Struct MapError 

pub struct MapError { /* private fields */ }

The first callback error returned by map.

Implementations

impl MapError

pub fn index(&self) -> usize

Returns the zero-based index of the input that failed.

pub fn message(&self) -> &str

Returns the callback error message, at most 4096 bytes and truncated at a UTF-8 character boundary.

Trait Implementations

impl Debug for MapError

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

Formats the value using the given formatter.

impl Display for MapError

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

Formats the value using the given formatter.

impl Error for MapError

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<MapError> for MapInError

fn from(error: MapError) -> Self

Converts to this type from the input type.