Struct BitPage

pub(crate) struct BitPage {
    storage: [u64; 8],
    length: u32,
}

A fixed size (512 bits wide) page of bits that records integer set membership from [0, 511].

Fields

storage: [u64; 8]

length: u32

Implementations

impl BitPage

pub(crate) fn new_zeroes() -> Self

Create a new page with no bits set.

pub(crate) fn recompute_length(&mut self)

pub(crate) fn len(&self) -> u32

Returns the number of members in this page.

pub(crate) fn is_empty(&self) -> bool

Returns true if this page has no members.

pub(crate) fn iter(&self) -> impl DoubleEndedIterator<Item = u32> + '_

Iterator over the members of this page.

pub(crate) fn iter_from( &self, value: u32, ) -> impl DoubleEndedIterator<Item = u32> + '_

Iterator over the members of this page starting from value.

So value is included in the iterator if it’s in the page.

pub(crate) fn iter_ranges(&self) -> RangeIter<'_>

Iterator over the ranges in this page.

pub(crate) fn insert(&mut self, val: u32) -> bool

Marks (val % page width) a member of this set and returns true if it is newly added.

pub(crate) fn insert_range(&mut self, first: u32, last: u32)

Marks all values [first, last] as members of this set.

pub(crate) fn remove_range(&mut self, first: u32, last: u32)

Marks all values [first, last] as not members of this set.

pub(crate) fn clear(&mut self)

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

Removes (val % page width) from this set.

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

Return true if (val % page width) is a member of this set.

pub(crate) fn union(a: &BitPage, b: &BitPage) -> BitPage

pub(crate) fn intersect(a: &BitPage, b: &BitPage) -> BitPage

pub(crate) fn subtract(a: &BitPage, b: &BitPage) -> BitPage

fn process<Op>(&self, other: &BitPage, op: Op) -> BitPage

where Op: Fn(u64, u64) -> u64,

fn element(&self, value: u32) -> &u64

fn element_mut(&mut self, value: u32) -> &mut u64

const fn element_index(value: u32) -> usize

Trait Implementations

impl Clone for BitPage

fn clone(&self) -> BitPage

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BitPage

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

Formats the value using the given formatter.

impl Default for BitPage

fn default() -> Self

Returns the “default value” for a type.

impl Hash for BitPage

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for BitPage

fn eq(&self, other: &Self) -> 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 BitPage