Struct graph_types::GraphError

pub struct GraphError { /* private fields */ }

The error type of a graph operation, see GraphErrorKind for more.

Size

The size of this struct is always 8 bytes.

use graph_theory::GraphError;
assert_eq!(std::mem::size_of::<GraphError>(), 8);

Examples

use graph_theory::GraphError;
GraphError::node_not_found(0); // node id 0 not found
GraphError::edge_out_of_range(0, 5); // edge id 0 out of range (max 5)
GraphError::custom("user angry"); // user is angry now

Implementations

impl GraphError

pub fn custom<S>(message: S) -> Selfwhere S: ToString,

Some index is not found in storage.

Examples

• edge id 0 out of range

use graph_theory::{GraphError, Query};
GraphError::not_found(Query::edge(0));
GraphError::edge_not_found(0);

pub fn not_found<Q: Into<Query>>(query: Q) -> Self

Some index is not found in storage.

Examples

• edge id 0 out of range

use graph_theory::{GraphError, Query};
GraphError::not_found(Query::edge(0));
GraphError::edge_not_found(0);

pub fn with_io_path<P>(self, path: P) -> Selfwhere P: AsRef<Path>,

Fill where the io error occurred.

Examples

• edge id 0 out of range

use graph_theory::{GraphError, Query};
GraphError::not_found(Query::edge(0));
GraphError::edge_not_found(0);

pub fn node_out_of_range(index: usize, max: usize) -> Self

Some index is not found in storage.

Examples

• edge id 0 out of range

use graph_theory::{GraphError, Query};
GraphError::not_found(Query::edge(0));
GraphError::edge_not_found(0);

pub fn edge_out_of_range(index: usize, max: usize) -> Self

Some index is not found in storage.

Examples

• edge id 0 out of range

use graph_theory::{GraphError, Query};
GraphError::not_found(Query::edge(0));

Trait Implementations

impl Debug for GraphError

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

Formats the value using the given formatter.

impl Display for GraphError

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

Formats the value using the given formatter.

impl Error for GraphError

fn source(&self) -> Option<&(dyn Error + 'static)>

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, demand: &mut Demand<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type based access to context intended for error reports.