Struct VacantError 

#[non_exhaustive]
pub struct VacantError {
    pub param: Param,
    pub vacancy: Vacancy,
    pub message: Option<String>,
}

Error caused by a Switch of SwitchAction::Error

VacantError is an error that is returned when you apply an error switch to a vacant value.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

param: Param

Parameter that caused this error

vacancy: Vacancy

State of the parameter value that caused this error

message: Option<String>

Error message specified in the switch

Implementations

impl VacantError

pub fn message_or_default(&self) -> &str

Returns the message.

If self.message is Some(_), its content is returned. Otherwise, the default message is returned.

Trait Implementations

impl Clone for VacantError

fn clone(&self) -> VacantError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for VacantError

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

Formats the value using the given formatter.

impl Display for VacantError

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

Formats the value using the given formatter.

impl Error for VacantError

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<VacantError> for ErrorCause

fn from(source: VacantError) -> Self

Converts to this type from the input type.

impl Hash for VacantError

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 VacantError

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

impl StructuralPartialEq for VacantError