Struct slotmap::secondary::VacantEntry [−][src]
pub struct VacantEntry<'a, K: Key, V> { /* fields omitted */ }
Expand description
A view into a vacant entry in a SecondaryMap
. It is part of the
Entry
enum.
Implementations
Gets the key that would be used when inserting a value through the
VacantEntry
.
Examples
let mut sm = SlotMap::new(); let mut sec: SecondaryMap<_, ()> = SecondaryMap::new(); let k = sm.insert(1); if let Entry::Vacant(v) = sec.entry(k).unwrap() { assert_eq!(v.key(), k); }
Sets the value of the entry with the VacantEntry
’s key, and returns
a mutable reference to it.
Examples
let mut sm = SlotMap::new(); let mut sec = SecondaryMap::new(); let k = sm.insert(1); if let Entry::Vacant(v) = sec.entry(k).unwrap() { let new_val = v.insert(3); assert_eq!(new_val, &mut 3); }
Trait Implementations
Auto Trait Implementations
impl<'a, K, V> RefUnwindSafe for VacantEntry<'a, K, V> where
V: RefUnwindSafe,
impl<'a, K, V> Send for VacantEntry<'a, K, V> where
V: Send,
impl<'a, K, V> Sync for VacantEntry<'a, K, V> where
V: Sync,
impl<'a, K, V> Unpin for VacantEntry<'a, K, V>
impl<'a, K, V> !UnwindSafe for VacantEntry<'a, K, V>