Enum AbsentError 

pub enum AbsentError {
    Absent,
    Null,
}

Variants

Absent

Null

Implementations

impl AbsentError

pub fn field(self, name: &'static str) -> FieldAbsentError

Attaches a field name to this AbsentError, producing a FieldAbsentError suitable for user-facing diagnostics when a specific field isn’t Present.

Trait Implementations

impl Debug for AbsentError

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

Formats the value using the given formatter.

impl Display for AbsentError

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

Formats the value using the given formatter.

impl Error for AbsentError

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.