pub trait TryRemove {
    type Item;
    fn try_remove(&mut self, index: usize) -> Option<Self::Item>;
}

impl<T> TryRemove for Vec<T> {
    type Item = T;

    fn try_remove(&mut self, index: usize) -> Option<T> {
        if self.is_empty() {
            None
        } else {
            Some(self.remove(index))
        }
    }
}