weak_table::weak_weak_hash_map

Enum Entry

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pub enum Entry<'a, K: 'a + WeakKey, V: 'a + WeakElement> {
    Occupied(OccupiedEntry<'a, K, V>),
    Vacant(VacantEntry<'a, K, V>),
}
Expand description

Represents an entry in the table which may be occupied or vacant.

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Occupied(OccupiedEntry<'a, K, V>)

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Vacant(VacantEntry<'a, K, V>)

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impl<'a, K: WeakKey, V: WeakElement> Entry<'a, K, V>

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pub fn or_insert(self, default: V::Strong) -> V::Strong

Ensures a value is in the entry by inserting a default value if empty, and returns a mutable reference to the value in the entry.

O(1) time

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pub fn or_insert_with<F: FnOnce() -> V::Strong>(self, default: F) -> V::Strong

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.

O(1) time

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pub fn key(&self) -> &K::Strong

Returns a reference to this entry’s key.

O(1) time

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impl<'a, K: WeakKey, V: WeakElement> Debug for Entry<'a, K, V>
where K::Strong: Debug, V::Strong: Debug,

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

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impl<'a, K, V> Freeze for Entry<'a, K, V>
where <V as WeakElement>::Strong: Freeze, <K as WeakElement>::Strong: Freeze,

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impl<'a, K, V> RefUnwindSafe for Entry<'a, K, V>

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impl<'a, K, V> Send for Entry<'a, K, V>
where <V as WeakElement>::Strong: Send, <K as WeakElement>::Strong: Send, K: Send, V: Send,

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impl<'a, K, V> Sync for Entry<'a, K, V>
where <V as WeakElement>::Strong: Sync, <K as WeakElement>::Strong: Sync, K: Sync, V: Sync,

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impl<'a, K, V> Unpin for Entry<'a, K, V>
where <V as WeakElement>::Strong: Unpin, <K as WeakElement>::Strong: Unpin,

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impl<'a, K, V> !UnwindSafe for Entry<'a, K, V>

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.