[][src]Struct hashbrown_tstd::hash_map::RustcVacantEntry

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

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

Implementations

impl<'a, K, V> RustcVacantEntry<'a, K, V>[src]

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

Gets a reference to the key that would be used when inserting a value through the RustcVacantEntry.

Examples

use hashbrown::HashMap;

let mut map: HashMap<&str, u32> = HashMap::new();
assert_eq!(map.rustc_entry("poneyland").key(), &"poneyland");

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

Take ownership of the key.

Examples

use hashbrown::HashMap;
use hashbrown::hash_map::RustcEntry;

let mut map: HashMap<&str, u32> = HashMap::new();

if let RustcEntry::Vacant(v) = map.rustc_entry("poneyland") {
    v.into_key();
}

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

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

Examples

use hashbrown::HashMap;
use hashbrown::hash_map::RustcEntry;

let mut map: HashMap<&str, u32> = HashMap::new();

if let RustcEntry::Vacant(o) = map.rustc_entry("poneyland") {
    o.insert(37);
}
assert_eq!(map["poneyland"], 37);

pub fn insert_entry(self, value: V) -> RustcOccupiedEntry<'a, K, V>[src]

Sets the value of the entry with the RustcVacantEntry's key, and returns a RustcOccupiedEntry.

Examples

use hashbrown::HashMap;
use hashbrown::hash_map::RustcEntry;

let mut map: HashMap<&str, u32> = HashMap::new();

if let RustcEntry::Vacant(v) = map.rustc_entry("poneyland") {
    let o = v.insert_entry(37);
    assert_eq!(o.get(), &37);
}

Trait Implementations

impl<K: Debug, V, '_> Debug for RustcVacantEntry<'_, K, V>[src]

Auto Trait Implementations

impl<'a, K, V> Send for RustcVacantEntry<'a, K, V> where
    K: Send,
    V: Send

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

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

Blanket Implementations

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

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

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

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

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

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.

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.