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I've never heard of anyone using panic for exception-style recovery. That's anathema to the whole idea of Result<T,V>. But I suppose if it's possible, it will b

I've never heard of anyone using panic for exception-style recovery. That's anathema to the whole idea of Result<T,V>. But I suppose if it's possible, it will be normal for someone.

Zambyte 1y ago
I'm not as familiar with the Rust ecosystem, but I know it is used all the time in Go. For example, the standard http server library wraps user provided endpoint handler functions with panic handlers.
- nicoburns 1y ago
  Is that used for application-level errors though? Rust web servers do that too, but it is used a fallback to avoid bringing down the whole server due to an unexpected crash. It is not a mechanism you would use intentionally.
  - 9rx 1y ago
    encoding/json uses uses exception handlers for control flow.
  - Zambyte 1y ago
    Probably not. I have never used panic / recover in application code at least.
- dhruvrajvanshi 1y ago
  I suppose it's a matter of perspective but I don't see returning a 500 as "Recovering from the error". The user's request has still failed. It just hasn't taken down the server. IMO this is still fine.
  - Zambyte 1y ago
    It is quite literally using the "recover" function in go, so I think it's accurate to call it "recovering". > this is fine I didn't mention the merit, just that it is exception style control flow.
    - Zambyte 1y ago
      Reading my top level comment again, I realized I did refer to the Zig way as "nice" relative to the exception style control flow.