Struct Predicate 

pub struct Predicate {
    pub name: String,
    pub args: Vec<Term>,
}

A logical predicate

Fields

name: String

Predicate name

args: Vec<Term>

Arguments

Implementations

impl Predicate

pub fn new(name: String, args: Vec<Term>) -> Predicate

Create a new predicate

pub fn arity(&self) -> usize

Get the arity (number of arguments)

pub fn is_ground(&self) -> bool

Check if predicate is ground

pub fn variables(&self) -> Vec<String>

Collect all variables

Trait Implementations

impl Clone for Predicate

fn clone(&self) -> Predicate

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Predicate

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Predicate

fn deserialize<__D>( __deserializer: __D, ) -> Result<Predicate, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for Predicate

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

Formats the value using the given formatter.

impl PartialEq for Predicate

fn eq(&self, other: &Predicate) -> 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 Serialize for Predicate

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for Predicate

impl StructuralPartialEq for Predicate