Enum AttrsViewError 

pub enum AttrsViewError {
    MissingKey {
        key: &'static str,
    },
    InvariantViolation {
        label: &'static str,
        detail: String,
    },
}

Error from decoding an Attrs bag into a typed view.

Variants

MissingKey

A required key was absent (and has no default).

Fields

key: &'static str

The attr key that was absent.

InvariantViolation

A cross-field coherence check failed.

Fields

label: &'static str

Invariant label (e.g. “IA-4”).

detail: String

Human-readable description of the violation.

Implementations

impl AttrsViewError

pub fn missing(key: &'static str) -> Self

Convenience constructor for a missing required key.

pub fn invariant(label: &'static str, detail: String) -> Self

Convenience constructor for an invariant violation.

Trait Implementations

impl Clone for AttrsViewError

fn clone(&self) -> AttrsViewError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AttrsViewError

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

Formats the value using the given formatter.

impl Display for AttrsViewError

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

Formats the value using the given formatter.

impl Error for AttrsViewError

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 AttrsViewError

fn eq(&self, other: &AttrsViewError) -> 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 AttrsViewError