pub fn new_table_page(pref: PRef) -> Page {
        let mut page = Page{ content: [0u8; PAGE_SIZE] };
        page.write_pref(PAGE_PAYLOAD_SIZE, pref);
        page
    }
/// create an empty page for a position in the table file
create an empty page for a position in the table file
create an empty page for a position in the table file
pub fn new_table_page(pref: PRef) -> Page {
        let mut page = Page{ content: [0u8; PAGE_SIZE] };
        page.write_pref(PAGE_PAYLOAD_SIZE, pref);
        page
    }
pub fn new_table_page ( pref : PRef ) -> Page { let mut page = Page { content : [ 0u8 ; PAGE_SIZE ] } ; page . write_pref ( PAGE_PAYLOAD_SIZE , pref ) ; page }
create an empty page for a position in the table file
create an empty page for a position in the table file
pref
PRef