# Struct indexmap::map::VacantEntry [−] [src]

    pub struct VacantEntry<'a, K, V> { /* fields omitted */ }

A view into a vacant entry in a `IndexMap`. It is part of the `Entry` enum.

## Implementations

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

#### `pub fn key(&self) -> &K` [src]

Gets a reference to the key that was used to find the entry.

#### `pub fn into_key(self) -> K` [src]

Takes ownership of the key, leaving the entry vacant.

#### `pub fn index(&self) -> usize` [src]

Return the index where the key-value pair will be inserted.

#### `pub fn insert(self, value: V) -> &'a mut V` [src]

Inserts the entry’s key and the given value into the map, and returns a mutable reference to the value.

## Trait Implementations

### `impl<K: Debug, V> Debug for VacantEntry<'_, K, V>` [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> RefUnwindSafe for VacantEntry<'a, K, V> where
K: RefUnwindSafe,
V: RefUnwindSafe,`

### `impl<'a, K, V> Send for VacantEntry<'a, K, V> where
K: Send,
V: Send,`

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

### `impl<'a, K, V> Unpin for VacantEntry<'a, K, V> where
K: Unpin,`

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

## Blanket Implementations

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

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

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

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

#### `pub fn borrow(&self) -> &T` [src]

Immutably borrows from an owned value. Read more

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

#### `pub fn borrow_mut(&mut self) -> &mut T` [src]

Mutably borrows from an owned value. Read more

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

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

Performs the conversion.

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

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

Performs the conversion.

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

#### `type Error = Infallible`

The type returned in the event of a conversion error.

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

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

Performs the conversion.