Enum Never

pub enum Never {}

A helper type which emulates the standard never_type (!).

Trait Implementations

impl Debug for Never

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

Formats the value using the given formatter.

impl Display for Never

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

Formats the value using the given formatter.

impl Error for Never

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

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

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

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

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

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<Never> for Error

fn from(never: Never) -> Self

Converts to this type from the input type.

impl HttpError for Never

type Body = ResponseBody

fn into_response(self, _: &Request<()>) -> Response<Self::Body>

Consumes itself and creates an HTTP response from its value.