I have an error e and want to figure out if the root cause was an IO error and, if it is, do something (e.g., exit with the raw error code): use std::io; fn run() -> Result<(), Box<std::error::Error>> { /* ... */ } fn main() { match run() { Ok(_) => {} Err(e) => { …

Can't to introspect error cause

stebalien August 1, 2016, 4:54pm 2

@aturon, given that you wrote the RFC, any thoughts?

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