Macro etrace::ok_or

macro_rules! ok_or {
    ($code:expr, $err:ident, $or:expr) => { ... };
    ($code:expr, $or:expr) => { ... };
}

Runs $code and returns either the unwrapped result or binds the error to $err and executes $or (or can then access the error using the identifier passed as $err)

Example:

// This code either prints the error and exits (if error) or prints the result (if ok)
let unwrapped = ok_or!(result, example_error_identifier, {
    eprintln!("Fatal error: \"{}\"", example_error_identifier);
    std::process::exit(1);
});
println!("Result: \"{}\"", unwrapped);