std::collections::hash_map::RawVacantEntryMut - Rust
Description: API documentation for the Rust `RawVacantEntryMut` struct in crate `std`.
Keywords: rust, rustlang, rust-lang, RawVacantEntryMut

# [−][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)`[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<'a, K, V, S> Debug for RawVacantEntryMut<'a, 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> !Send for RawVacantEntryMut<'a, K, V, S>`

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

## Blanket Implementations

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

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

Performs the conversion.

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

#### `type Error = !`

🔬 This is a nightly-only experimental API. (`try_from` #33417)

The type returned in the event of a conversion error.

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

🔬 This is a nightly-only experimental API. (`try_from` #33417)

Performs the conversion.

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

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

🔬 This is a nightly-only experimental API. (`try_from` #33417)

The type returned in the event of a conversion error.

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

🔬 This is a nightly-only experimental API. (`try_from` #33417)

Performs the conversion.

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

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

Performs the conversion.

### `impl<T> Borrow 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<'a, R: Read + ?Sized> Read for &'a mut Rimpl<'a, W: Write + ?Sized> Write for &'a mut W`
`fn borrow(&self) -> &T`[src]

Immutably borrows from an owned value. Read more

### `impl<T> BorrowMut 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<'a, R: Read + ?Sized> Read for &'a mut Rimpl<'a, W: Write + ?Sized> Write for &'a 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 get_type_id(&self) -> TypeId`[src]

🔬 This is a nightly-only experimental API. (`get_type_id` #27745)

this method will likely be replaced by an associated static

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

# Help

## Keyboard Shortcuts

`?`
  Show this help dialog
`S`
  Focus the search field
`↑`
  Move up in search results
`↓`
  Move down in search results
`↹`
  Switch tab
`⏎`
  Go to active search result
`+`
  Expand all sections
`-`
  Collapse all sections

## Search Tricks

Prefix searches with a type followed by a colon (e.g., `fn:`) to restrict the search to a given type.

Accepted types are: `fn`, `mod`, `struct`, `enum`, `trait`, `type`, `macro`, and `const`.

Search functions by type signature (e.g., `vec -> usize` or `* -> vec`)

Search multiple things at once by splitting your query with comma (e.g., `str,u8` or `String,struct:Vec,test`)