Function sql_support::each_chunk::each_sized_chunk

pub fn each_sized_chunk<'a, T, E, F>(
    items: &'a [T], 
    chunk_size: usize, 
    do_chunk: F
) -> Result<(), E> where
    T: 'a,
    F: FnMut(&'a [T], usize) -> Result<(), E>,