Enum Premise 

pub enum Premise {
    Necessary(Literal),
    Ordinary(Literal),
}

A premise in the knowledge base.

Variants

Necessary(Literal)

Necessary premise (indefeasible): cannot be attacked.

Ordinary(Literal)

Ordinary premise (defeasible): can be attacked by undermining.

Implementations

impl Premise

pub fn literal(&self) -> &Literal

The literal content of this premise.

pub fn is_defeasible(&self) -> bool

Whether this premise can be attacked.

Trait Implementations

impl Clone for Premise

fn clone(&self) -> Premise

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Premise

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

Formats the value using the given formatter.

impl Hash for Premise

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 Premise

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

impl StructuralPartialEq for Premise