Struct Atom 

pub struct Atom {
    pub predicate: PredicateSymbol,
    pub terms: Vec<Term>,
}

Datalog atom: predicate(term_1, ..., term_n).

Fields

predicate: PredicateSymbol

Predicate identifier.

terms: Vec<Term>

Ordered list of terms.

Implementations

impl Atom

pub fn arity(&self) -> usize

Arity of the atom.

Trait Implementations

impl Clone for Atom

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Atom

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

Formats the value using the given formatter.

impl Display for Atom

Display an Atom as predicate(term_1, term_2, …). Used directly by Term’s std::fmt::Display impl for non-2-arity triple terms and available to error messages / debugging.

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

Formats the value using the given formatter.

impl Eq for Atom

impl Hash for Atom

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 Atom

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Atom