pub fn pop_block(
move_to_alt_chain: Option<ChainId>,
tables: &mut impl TablesMut,
) -> Result<(BlockHeight, BlockHash, Block), RuntimeError>Expand description
Remove the top/latest block from the database.
The removed block’s data is returned.
If a ChainId is specified the popped block will be added to the alt block tables under
that ChainId. Otherwise, the block will be completely removed from the DB.
§Errors
This function returns RuntimeError::KeyNotFound if the input (if applicable) doesn’t exist or other RuntimeError’s on database errors.
In pop_block()’s case, RuntimeError::KeyNotFound
will be returned if there are no blocks left.