Enum TwoPTwoPGraphError 

pub enum TwoPTwoPGraphError<Id>
where
    Id: Debug,
{
    VertexAlreadyExists(Id),
    VertexDoesNotExists(Id),
    EdgeAlreadyExists(Id),
    EdgeDoesNotExists(Id),
    VertexHasEdge(Id, Id),
    AddVertexNotDelivered(Id),
    AddEdgeNotDelivered(Id),
}

Errors that can occur when performing operations on a TwoPTwoPGraph.

Variants

VertexAlreadyExists(Id)

A vertex with the given ID has already been added.

VertexDoesNotExists(Id)

The referenced vertex does not exist in V_A \ V_R.

EdgeAlreadyExists(Id)

An edge with the given ID has already been added.

EdgeDoesNotExists(Id)

The referenced edge does not exist in E_A \ E_R.

VertexHasEdge(Id, Id)

Cannot remove the vertex because it still has an active (non-removed) edge.

AddVertexNotDelivered(Id)

Downstream precondition failure: the corresponding addVertex has not been delivered yet.

AddEdgeNotDelivered(Id)

Downstream precondition failure: the corresponding addEdge has not been delivered yet.

Trait Implementations

impl<Id> Debug for TwoPTwoPGraphError<Id>

where Id: Debug + Debug,

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

Formats the value using the given formatter.

impl<Id> Display for TwoPTwoPGraphError<Id>

where Id: Debug + Display,

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

Formats the value using the given formatter.

impl<Id> Error for TwoPTwoPGraphError<Id>

where Id: Debug, 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.