Struct UnknownVariant

pub struct UnknownVariant { /* private fields */ }

Error returned by FromStr implementations when no matching variant was found.

Indicates that the supplied string does not refer to a known key constant.

Trait Implementations

impl Debug for UnknownVariant

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

Formats the value using the given formatter.

impl Display for UnknownVariant

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

Formats the value using the given formatter.

impl Error for UnknownVariant

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<UnknownVariant> for Error

fn from(value: UnknownVariant) -> Self

Converts to this type from the input type.

impl PartialEq for UnknownVariant

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for UnknownVariant

impl StructuralPartialEq for UnknownVariant