Struct Nogood 

pub struct Nogood { /* private fields */ }

Learned nogood: the conjunction of literals cannot all hold simultaneously.

Implementations

impl Nogood

pub fn new(literals: Vec<NogoodLiteral>) -> Self

Creates a nogood from branch literals.

pub fn literals(&self) -> &[NogoodLiteral]

Returns the nogood literals.

pub fn is_satisfied_by(&self, assignment: &[(VariableId, i32)]) -> bool

Returns true when every literal matches assignment.

pub fn would_be_satisfied_by( &self, assignment: &[(VariableId, i32)], var: VariableId, value: i32, ) -> bool

Returns true when extending assignment with (var, value) satisfies every literal.

Trait Implementations

impl Clone for Nogood

fn clone(&self) -> Nogood

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Nogood

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

Formats the value using the given formatter.

impl Eq for Nogood

impl PartialEq for Nogood

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