pub fn occupied_ref(&self) -> &OccupiedEntry<EntryData> {
        use self::Entry::*;

        match self {
            Occupied(entry) => entry,
            Vacant(_) => panic!("expected occupied entry"),
        }
    }
/// Returns an immutable reference to the occupied entry.
///
/// # Panics
///
/// Panics if the variant is actually [`Entry::Vacant`].
Returns an immutable reference to the occupied entry.
Returns an immutable reference to the occupied entry .
pub fn occupied_ref(&self) -> &OccupiedEntry<EntryData> {
        use self::Entry::*;
        match self {
            Occupied(entry) => entry,
            Vacant(_) => panic!("expected occupied entry"),
        }
    }
pub fn occupied_ref ( & self ) -> & OccupiedEntry < EntryData > { use self :: Entry :: * ; match self { Occupied ( entry ) => entry , Vacant ( _ ) => panic ! ( " " ) , } }
Returns an immutable reference to the occupied entry.
Returns an immutable reference to the occupied entry .
&self
&self
panics
Panics if the variant is actually [`Entry::Vacant`].
Panics if the variant is actually [ ` Entry :: Vacant ` ] .