Enum UndoError 

pub enum UndoError {
    StackEmpty,
    Io(Error),
}

Errors specific to undo operations.

Variants

StackEmpty

The undo stack is empty; nothing to restore.

Io(Error)

An I/O error occurred during snapshot or restore.

Trait Implementations

impl Debug for UndoError

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

Formats the value using the given formatter.

impl Display for UndoError

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

Formats the value using the given formatter.

impl Error for UndoError

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<Error> for UndoError

fn from(source: Error) -> UndoError

Converts to this type from the input type.