Re:Several core problems with Rust
by josefx on Monday November 24, 2025 @04:19AM
(#46031997)
Sys exit does not crash. It raises a SystemExit exception, which can be caught on any layer above it. Given that python uses exceptions for trivial things like loop termination this can be considered normal flow control.
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And, by default, panicking in Rust also doesn't crash, it begins a stack unwind which can be caught on any layer above it with catch_unwind.
Yeah, and in Rust you can catch the panic from `unwrap()` with panic::catch_unwind. You just don't, for the same reason you don't catch SystemExits. If a SystemExit is being thrown, it's because you want to crash; if you don't wan to crash, don't throw a SystemExit.