# [−][src]Struct std::collections::hash_map::RawVacantEntryMut

    pub struct RawVacantEntryMut<'a, K: 'a, V: 'a, S: 'a> { /* fields omitted */ }

🔬 This is a nightly-only experimental API. (`hash_raw_entry` #56167)

A view into a vacant entry in a `HashMap`. It is part of the `RawEntryMut` enum.

## Methods

### `impl<'a, K, V, S> RawVacantEntryMut<'a, K, V, S>`[src]

#### `pub fn insert(self, key: K, value: V) -> (&'a mut K, &'a mut V) where
K: Hash,
S: BuildHasher,` [src]

🔬 This is a nightly-only experimental API. (`hash_raw_entry` #56167)

Sets the value of the entry with the VacantEntry's key, and returns a mutable reference to it.

#### `pub fn insert_hashed_nocheck(
self,
hash: u64,
key: K,
value: V
) -> (&'a mut K, &'a mut V) where
K: Hash,
S: BuildHasher,` [src]

🔬 This is a nightly-only experimental API. (`hash_raw_entry` #56167)

Sets the value of the entry with the VacantEntry's key, and returns a mutable reference to it.

## Trait Implementations

### `impl<'_, K, V, S> Debug for RawVacantEntryMut<'_, K, V, S>`[src]

#### `fn fmt(&self, f: &mut Formatter) -> Result`[src]

Formats the value using the given formatter. Read more

## Auto Trait Implementations

### `impl<'a, K, V, S> !UnwindSafe for RawVacantEntryMut<'a, K, V, S>`

### `impl<'a, K, V, S> RefUnwindSafe for RawVacantEntryMut<'a, K, V, S> where
K: RefUnwindSafe,
S: RefUnwindSafe,
V: RefUnwindSafe,`

### `impl<'a, K, V, S> Unpin for RawVacantEntryMut<'a, K, V, S>`

### `impl<'a, K, V, S> Send for RawVacantEntryMut<'a, K, V, S> where
K: Send,
S: Sync,
V: Send,`

### `impl<'a, K, V, S> Sync for RawVacantEntryMut<'a, K, V, S> where
K: Sync,
S: Sync,
V: Sync,`

## Blanket Implementations

### `impl<T> From<T> for T`[src]

#### `fn from(t: T) -> T`[src]

Performs the conversion.

### `impl<T, U> TryFrom<U> for T where
U: Into<T>,` [src]

#### `type Error = !`

The type returned in the event of a conversion error.

#### `fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>`[src]

Performs the conversion.

### `impl<T, U> Into<U> for T where
U: From<T>,` [src]

#### `fn into(self) -> U`[src]

Performs the conversion.

### `impl<T, U> TryInto<U> for T where
U: TryFrom<T>,` [src]

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

The type returned in the event of a conversion error.

#### `fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>`[src]

Performs the conversion.

### `impl<T> Borrow<T> for T where
T: ?Sized,` [src]

####
ⓘImportant traits for &'_ mut I

### Important traits for &'_ mut I

`impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<'_, F> Future for &'_ mut F where
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;impl<'_, R: Read + ?Sized> Read for &'_ mut Rimpl<'_, W: Write + ?Sized> Write for &'_ mut W`
`fn borrow(&self) -> &T`[src]

Immutably borrows from an owned value. Read more

### `impl<T> BorrowMut<T> for T where
T: ?Sized,` [src]

####
ⓘImportant traits for &'_ mut I

### Important traits for &'_ mut I

`impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<'_, F> Future for &'_ mut F where
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;impl<'_, R: Read + ?Sized> Read for &'_ mut Rimpl<'_, W: Write + ?Sized> Write for &'_ mut W`
`fn borrow_mut(&mut self) -> &mut T`[src]

Mutably borrows from an owned value. Read more

### `impl<T> Any for T where
T: 'static + ?Sized,` [src]

#### `fn type_id(&self) -> TypeId`[src]

Gets the `TypeId` of `self`. Read more