Enum PersistedValueError 

pub enum PersistedValueError {
    ValueNotFound(&'static str),
    Closed,
    Internal(String),
}

Errors that can occur when working with persisted values.

Variants

ValueNotFound(&'static str)

The value has never been written.

Closed

The database was closed by StateRegistry::wipe().

Internal(String)

Any other failure. Never contains the stored value.

Trait Implementations

impl Debug for PersistedValueError

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

Formats the value using the given formatter.

impl Display for PersistedValueError

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

Formats the value using the given formatter.

impl Error for PersistedValueError

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

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

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

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

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

Provides type-based access to context intended for error reports.

impl From<DatabaseError> for PersistedValueError

fn from(e: DatabaseError) -> Self

Converts to this type from the input type.