Enum linked_hash_map::Entry

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pub enum Entry<'a, K: 'a, V: 'a, S: 'a = RandomState> {
    Occupied(OccupiedEntry<'a, K, V, S>),
    Vacant(VacantEntry<'a, K, V, S>),
}
Expand description

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

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

An occupied Entry.

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

A vacant Entry.

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impl<'a, K: Hash + Eq, V, S: BuildHasher> Entry<'a, K, V, S>

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pub fn key(&self) -> &K

Returns the entry key

§Examples
use linked_hash_map::LinkedHashMap;

let mut map = LinkedHashMap::<String, u32>::new();

assert_eq!("hello", map.entry("hello".to_string()).key());
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pub fn or_insert(self, default: V) -> &'a mut V

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

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

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.

Auto Trait Implementations§

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impl<'a, K, V, S> Freeze for Entry<'a, K, V, S>
where K: Freeze,

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

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impl<'a, K, V, S = RandomState> !Send for Entry<'a, K, V, S>

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impl<'a, K, V, S = RandomState> !Sync for Entry<'a, K, V, S>

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impl<'a, K, V, S> Unpin for Entry<'a, K, V, S>
where K: Unpin,

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

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.