Struct I64Set 

pub struct I64Set { /* private fields */ }

High-performance HashSet for i64 keys.

Uses the same optimizations as I64Map:

• i64::MIN as the in-table empty sentinel with that logical value out of band
• FxHash with pre-mixing (XOR>>16 before multiply) - 0 sequential collisions
• Backward-shift deletion (no tombstones)

Supports the full i64 value domain.

Implementations

impl I64Set

pub fn new() -> Self

pub fn with_capacity(capacity: usize) -> Self

pub fn len(&self) -> usize

pub fn is_empty(&self) -> bool

pub fn capacity(&self) -> usize

pub fn reserve(&mut self, additional: usize)

Reserves capacity for at least additional more elements to be inserted in the set. The collection may reserve more space to avoid frequent reallocations.

pub fn insert(&mut self, key: i64) -> bool

Insert a value into the set. Returns true if the value was newly inserted.

pub fn contains(&self, key: i64) -> bool

pub fn remove(&mut self, key: i64) -> bool

pub fn shrink_to_fit(&mut self)

Shrink the set to fit its current contents, releasing excess memory.

Call this after removing many entries to reclaim memory.

pub fn clear(&mut self)

pub fn iter(&self) -> impl Iterator<Item = i64> + '_

pub fn drain(&mut self) -> impl Iterator<Item = i64> + '_

Drains all values from the set, returning an iterator over them

Trait Implementations

impl Clone for I64Set

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for I64Set

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

Formats the value using the given formatter.

impl Default for I64Set

fn default() -> Self

Returns the “default value” for a type.

impl Extend<i64> for I64Set

fn extend<T: IntoIterator<Item = i64>>(&mut self, iter: T)

Extends a collection with the contents of an iterator.

fn extend_one(&mut self, item: T)

🔬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<i64> for I64Set

fn from_iter<T: IntoIterator<Item = i64>>(iter: T) -> Self

Creates a value from an iterator.

impl IntoIterator for I64Set

type Item = i64

The type of the elements being iterated over.

type IntoIter = I64SetIntoIter

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.