Struct sp_std::collections::btree_map::OccupiedError

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

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

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)

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

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

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

Formats the value using the given formatter.

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

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

Formats the value using the given formatter.

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

pub 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.

fn backtrace(&self) -> Option<&Backtrace>

🔬 This is a nightly-only experimental API. (backtrace)

Returns a stack backtrace, if available, of where this error occurred.

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

👎 Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting