pub fn is_empty(&self) -> bool {
        let keys_is_empty = self.keys.is_empty();
        let values_is_empty = self.values.is_empty();
        if keys_is_empty != values_is_empty {
            env::panic(ERR_INCONSISTENT_STATE)
        } else {
            keys_is_empty
        }
    }
/// Returns `true` if the map contains no elements.
Returns `true` if the map contains no elements.
Returns ` true ` if the map contains no elements .
pub fn is_empty(&self) -> bool {
        let keys_is_empty = self.keys.is_empty();
        let values_is_empty = self.values.is_empty();
        if keys_is_empty != values_is_empty {
            env::panic(ERR_INCONSISTENT_STATE)
        } else {
            keys_is_empty
        }
    }
pub fn is_empty ( & self ) -> bool { let keys_is_empty = self . keys . is_empty ( ) ; let values_is_empty = self . values . is_empty ( ) ; if keys_is_empty != values_is_empty { env :: panic ( ERR_INCONSISTENT_STATE ) } else { keys_is_empty } }
Returns `true` if the map contains no elements.
Returns ` true ` if the map contains no elements .
&self