Enum GraphOperationError

pub enum GraphOperationError {
    VertexAlreadyExists,
    VertexDoesNotExist,
    EdgeDoesNotExist,
}

Describes possible errors that might happen when user interacts with graph

Variants

VertexAlreadyExists

when user trying to create vertex with the same data

VertexDoesNotExist

when user trying to get/remove vertex by id and it doesn’t exist

EdgeDoesNotExist

when user trying to find edge by two vertices and it’s failed

Trait Implementations

impl Debug for GraphOperationError

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

Formats the value using the given formatter.

impl Display for GraphOperationError

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

Formats the value using the given formatter.

impl Error for GraphOperationError

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 GraphOperationError

fn eq(&self, other: &GraphOperationError) -> 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 Eq for GraphOperationError

impl StructuralPartialEq for GraphOperationError