Struct otter_nodejs_tests::otter_support::crates::slotmap::secondary::OccupiedEntry
source · [−]pub struct OccupiedEntry<'a, K, V> where
K: Key, { /* private fields */ }
Expand description
A view into a occupied entry in a SecondaryMap
. It is part of the
Entry
enum.
Implementations
sourceimpl<'a, K, V> OccupiedEntry<'a, K, V> where
K: Key,
impl<'a, K, V> OccupiedEntry<'a, K, V> where
K: Key,
sourcepub fn key(&self) -> K
pub fn key(&self) -> K
Returns this entry’s key.
Examples
let mut sm = SlotMap::new();
let mut sec = SecondaryMap::new();
let k = sm.insert(1);
sec.insert(k, 10);
assert_eq!(sec.entry(k).unwrap().key(), k);
sourcepub fn remove_entry(self) -> (K, V)
pub fn remove_entry(self) -> (K, V)
Removes the entry from the slot map and returns the key and value.
Examples
let mut sm = SlotMap::new();
let mut sec = SecondaryMap::new();
let foo = sm.insert("foo");
sec.entry(foo).unwrap().or_insert("bar");
if let Some(Entry::Occupied(o)) = sec.entry(foo) {
assert_eq!(o.remove_entry(), (foo, "bar"));
}
assert_eq!(sec.contains_key(foo), false);
sourcepub fn get(&self) -> &V
pub fn get(&self) -> &V
Gets a reference to the value in the entry.
Examples
let mut sm = SlotMap::new();
let mut sec = SecondaryMap::new();
let k = sm.insert(1);
sec.insert(k, 10);
if let Entry::Occupied(o) = sec.entry(k).unwrap() {
assert_eq!(*o.get(), 10);
}
sourcepub fn get_mut(&mut self) -> &mut V
pub fn get_mut(&mut self) -> &mut V
Gets a mutable reference to the value in the entry.
If you need a reference to the OccupiedEntry
which may outlive the
destruction of the Entry
value, see into_mut
.
Examples
let mut sm = SlotMap::new();
let mut sec = SecondaryMap::new();
let k = sm.insert(1);
sec.insert(k, 10);
if let Entry::Occupied(mut o) = sec.entry(k).unwrap() {
*o.get_mut() = 20;
}
assert_eq!(sec[k], 20);
sourcepub fn into_mut(self) -> &'a mut V
pub fn into_mut(self) -> &'a mut V
Converts the OccupiedEntry
into a mutable reference to the value in
the entry with a lifetime bound to the map itself.
If you need multiple references to the OccupiedEntry
, see
get_mut
.
Examples
let mut sm = SlotMap::new();
let mut sec = SecondaryMap::new();
let k = sm.insert(0);
sec.insert(k, 0);
let r;
if let Entry::Occupied(o) = sec.entry(k).unwrap() {
r = o.into_mut(); // v outlives the entry.
} else {
r = sm.get_mut(k).unwrap();
}
*r = 1;
assert_eq!((sm[k], sec[k]), (0, 1));
sourcepub fn insert(&mut self, value: V) -> V
pub fn insert(&mut self, value: V) -> V
Sets the value of the entry, and returns the entry’s old value.
Examples
let mut sm = SlotMap::new();
let mut sec = SecondaryMap::new();
let k = sm.insert(1);
sec.insert(k, 10);
if let Entry::Occupied(mut o) = sec.entry(k).unwrap() {
let v = o.insert(20);
assert_eq!(v, 10);
assert_eq!(*o.get(), 20);
}
sourcepub fn remove(self) -> V
pub fn remove(self) -> V
Takes the value out of the entry, and returns it.
Examples
let mut sm = SlotMap::new();
let mut sec = SecondaryMap::new();
let k = sm.insert(1);
sec.insert(k, 10);
if let Entry::Occupied(mut o) = sec.entry(k).unwrap() {
assert_eq!(o.remove(), 10);
assert_eq!(sec.contains_key(k), false);
}
Trait Implementations
Auto Trait Implementations
impl<'a, K, V> RefUnwindSafe for OccupiedEntry<'a, K, V> where
V: RefUnwindSafe,
impl<'a, K, V> Send for OccupiedEntry<'a, K, V> where
V: Send,
impl<'a, K, V> Sync for OccupiedEntry<'a, K, V> where
V: Sync,
impl<'a, K, V> Unpin for OccupiedEntry<'a, K, V>
impl<'a, K, V> !UnwindSafe for OccupiedEntry<'a, K, V>
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
impl<T> Downcast for T where
T: Any,
impl<T> Downcast for T where
T: Any,
fn into_any(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>ⓘNotable traits for Box<W, Global>impl<W> Write for Box<W, Global> where
W: Write + ?Sized, impl<R> Read for Box<R, Global> where
R: Read + ?Sized, impl<F, A> Future for Box<F, A> where
F: Future + Unpin + ?Sized,
A: Allocator + 'static, type Output = <F as Future>::Output;impl<I, A> Iterator for Box<I, A> where
I: Iterator + ?Sized,
A: Allocator, type Item = <I as Iterator>::Item;
fn into_any(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>ⓘNotable traits for Box<W, Global>impl<W> Write for Box<W, Global> where
W: Write + ?Sized, impl<R> Read for Box<R, Global> where
R: Read + ?Sized, impl<F, A> Future for Box<F, A> where
F: Future + Unpin + ?Sized,
