Function scan_read 

pub fn scan_read<T, S>(
    dims: [usize; 3],
    seed: Seed<'_>,
    direction: Direction,
    checked: bool,
    input: Read<'_>,
    output: &mut Buffer,
    run: &dyn Fn(&[T], [usize; 3], Option<&[S]>, &mut Vec<S>) -> Result<(), Error>,
) -> Result<(), Error>
where
    T: Cast,
    S: Cast,