Enum MapError 

pub enum MapError {
    NodeNotFound(MapNodeId),
    EdgeNotFound(MapEdgeId),
    NodeConflict(MapNodeId),
    EdgeConflict(MapEdgeId),
    InvalidStateTransition {
        node_id: MapNodeId,
        from: MapNodeState,
        to: MapNodeState,
    },
    RootAlreadyExists(MapNodeId),
    ParentNotFound(MapNodeId),
    AlreadyClosed(MapNodeId),
}

マップ操作のエラー

Variants

NodeNotFound(MapNodeId)

ノードが見つからない

EdgeNotFound(MapEdgeId)

エッジが見つからない

NodeConflict(MapNodeId)

ノード ID の衝突

EdgeConflict(MapEdgeId)

エッジ ID の衝突

InvalidStateTransition

無効な状態遷移

Fields

node_id: MapNodeId

from: MapNodeState

to: MapNodeState

RootAlreadyExists(MapNodeId)

ルートノードが既に存在

ParentNotFound(MapNodeId)

親ノードが見つからない

AlreadyClosed(MapNodeId)

ノードが既に Closed

Trait Implementations

impl Clone for MapError

fn clone(&self) -> MapError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MapError

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

Formats the value using the given formatter.

impl Display for MapError

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

Formats the value using the given formatter.

impl Error for MapError

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 MapError

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

impl StructuralPartialEq for MapError