Enum indexmap::map::raw_entry_v1::RawEntryMut

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pub enum RawEntryMut<'a, K, V, S> {
    Occupied(RawOccupiedEntryMut<'a, K, V, S>),
    Vacant(RawVacantEntryMut<'a, K, V, S>),
}
Expand description

Raw entry for an existing key-value pair or a vacant location to insert one.

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

Existing slot with equivalent key.

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

Vacant slot (no equivalent key in the map).

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impl<'a, K, V, S> RawEntryMut<'a, K, V, S>

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pub fn index(&self) -> usize

Return the index where the key-value pair exists or may be inserted.

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pub fn or_insert( self, default_key: K, default_value: V ) -> (&'a mut K, &'a mut V)
where K: Hash, S: BuildHasher,

Inserts the given default key and value in the entry if it is vacant and returns mutable references to them. Otherwise mutable references to an already existent pair are returned.

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pub fn or_insert_with<F>(self, call: F) -> (&'a mut K, &'a mut V)
where F: FnOnce() -> (K, V), K: Hash, S: BuildHasher,

Inserts the result of the call function in the entry if it is vacant and returns mutable references to them. Otherwise mutable references to an already existent pair are returned.

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pub fn and_modify<F>(self, f: F) -> Self
where F: FnOnce(&mut K, &mut V),

Modifies the entry if it is occupied.

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impl<K: Debug, V: Debug, S> Debug for RawEntryMut<'_, K, V, S>

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<'a, K, V, S> Freeze for RawEntryMut<'a, K, V, S>

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

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impl<'a, K, V, S> Send for RawEntryMut<'a, K, V, S>
where S: Sync, K: Send, V: Send,

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impl<'a, K, V, S> Sync for RawEntryMut<'a, K, V, S>
where S: Sync, K: Sync, V: Sync,

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impl<'a, K, V, S> Unpin for RawEntryMut<'a, K, V, S>

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impl<'a, K, V, S> !UnwindSafe for RawEntryMut<'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.