#![allow(dead_code, deprecated, unused_variables, unused_mut)]
use std::str::FromStr;
fn main() {
    let mut results = vec![];
    let mut errs = vec![];
    let nums: Vec<_> = ["17", "not a number", "99", "-27", "768"]
        .into_iter()
        .map(u8::from_str)
        .inspect(|x| results.push(x.clone()))
        .inspect(|x| errs.extend(x.clone().err()))
        .flatten()
        .collect();
    assert_eq!(errs.len(), 3);
    assert_eq!(nums, [17, 99]);
    println!("results {results:?}");
    println!("errs {errs:?}");
    println!("nums {nums:?}");
}