Enum InvalidGraphMorphism

pub enum InvalidGraphMorphism<V, E> {
    Vertex(V),
    Edge(E),
    Src(E),
    Tgt(E),
}

A failure of a mapping between graphs to define a graph homomorphism.

Variants

Vertex(V)

A vertex in the domain graph not mapped to a vertex in the codomain.

Edge(E)

An edge in the domain graph not mapped to an edge in the codomain.

Src(E)

An edge in the domain graph whose source is not preserved.

Tgt(E)

An edge in the domain graph whose target is not preserved.

Trait Implementations

impl<V: Debug, E: Debug> Debug for InvalidGraphMorphism<V, E>

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

Formats the value using the given formatter.

impl<V, E> Display for InvalidGraphMorphism<V, E>

where V: Display, E: Display,

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

Formats the value using the given formatter.

impl<V, E> Error for InvalidGraphMorphism<V, E>

where Self: Debug + Display,

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.