- /// Returns a mutable reference to the entry if occupied, or the VacantEntry if vacant.
- pub fn get(self) -> Result<&'a mut Any, VacantEntry<'a>> {
+ /// Ensures a value is in the entry by inserting the default if empty, and returns
+ /// a mutable reference to the value in the entry.
+ ///
+ /// It is the caller’s responsibility to ensure that the key of the entry corresponds with
+ /// the type ID of `value`. If they do not, memory safety may be violated.
+ pub unsafe fn or_insert(self, default: Box<Any>) -> &'a mut Any {
+ match self {
+ Entry::Occupied(inner) => inner.into_mut(),
+ Entry::Vacant(inner) => inner.insert(default),
+ }
+ }
+
+ /// Ensures a value is in the entry by inserting the result of the default function if empty,
+ /// and returns a mutable reference to the value in the entry.
+ ///
+ /// It is the caller’s responsibility to ensure that the key of the entry corresponds with
+ /// the type ID of `value`. If they do not, memory safety may be violated.
+ pub unsafe fn or_insert_with<F: FnOnce() -> Box<Any>>(self, default: F) -> &'a mut Any {