Struct TaskTransitionError 

pub struct TaskTransitionError { /* private fields */ }

An illegal task lifecycle transition.

Implementations

impl TaskTransitionError

pub const fn from(self) -> TaskStatus

Return the current status.

pub const fn to(self) -> TaskStatus

Return the refused target status.

Trait Implementations

impl Clone for TaskTransitionError

fn clone(&self) -> TaskTransitionError

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for TaskTransitionError

impl Debug for TaskTransitionError

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

Formats the value using the given formatter.

impl Display for TaskTransitionError

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

Formats the value using the given formatter.

impl Eq for TaskTransitionError

impl Error for TaskTransitionError

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 PartialEq for TaskTransitionError

fn eq(&self, other: &TaskTransitionError) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for TaskTransitionError