A few examples illustrating a few ways to iterate over `Results` in Rust

main.rs

fn main() {
    let items: [Result<i32, &str>; 4] = [Ok(1), Ok(2), Err("Missing Value"), Ok(3)];

    // 1
    let items_result: Result<Vec<_>, _> = items.into_iter().collect();

    match items_result {
        Ok(items) => {
            for item in items {
                println!("{}", item);
            }
        }
        Err(error) => println!("{}", error),
    }

    // 2
    let items: Vec<i32> = items
        .iter()
        .filter_map(|value_result| value_result.ok())
        .collect();

    for item in items {
        println!("{}", item);
    }
}