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Struct std::collections::hash_map::OccupiedError

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)

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()
Read more
1.30.0source 
fn source(&self) -> Option<&(dyn Error + 'static)>
The lower-level source of this error, if any. Read more
1.0.0source 
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, request: &mut Request<'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 T
where
    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 T
where
    T: ?Sized,
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fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where
    T: ?Sized,
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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
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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where
    U: From<T>,
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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<T> ToString for T
where
    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<U> for T
where
    U: Into<T>,
 
type Error = Infallible
The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
Performs the conversion.
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impl<T, U> TryInto<U> for T
where
    U: TryFrom<T>,
 
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
Performs the conversion.

© 2010 The Rust Project Developers
Licensed under the Apache License, Version 2.0 or the MIT license, at your option.
https://doc.rust-lang.org/std/collections/hash_map/struct.OccupiedError.html