pub struct OccupiedError<'a, K, V, A = Global>{
pub entry: OccupiedEntry<'a, K, V, A>,
pub value: V,
}
🔬This is a nightly-only experimental API. (
map_try_insert
)Expand description
The error returned by try_insert
when the key already exists.
Contains the occupied entry, and the value that was not inserted.
Fields§
§entry: OccupiedEntry<'a, K, V, A>
🔬This is a nightly-only experimental API. (
map_try_insert
)The entry in the map that was already occupied.
value: V
🔬This is a nightly-only experimental API. (
map_try_insert
)The value which was not inserted, because the entry was already occupied.
Trait Implementations§
Source§impl<K, V, A> Debug for OccupiedError<'_, K, V, A>
impl<K, V, A> Debug for OccupiedError<'_, K, V, A>
Source§impl<'a, K, V, A> Display for OccupiedError<'a, K, V, A>
impl<'a, K, V, A> Display for OccupiedError<'a, K, V, A>
Source§impl<'a, K, V> Error for OccupiedError<'a, K, V>
impl<'a, K, V> Error for OccupiedError<'a, K, V>
Source§fn description(&self) -> &str
fn description(&self) -> &str
👎Deprecated since 1.42.0: use the Display impl or to_string()
1.30.0 · Source§fn source(&self) -> Option<&(dyn Error + 'static)>
fn source(&self) -> Option<&(dyn Error + 'static)>
Returns the lower-level source of this error, if any. Read more
Auto Trait Implementations§
impl<'a, K, V, A> Freeze for OccupiedError<'a, K, V, A>
impl<'a, K, V, A> RefUnwindSafe for OccupiedError<'a, K, V, A>
impl<'a, K, V, A> Send for OccupiedError<'a, K, V, A>
impl<'a, K, V, A> Sync for OccupiedError<'a, K, V, A>
impl<'a, K, V, A> Unpin for OccupiedError<'a, K, V, A>
impl<'a, K, V, A = Global> !UnwindSafe for OccupiedError<'a, K, V, A>
Blanket Implementations§
Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§impl<T, U> ContextualTryInto<U> for Twhere
U: ContextualTryFrom<T>,
impl<T, U> ContextualTryInto<U> for Twhere
U: ContextualTryFrom<T>,
type Error = <U as ContextualTryFrom<T>>::Error
type Context = <U as ContextualTryFrom<T>>::Context
fn contextual_try_into( self, context: &<U as ContextualTryFrom<T>>::Context, ) -> Result<U, <U as ContextualTryFrom<T>>::Error>
Source§impl<T> Downcast for Twhere
T: Any,
impl<T> Downcast for Twhere
T: Any,
Source§fn into_any(self: Box<T>) -> Box<dyn Any>
fn into_any(self: Box<T>) -> Box<dyn Any>
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
.Source§fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>
fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>
Convert
Rc<Trait>
(where Trait: Downcast
) to Rc<Any>
. Rc<Any>
can then be
further downcast
into Rc<ConcreteType>
where ConcreteType
implements Trait
.Source§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.Source§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.Source§impl<T> DowncastSync for T
impl<T> DowncastSync for T
Source§impl<T> IntoEither for T
impl<T> IntoEither for T
Source§fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ
fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ
Converts
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moreSource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
Converts
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read more