Struct fixedbitset::FixedBitSet

pub struct FixedBitSet {
    pub(crate) data: Vec<u32>,
    pub(crate) length: usize,
}

FixedBitSet is a simple fixed size set of bits that each can be enabled (1 / true) or disabled (0 / false).

The bit set has a fixed capacity in terms of enabling bits (and the capacity can grow using the grow method).

Fields

data: Vec<u32>

length: usize

length in bits

Implementations

impl FixedBitSet

pub fn with_capacity(bits: usize) -> Self

Create a new FixedBitSet with a specific number of bits, all initially clear.

pub fn grow(&mut self, bits: usize)

Grow capacity to bits, all new bits initialized to zero

pub fn len(&self) -> usize

Return the length of the FixedBitSet in bits.

pub fn contains(&self, bit: usize) -> bool

Return true if the bit is enabled in the FixedBitSet, false otherwise.

Note: bits outside the capacity are always disabled.

Note: Also available with index syntax: bitset[bit].

pub fn clear(&mut self)

Clear all bits.

pub fn insert(&mut self, bit: usize)

Enable bit.

Panics if bit is out of bounds.

pub fn put(&mut self, bit: usize) -> bool

Enable bit, and return its previous value.

Panics if bit is out of bounds.

pub fn set(&mut self, bit: usize, enabled: bool)

Panics if bit is out of bounds.

pub fn copy_bit(&mut self, from: usize, to: usize)

Copies boolean value from specified bit to the specified bit.

Panics if to is out of bounds.

pub fn count_ones<T: IndexRange>(&self, range: T) -> usize

Count the number of set bits in the given bit range.

Use .. to count the whole content of the bitset.

Panics if the range extends past the end of the bitset.

pub fn set_range<T: IndexRange>(&mut self, range: T, enabled: bool)

Sets every bit in the given range to the given state (enabled)

Use .. to toggle the whole bitset.

Panics if the range extends past the end of the bitset.

pub fn insert_range<T: IndexRange>(&mut self, range: T)

Enables every bit in the given range.

Use .. to make the whole bitset ones.

Panics if the range extends past the end of the bitset.

pub fn as_slice(&self) -> &[u32]

View the bitset as a slice of u32 blocks

pub fn as_mut_slice(&mut self) -> &mut [u32]

View the bitset as a mutable slice of u32 blocks. Writing past the bitlength in the last will cause contains to return potentially incorrect results for bits past the bitlength.

pub fn ones(&self) -> Ones<'_>

Iterates over all enabled bits.

Iterator element is the index of the 1 bit, type usize.

pub fn intersection<'a>(&'a self, other: &'a FixedBitSet) -> Intersection<'a>

Returns a lazy iterator over the intersection of two FixedBitSets

pub fn union<'a>(&'a self, other: &'a FixedBitSet) -> Union<'a>

Returns a lazy iterator over the union of two FixedBitSets.

pub fn difference<'a>(&'a self, other: &'a FixedBitSet) -> Difference<'a>

Returns a lazy iterator over the difference of two FixedBitSets. The difference of a and b is the elements of a which are not in b.

Trait Implementations

impl<'a> BitAnd for &'a FixedBitSet

type Output = FixedBitSet

The resulting type after applying the & operator.

fn bitand(self, other: &FixedBitSet) -> FixedBitSet

Performs the & operation.

impl<'a> BitOr for &'a FixedBitSet

type Output = FixedBitSet

The resulting type after applying the | operator.

fn bitor(self, other: &FixedBitSet) -> FixedBitSet

Performs the | operation.

impl Clone for FixedBitSet

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for FixedBitSet

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

Formats the value using the given formatter.

impl Default for FixedBitSet

fn default() -> FixedBitSet

Returns the “default value” for a type.

impl Extend<usize> for FixedBitSet

Sets the bit at index i to true for each item i in the input src.

fn extend<I: IntoIterator<Item = usize>>(&mut self, src: I)

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 FromIterator<usize> for FixedBitSet

Return a FixedBitSet containing bits set to true for every bit index in the iterator, other bits are set to false.

fn from_iter<I: IntoIterator<Item = usize>>(src: I) -> Self

Creates a value from an iterator.

impl Hash for FixedBitSet

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 Index<usize> for FixedBitSet

Return true if the bit is enabled in the bitset, or false otherwise.

Note: bits outside the capacity are always disabled, and thus indexing a FixedBitSet will not panic.

type Output = bool

The returned type after indexing.

fn index(&self, bit: usize) -> &bool

Performs the indexing (container[index]) operation.

impl Ord for FixedBitSet

fn cmp(&self, other: &FixedBitSet) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized + PartialOrd,

Restrict a value to a certain interval.

impl PartialEq for FixedBitSet

fn eq(&self, other: &FixedBitSet) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for FixedBitSet

fn partial_cmp(&self, other: &FixedBitSet) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl Eq for FixedBitSet

impl StructuralPartialEq for FixedBitSet