A: Allocator + 'static, type Output = <F as Future>::Output;impl<I, A> Iterator for Box<I, A> where
I: Iterator + ?Sized,
A: Allocator, type Item = <I as Iterator>::Item;
W: Write + ?Sized, impl<R> Read for Box<R, Global> where
R: Read + ?Sized, impl<F, A> Future for Box<F, A> where
F: Future + Unpin + ?Sized,
A: Allocator + 'static, type Output = <F as Future>::Output;impl<I, A> Iterator for Box<I, A> where
I: Iterator + ?Sized,
A: Allocator, type Item = <I as Iterator>::Item;
Convert Box<dyn Trait>
(where Trait: Downcast
) to Box<dyn Any>
. Box<dyn Any>
can
then be further downcast
into Box<ConcreteType>
where ConcreteType
implements Trait
. Read more
fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>
fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>
Convert Rc<Trait>
(where Trait: Downcast
) to Rc<Any>
. Rc<Any>
can then be
further downcast
into Rc<ConcreteType>
where ConcreteType
implements Trait
. Read more
fn as_any(&self) -> &(dyn Any + 'static)
fn as_any(&self) -> &(dyn Any + 'static)
Convert &Trait
(where Trait: Downcast
) to &Any
. This is needed since Rust cannot
generate &Any
’s vtable from &Trait
’s. Read more
fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
Convert &mut Trait
(where Trait: Downcast
) to &Any
. This is needed since Rust cannot
generate &mut Any
’s vtable from &mut Trait
’s. Read more
impl<A> DynCastExt for A
impl<A> DynCastExt for A
fn dyn_cast<T>(
self
) -> Result<<A as DynCastExtHelper<T>>::Target, <A as DynCastExtHelper<T>>::Source> where
A: DynCastExtHelper<T>,
T: ?Sized,
fn dyn_cast<T>(
self
) -> Result<<A as DynCastExtHelper<T>>::Target, <A as DynCastExtHelper<T>>::Source> where
A: DynCastExtHelper<T>,
T: ?Sized,
Use this to cast from one trait object type to another. Read more
fn dyn_upcast<T>(self) -> <A as DynCastExtAdvHelper<T, T>>::Target where
A: DynCastExtAdvHelper<T, T, Source = <A as DynCastExtAdvHelper<T, T>>::Target>,
T: ?Sized,
fn dyn_upcast<T>(self) -> <A as DynCastExtAdvHelper<T, T>>::Target where
A: DynCastExtAdvHelper<T, T, Source = <A as DynCastExtAdvHelper<T, T>>::Target>,
T: ?Sized,
Use this to upcast a trait to one of its supertraits. Read more
fn dyn_cast_adv<F, T>(
self
) -> Result<<A as DynCastExtAdvHelper<F, T>>::Target, <A as DynCastExtAdvHelper<F, T>>::Source> where
A: DynCastExtAdvHelper<F, T>,
F: ?Sized,
T: ?Sized,
fn dyn_cast_adv<F, T>(
self
) -> Result<<A as DynCastExtAdvHelper<F, T>>::Target, <A as DynCastExtAdvHelper<F, T>>::Source> where
A: DynCastExtAdvHelper<F, T>,
F: ?Sized,
T: ?Sized,
fn dyn_cast_with_config<C>(
self
) -> Result<<A as DynCastExtAdvHelper<<C as DynCastConfig>::Source, <C as DynCastConfig>::Target>>::Target, <A as DynCastExtAdvHelper<<C as DynCastConfig>::Source, <C as DynCastConfig>::Target>>::Source> where
C: DynCastConfig,
A: DynCastExtAdvHelper<<C as DynCastConfig>::Source, <C as DynCastConfig>::Target>,
fn dyn_cast_with_config<C>(
self
) -> Result<<A as DynCastExtAdvHelper<<C as DynCastConfig>::Source, <C as DynCastConfig>::Target>>::Target, <A as DynCastExtAdvHelper<<C as DynCastConfig>::Source, <C as DynCastConfig>::Target>>::Source> where
C: DynCastConfig,
A: DynCastExtAdvHelper<<C as DynCastConfig>::Source, <C as DynCastConfig>::Target>,
Use this to cast from one trait object type to another. With this method the type parameter is a config type that uniquely specifies which cast should be preformed. Read more
sourceimpl<T> Instrument for T
impl<T> Instrument for T
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sourcefn in_current_span(self) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>impl<T> Future for Instrumented<T> where
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T: Future, type Output = <T as Future>::Output;
impl<V, T> VZip<V> for T where
V: MultiLane<T>,
impl<V, T> VZip<V> for T where
V: MultiLane<T>,
fn vzip(self) -> V
sourceimpl<T> WithSubscriber for T
impl<T> WithSubscriber for T
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S: Into<Dispatch>,
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S: Into<Dispatch>,
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WithDispatch
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T: Future, type Output = <T as Future>::Output;
T: Future, type Output = <T as Future>::Output;
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WithDispatch
wrapper. Read more