Enum anymap2::raw::Entry

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pub enum Entry<'a, A: ?Sized + UncheckedAnyExt> {
    Occupied(OccupiedEntry<'a, A>),
    Vacant(VacantEntry<'a, A>),
}
Expand description

A view into a single location in a RawMap, which may be vacant or occupied.

Variants§

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Occupied(OccupiedEntry<'a, A>)

An occupied Entry

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Vacant(VacantEntry<'a, A>)

A vacant Entry

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impl<'a, A: ?Sized + UncheckedAnyExt> Entry<'a, A>

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pub unsafe fn or_insert(self, default: Box<A>) -> &'a mut 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.

§Safety

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.

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pub unsafe fn or_insert_with<F: FnOnce() -> Box<A>>( self, default: F, ) -> &'a mut A

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.

§Safety

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.

Auto Trait Implementations§

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impl<'a, A> Freeze for Entry<'a, A>
where A: ?Sized,

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impl<'a, A> RefUnwindSafe for Entry<'a, A>
where A: RefUnwindSafe + ?Sized,

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impl<'a, A> Send for Entry<'a, A>
where A: Send + ?Sized,

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impl<'a, A> Sync for Entry<'a, A>
where A: Sync + ?Sized,

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impl<'a, A> Unpin for Entry<'a, A>
where A: ?Sized,

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impl<'a, A> !UnwindSafe for Entry<'a, A>

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> Any for T
where T: Any,