Trait google_cloud_spanner::reader::AsyncIterator
source · [−]pub trait AsyncIterator {
fn column_metadata(&self, column_name: &str) -> Option<(usize, Field)>;
fn next<'life0, 'async_trait>(
&'life0 mut self
) -> Pin<Box<dyn Future<Output = Result<Option<Row>, Status>> + Send + 'async_trait>>
where
'life0: 'async_trait,
Self: 'async_trait;
}