Struct SymmetricRelation 

pub struct SymmetricRelation { /* private fields */ }

A symmetric binary relation stored as a set of unordered pairs.

Implementations

impl SymmetricRelation

pub fn new() -> Self

Creates an empty relation.

pub fn add(&mut self, a: u64, b: u64)

Adds the pair (a, b).

pub fn contains(&self, a: u64, b: u64) -> bool

Returns true if (a, b) is in the relation.

pub fn len(&self) -> usize

Returns the number of pairs.

pub fn is_empty(&self) -> bool

Returns true if empty.

Trait Implementations

impl Default for SymmetricRelation

fn default() -> Self

Returns the “default value” for a type.