Struct BitSet

pub struct BitSet { /* private fields */ }

A BitSet is a simple set designed to track which indices are placed into it.

Note, a BitSet is limited by design to only usize**4 indices. Adding beyond this limit will cause the BitSet to panic.

Implementations

impl BitSet

pub fn new() -> BitSet

Creates an empty BitSet.

pub fn with_capacity(max: u32) -> BitSet

Creates an empty BitSet, preallocated for up to max indices.

pub fn add(&mut self, id: u32) -> bool

Adds id to the BitSet. Returns true if the value was already in the set.

pub fn remove(&mut self, id: u32) -> bool

Removes id from the set, returns true if the value was removed, and false if the value was not set to begin with.

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

Returns true if id is in the set.

pub fn contains_set(&self, other: &BitSet) -> bool

Returns true if all ids in other are contained in this set

pub fn clear(&mut self)

Completely wipes out the bit set.

pub fn len(&self) -> usize

Return the number of elements

Trait Implementations

impl<'a, T> BitAnd<T> for &'a BitSet

where T: BitSetLike,

type Output = BitSetAnd<&'a BitSet, T>

The resulting type after applying the & operator.

fn bitand(self, rhs: T) -> Self::Output

Performs the & operation.

impl<T> BitAnd<T> for BitSet

where T: BitSetLike,

type Output = BitSetAnd<BitSet, T>

The resulting type after applying the & operator.

fn bitand(self, rhs: T) -> Self::Output

Performs the & operation.

impl<'a, T> BitOr<T> for &'a BitSet

where T: BitSetLike,

type Output = BitSetOr<&'a BitSet, T>

The resulting type after applying the | operator.

fn bitor(self, rhs: T) -> Self::Output

Performs the | operation.

impl<T> BitOr<T> for BitSet

where T: BitSetLike,

type Output = BitSetOr<BitSet, T>

The resulting type after applying the | operator.

fn bitor(self, rhs: T) -> Self::Output

Performs the | operation.

impl BitSetLike for BitSet

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.

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

Gets the usize corresponding to layer and index.

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

impl<'a, T> BitXor<T> for &'a BitSet

where T: BitSetLike,

type Output = BitSetXor<&'a BitSet, T>

The resulting type after applying the ^ operator.

fn bitxor(self, rhs: T) -> Self::Output

Performs the ^ operation.

impl<T> BitXor<T> for BitSet

where T: BitSetLike,

type Output = BitSetXor<BitSet, T>

The resulting type after applying the ^ operator.

fn bitxor(self, rhs: T) -> Self::Output

Performs the ^ operation.

impl Clone for BitSet

fn clone(&self) -> BitSet

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for BitSet

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

Formats the value using the given formatter.

impl Default for BitSet

fn default() -> BitSet

Returns the “default value” for a type.

impl DrainableBitSet for BitSet

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

Removes bit from the bit set.

fn drain<'a>(&'a mut self) -> DrainBitIter<'a, Self>

where Self: Sized,

Create a draining iterator that will scan over the keyspace and clears it while doing so.

impl<'a> Extend<&'a u32> for BitSet

fn extend<T>(&mut self, iter: T)

where T: IntoIterator<Item = &'a u32>,

Extends a collection with the contents of an iterator.

fn extend_one(&mut self, item: A)

🔬This is a nightly-only experimental API. (extend_one)

Extends a collection with exactly one element.

fn extend_reserve(&mut self, additional: usize)

🔬This is a nightly-only experimental API. (extend_one)

Reserves capacity in a collection for the given number of additional elements.

impl Extend<u32> for BitSet

fn extend<T>(&mut self, iter: T)

where T: IntoIterator<Item = u32>,

Extends a collection with the contents of an iterator.

fn extend_one(&mut self, item: A)

🔬This is a nightly-only experimental API. (extend_one)

Extends a collection with exactly one element.

fn extend_reserve(&mut self, additional: usize)

🔬This is a nightly-only experimental API. (extend_one)

Reserves capacity in a collection for the given number of additional elements.

impl<'a> FromIterator<&'a u32> for BitSet

fn from_iter<T>(iter: T) -> Self

where T: IntoIterator<Item = &'a u32>,

Creates a value from an iterator.

impl FromIterator<u32> for BitSet

fn from_iter<T>(iter: T) -> Self

where T: IntoIterator<Item = u32>,

Creates a value from an iterator.

impl<'a> IntoIterator for &'a BitSet

type Item = <BitIter<&'a BitSet> as Iterator>::Item

The type of the elements being iterated over.

type IntoIter = BitIter<&'a BitSet>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

impl IntoIterator for BitSet

type Item = <BitIter<BitSet> as Iterator>::Item

The type of the elements being iterated over.

type IntoIter = BitIter<BitSet>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

impl MallocSizeOf for BitSet

fn size_of(&self, ops: &mut MallocSizeOfOps) -> usize

Measure the heap usage of all descendant heap-allocated structures, but not the space taken up by the value itself.

impl<'a> Not for &'a BitSet

type Output = BitSetNot<&'a BitSet>

The resulting type after applying the ! operator.

fn not(self) -> Self::Output

Performs the unary ! operation.

impl Not for BitSet

type Output = BitSetNot<BitSet>

The resulting type after applying the ! operator.

fn not(self) -> Self::Output

Performs the unary ! operation.

impl PartialEq for BitSet

fn eq(&self, rhv: &BitSet) -> 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 Eq for BitSet