Enum RegionError 

pub enum RegionError {
    InvalidCombinationOperator,
    InvalidDimension,
    GrayScaleOutOfRange,
}

Errors related to region parameters.

Variants

InvalidCombinationOperator

Invalid combination operator value.

InvalidDimension

Region with invalid dimension.

GrayScaleOutOfRange

Gray-scale value exceeds pattern count.

Trait Implementations

impl Clone for RegionError

fn clone(&self) -> RegionError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RegionError

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

Formats the value using the given formatter.

impl Display for RegionError

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

Formats the value using the given formatter.

impl Error for RegionError

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<RegionError> for DecodeError

fn from(e: RegionError) -> Self

Converts to this type from the input type.

impl PartialEq for RegionError

fn eq(&self, other: &RegionError) -> 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 Copy for RegionError

impl Eq for RegionError

impl StructuralPartialEq for RegionError