Struct std::collections::hash_map::OccupiedError

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pub struct OccupiedError<'a, K: 'a, V: 'a> {
    pub entry: OccupiedEntry<'a, K, V>,
    pub value: V,
}

🔬This is a nightly-only experimental API. (map_try_insert #82766)

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>

🔬This is a nightly-only experimental API. (map_try_insert #82766)

The entry in the map that was already occupied.

value: V

🔬This is a nightly-only experimental API. (map_try_insert #82766)

The value which was not inserted, because the entry was already occupied.

Trait Implementations

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impl<K: Debug, V: Debug> Debug for OccupiedError<'_, K, V>

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

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impl<'a, K: Debug, V: Debug> Display for OccupiedError<'a, K, V>

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

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impl<'a, K: Debug, V: Debug> Error for OccupiedError<'a, K, V>

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fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn source(&self) -> Option<&(dyn Error + 'static)>

The lower-level source of this error, if any. Read more

1.0.0 · source

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

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fn provide<'a>(&'a self, demand: &mut Demand<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access #99301)

Provides type based access to context intended for error reports. Read more

Auto Trait Implementations

impl<'a, K, V> RefUnwindSafe for OccupiedError<'a, K, V>where
K: RefUnwindSafe,
V: RefUnwindSafe,

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

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

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

impl<'a, K, V> !UnwindSafe for OccupiedError<'a, K, V>

Blanket Implementations

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impl<T> Any for Twhere
T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for Twhere
T: ?Sized,

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for Twhere
T: ?Sized,

const: unstable · source

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into for Twhere
U: From<T>,

const: unstable · source

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<E> Provider for Ewhere
E: Error + ?Sized,

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fn provide<'a>(&'a self, demand: &mut Demand<'a>)

🔬This is a nightly-only experimental API. (provide_any #96024)

Data providers should implement this method to provide all values they are able to provide by using demand. Read more

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impl<T> ToString for Twhere
T: Display + ?Sized,

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default fn to_string(&self) -> String

Converts the given value to a String. Read more

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impl<T, U> TryFrom for Twhere
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for Twhere
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

Struct std::collections::hash_map::OccupiedError

Fields

Trait Implementations

impl<K: Debug, V: Debug> Debug for OccupiedError<'_, K, V>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

impl<'a, K: Debug, V: Debug> Display for OccupiedError<'a, K, V>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

impl<'a, K: Debug, V: Debug> Error for OccupiedError<'a, K, V>

fn description(&self) -> &str

fn source(&self) -> Option<&(dyn Error + 'static)>

fn cause(&self) -> Option<&dyn Error>

fn provide<'a>(&'a self, demand: &mut Demand<'a>)

Auto Trait Implementations

impl<'a, K, V> RefUnwindSafe for OccupiedError<'a, K, V>where
K: RefUnwindSafe,
V: RefUnwindSafe,

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

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

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

impl<'a, K, V> !UnwindSafe for OccupiedError<'a, K, V>

Blanket Implementations

impl<T> Any for Twhere
T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for Twhere
T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for Twhere
T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<T> From<T> for T

fn from(t: T) -> T

impl<T, U> Into<U> for Twhere
U: From<T>,

fn into(self) -> U

impl<E> Provider for Ewhere
E: Error + ?Sized,

fn provide<'a>(&'a self, demand: &mut Demand<'a>)

impl<T> ToString for Twhere
T: Display + ?Sized,

default fn to_string(&self) -> String

impl<T, U> TryFrom<U> for Twhere
U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for Twhere
U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Struct std::collections::hash_map::OccupiedError

Fields

Trait Implementations

impl<K: Debug, V: Debug> Debug for OccupiedError<'_, K, V>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

impl<'a, K: Debug, V: Debug> Display for OccupiedError<'a, K, V>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

impl<'a, K: Debug, V: Debug> Error for OccupiedError<'a, K, V>

fn description(&self) -> &str

fn source(&self) -> Option<&(dyn Error + 'static)>

fn cause(&self) -> Option<&dyn Error>

fn provide<'a>(&'a self, demand: &mut Demand<'a>)

Auto Trait Implementations

impl<'a, K, V> RefUnwindSafe for OccupiedError<'a, K, V>where K: RefUnwindSafe, V: RefUnwindSafe,

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

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

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

impl<'a, K, V> !UnwindSafe for OccupiedError<'a, K, V>

Blanket Implementations

impl<T> Any for Twhere T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for Twhere T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for Twhere T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<T> From<T> for T

fn from(t: T) -> T

impl<T, U> Into<U> for Twhere U: From<T>,

fn into(self) -> U

impl<E> Provider for Ewhere E: Error + ?Sized,

fn provide<'a>(&'a self, demand: &mut Demand<'a>)

impl<T> ToString for Twhere T: Display + ?Sized,

default fn to_string(&self) -> String

impl<T, U> TryFrom<U> for Twhere U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<'a, K, V> RefUnwindSafe for OccupiedError<'a, K, V>where
K: RefUnwindSafe,
V: RefUnwindSafe,

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

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

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

impl<T> Any for Twhere
T: 'static + ?Sized,

impl<T> Borrow<T> for Twhere
T: ?Sized,

impl<T> BorrowMut<T> for Twhere
T: ?Sized,

impl<T, U> Into<U> for Twhere
U: From<T>,

impl<E> Provider for Ewhere
E: Error + ?Sized,

impl<T> ToString for Twhere
T: Display + ?Sized,

impl<T, U> TryFrom<U> for Twhere
U: Into<T>,

impl<T, U> TryInto<U> for Twhere
U: TryFrom<T>,