Struct BiMap 

pub struct BiMap<A: Hash + Eq + Clone, B: Hash + Eq + Clone> { /* private fields */ }

A bidirectional map between two types.

Implementations

impl<A: Hash + Eq + Clone, B: Hash + Eq + Clone> BiMap<A, B>

pub fn new() -> Self

Creates an empty bidirectional map.

pub fn insert(&mut self, a: A, b: B)

Inserts a pair (a, b).

pub fn get_b(&self, a: &A) -> Option<&B>

Looks up b for a given a.

pub fn get_a(&self, b: &B) -> Option<&A>

Looks up a for a given b.

pub fn len(&self) -> usize

Returns the number of pairs.

pub fn is_empty(&self) -> bool

Returns true if empty.

Trait Implementations

impl<A, B> Default for BiMap<A, B>

where A: Hash + Eq + Clone, B: Hash + Eq + Clone,

fn default() -> Self

Returns the “default value” for a type.