dagmx | Hacker News Reader

Debugger visualization is a really great idea. I hadn’t thought of using attribute annotation to do it but now I’m wishing more languages had that.

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Do any other languages have anything like this debugger_visualizer attribute?

Not that I know of. But I’d certainly like to know that I missed it

C# has the `DebuggerDisplay` attribute: https://learn.microsoft.com/en-us/visualstudio/debugger/usin...

Yes and much more like DebuggerVisualizerAttribute which allows you to present data in any possible way. https://learn.microsoft.com/en-us/visualstudio/debugger/crea...

I guess repr is kind of similar in python but not really

Python's repr is Rust's impl Debug for Foo

A slightly different thing - Visual Studio allows you to create custom visualizations for any live debug data. This is absolutely wonderful.

One of the nice things about Rust's RFC process for new features is they answer questions like this: https://rust-lang.github.io/rfcs/3191-debugger-visualizer.ht...

edit: actually, I guess that focuses more on the debugger side, and less on the language side, so not a great answer to your question.

Not exactly but for shared libraries in general it's possible to ship some accompanying Python that will get installed and automatically loaded by GDB.

You can even embed that Python script within the shared object using some scary ELF tricks - I was surprised, to say the least, to discover this is supported.

Perl has Smart::Comments, original work by the brilliant Damian Conway.

https://metacpan.org/pod/Smart::Comments

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