Trait hibitset::BitSetLike

pub trait BitSetLike {
    // Required methods
    fn layer3(&self) -> usize;
    fn layer2(&self, i: usize) -> usize;
    fn layer1(&self, i: usize) -> usize;
    fn layer0(&self, i: usize) -> usize;
    fn contains(&self, i: u32) -> bool;

    // Provided methods
    fn get_from_layer(&self, layer: usize, idx: usize) -> usize { ... }
    fn is_empty(&self) -> bool { ... }
    fn iter(self) -> BitIter<Self> 
       where Self: Sized { ... }
    fn par_iter(self) -> BitParIter<Self>
       where Self: Sized { ... }
}

A generic interface for BitSetLike-like types.

Every BitSetLike is hierarchical, meaning that there are multiple levels that branch out in a tree like structure.

Layer0 each bit represents one Index of the set Layer1 each bit represents one usize of Layer0, and will be set only if the word below it is not zero. Layer2 has the same arrangement but with Layer1, and Layer3 with Layer2.

This arrangement allows for rapid jumps across the key-space.

Required Methods

fn layer3(&self) -> usize

Return a usize where each bit represents if any word in layer2 has been set.

fn layer2(&self, i: usize) -> usize

Return the usize from the array of usizes that indicates if any bit has been set in layer1

fn layer1(&self, i: usize) -> usize

Return the usize from the array of usizes that indicates if any bit has been set in layer0

fn layer0(&self, i: usize) -> usize

Return a usize that maps to the direct 1:1 association with each index of the set

fn contains(&self, i: u32) -> bool

Allows checking if set bit is contained in the bit set.

Provided Methods

fn get_from_layer(&self, layer: usize, idx: usize) -> usize

Gets the usize corresponding to layer and index.

The layer should be in the range [0, 3]

fn is_empty(&self) -> bool

Returns true if this BitSetLike contains nothing, and false otherwise.

fn iter(self) -> BitIter<Self> where Self: Sized,

Create an iterator that will scan over the keyspace

fn par_iter(self) -> BitParIter<Self>where Self: Sized,

Create a parallel iterator that will scan over the keyspace

Implementations on Foreign Types

impl<'a, T> BitSetLike for &'a mut Twhere T: BitSetLike + ?Sized,

fn layer3(&self) -> usize

fn layer2(&self, i: usize) -> usize

fn layer1(&self, i: usize) -> usize

fn layer0(&self, i: usize) -> usize

fn contains(&self, i: u32) -> bool

impl<'a, T> BitSetLike for &'a Twhere T: BitSetLike + ?Sized,

fn layer3(&self) -> usize

fn layer2(&self, i: usize) -> usize

fn layer1(&self, i: usize) -> usize

fn layer0(&self, i: usize) -> usize

fn contains(&self, i: u32) -> bool

Implementors

impl BitSetLike for AtomicBitSet

impl BitSetLike for BitSet

impl BitSetLike for BitSetAll

impl<A: BitSetLike> BitSetLike for BitSetNot<A>

impl<A: BitSetLike, B: BitSetLike> BitSetLike for BitSetAnd<A, B>

impl<A: BitSetLike, B: BitSetLike> BitSetLike for BitSetOr<A, B>

impl<A: BitSetLike, B: BitSetLike> BitSetLike for BitSetXor<A, B>