[exrook]

I'm confused, have you found the try operator ("?") insufficient for your use cases? I believe it does what you are describing, ex:

    fn process_file(p: Path) -> Result<String, io::Error> {
        let file = File::open(p)?; //Return err if file can't be opened
        let mut out = String::new();
        file.read_to_string(&mut out)?; // Return err if read fails
        out
    }

If you want to handle the error case within the same function `try` blocks are available in nightly[0] and will eventually come to stable[1]

[0] https://doc.rust-lang.org/nightly/unstable-book/language-fea...

[1] https://github.com/rust-lang/rust/issues/31436

[Arnavion]

`?` only helps if the thing you want to do on Err is return from the whole function. You can't use it for finer-grained break / continue / exit-from-current-block (until `try` blocks are stabilized).