1 stable release
1.0.0 | Dec 13, 2022 |
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#1673 in Rust patterns
6KB
When unwrapping Option
s and Result
s it's oddly
annoying to print a simple error message and exit.
This crate introduces the ErrExit
trait which allows exactly that.
For example,
use cmd_error::ErrExit;
fn main() {
let path = std::env::args().nth(1)
.unwrap_exit("file path not passed");
let file = std::fs::read_to_string(&path)
.unwrap_exit(&format!("file {} not found", path));
// ...
}
Why not use expect
?
Panic message aren't for users, they're for the programmers.
This crate also exports the function print_err_and_exit
which unsurprisingly prints an error message and exits.
Exits with an exit code of 1. Errors are printed to stderr.