Enum NicheValueError 

pub enum NicheValueError {
    Overflow(Option<Sign>),
    InvalidValue,
}

🚩+ Invalid or problematic values for niche types.

---

^{📍 num}

---

Variants

Overflow(Option<Sign>)

⅀ 🚩 An arithmetic overflow error, with an optional associated sign.

InvalidValue

🚩 An invalid value was received for the given type or operation.

Implementations

impl NicheValueError

pub const fn from_overflow(_f: Overflow) -> NicheValueError

const method equivalent to From<Overflow> for NicheValueError.

impl NicheValueError

pub const fn from_invalid_value(_f: InvalidValue) -> NicheValueError

const method equivalent to From<InvalidValue> for NicheValueError.

Trait Implementations

impl Clone for NicheValueError

fn clone(&self) -> NicheValueError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for NicheValueError

impl Debug for NicheValueError

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

Formats the value using the given formatter.

impl Display for NicheValueError

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

Formats the value using the given formatter.

impl Eq for NicheValueError

impl Error for NicheValueError

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<InvalidValue> for NicheValueError

fn from(_f: InvalidValue) -> NicheValueError

Converts to this type from the input type.

impl From<Overflow> for NicheValueError

fn from(_f: Overflow) -> NicheValueError

Converts to this type from the input type.

impl Hash for NicheValueError

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for NicheValueError

fn eq(&self, other: &NicheValueError) -> 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 StructuralPartialEq for NicheValueError

impl TryFrom<NicheValueError> for Overflow

type Error = FailedErrorConversion

The type returned in the event of a conversion error.

fn try_from(_f: NicheValueError) -> Result<Overflow, Self::Error>

Performs the conversion.

impl TryFrom<NicheValueError> for InvalidValue

type Error = FailedErrorConversion

The type returned in the event of a conversion error.

fn try_from(_f: NicheValueError) -> Result<InvalidValue, Self::Error>

Performs the conversion.