Enum EdgeMark 

pub enum EdgeMark {
    Tail,
    Arrow,
    Circle,
}

Marks on the endpoint of an edge in a mixed graph.

Used by constraint-based causal discovery algorithms (PC, FCI) to represent different types of edges in CPDAGs and PAGs:

• Tail — definite tail (non-ancestral mark, as in → tails, — tails).
• Arrow — definite arrowhead.
• Circle — unknown endpoint (used by FCI for partial ancestral graphs).

Variants

Tail

Definite tail: non-arrowhead endpoint.

Arrow

Definite arrowhead.

Circle

Unknown endpoint mark (FCI/PAG only).

Trait Implementations

impl Clone for EdgeMark

fn clone(&self) -> EdgeMark

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for EdgeMark

impl Debug for EdgeMark

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

Formats the value using the given formatter.

impl Eq for EdgeMark

impl Hash for EdgeMark

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for EdgeMark

fn eq(&self, other: &EdgeMark) -> 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 StructuralPartialEq for EdgeMark