Struct Unsupported 

pub struct Unsupported {
    pub capability: &'static str,
    pub reason: &'static str,
}

Typed error returned by a ConstructionKernel method when the kernel does not support the requested construction.

This replaces the panicking defaults of the pre-P10.4 trait. An algorithm that needs exact construction receives Err(Unsupported) and can degrade gracefully (fall back to f64, report the gap, or refuse the input) rather than crashing the process.

Zero-heap: carries only &'static str metadata (no String/Box).

Fields

capability: &'static str

The capability name (e.g. "segment_intersection_2").

reason: &'static str

Why it is unsupported (e.g. "filtered f64 kernel does not construct exact points").

Implementations

impl Unsupported

pub const fn new(capability: &'static str, reason: &'static str) -> Self

Construct an Unsupported error.

Trait Implementations

impl Clone for Unsupported

fn clone(&self) -> Unsupported

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Unsupported

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

Formats the value using the given formatter.

impl Display for Unsupported

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

Formats the value using the given formatter.

impl Error for Unsupported

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 Unsupported

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

impl Eq for Unsupported

impl StructuralPartialEq for Unsupported