#![expect(clippy::unwrap_used, reason = "example code")]
use ohno::{AppError, IntoAppError};
fn io_operation() -> Result<(), std::io::Error> {
Err(std::io::Error::other("simulated I/O error"))
}
fn do_io_operation() -> Result<(), AppError> {
io_operation().into_app_err("failed to perform I/O operation")
}
fn main() {
let err: AppError = do_io_operation().unwrap_err();
println!("{err}");
}