fn collect_result()

in gazebo/src/ext/vec.rs [21:35]

• 14 lines of code
• 2 McCabe index (conditional complexity)

fn collect_result<T, E>(mut it: impl ExactSizeIterator<Item = Result<T, E>>) -> Result<Vec<T>, E> {
    match it.next() {
        None => Ok(Vec::new()),
        Some(Err(e)) => Err(e),
        Some(Ok(x)) => {
            // +1 for the element we have already consumed
            let mut res = Vec::with_capacity(it.len() + 1);
            res.push(x);
            for x in it {
                res.push(x?);
            }
            Ok(res)
        }
    }
}