Struct HashSet 

pub struct HashSet<T, S = RandomState> { /* private fields */ }

A wrapper type around [hashbrown::hash_set::HashSet] that only exposes fallible allocation.

Implementations

impl<T> HashSet<T, RandomState>

pub fn new() -> Self

Same as [hashbrown::hash_set::HashSet::new].

impl<T> HashSet<T, RandomState>

where T: Eq + Hash,

pub fn with_capacity(capacity: usize) -> Result<Self, OutOfMemory>

Same as [hashbrown::hash_set::HashSet::with_capacity] but returns an error on allocation failure.

impl<T, S> HashSet<T, S>

pub const fn with_hasher(hasher: S) -> Self

Same as [hashbrown::hash_set::HashSet::with_hasher].

pub fn capacity(&self) -> usize

Same as [hashbrown::hash_set::HashSet::capacity].

pub fn iter(&self) -> Iter<'_, T>

Same as [hashbrown::hash_set::HashSet::iter].

pub fn len(&self) -> usize

Same as [hashbrown::hash_set::HashSet::len].

pub fn is_empty(&self) -> bool

Same as [hashbrown::hash_set::HashSet::is_empty].

pub fn drain(&mut self) -> Drain<'_, T>

Same as [hashbrown::hash_set::HashSet::drain].

pub fn retain<F>(&mut self, f: F)

where F: FnMut(&T) -> bool,

Same as [hashbrown::hash_set::HashSet::retain].

pub fn extract_if<F>(&mut self, f: F) -> ExtractIf<'_, T, F>

where F: FnMut(&T) -> bool,

Same as [hashbrown::hash_set::HashSet::extract_if].

pub fn clear(&mut self)

Same as [hashbrown::hash_set::HashSet::clear].

impl<T, S> HashSet<T, S>

where T: Eq + Hash, S: BuildHasher,

pub fn with_capacity_and_hasher( capacity: usize, hasher: S, ) -> Result<Self, OutOfMemory>

Same as [hashbrown::hash_set::HashSet::with_capacity_and_hasher] but returns an error on allocation failure.

pub fn reserve(&mut self, additional: usize) -> Result<(), OutOfMemory>

Same as [hashbrown::hash_set::HashSet::reserve] but returns an error on allocation failure.

pub fn contains<Q>(&self, value: &Q) -> bool

where Q: Hash + Eq + ?Sized, T: Borrow<Q>,

Same as [hashbrown::hash_set::HashSet::contains].

pub fn get<Q>(&self, value: &Q) -> Option<&T>

where Q: Hash + Eq + ?Sized, T: Borrow<Q>,

Same as [hashbrown::hash_set::HashSet::get].

pub fn insert(&mut self, value: T) -> Result<bool, OutOfMemory>

Same as [hashbrown::hash_set::HashSet::insert] but returns an error on allocation failure.

pub fn remove<Q>(&mut self, value: &Q) -> bool

where Q: Hash + Eq + ?Sized, T: Borrow<Q>,

Same as [hashbrown::hash_set::HashSet::remove].

pub fn take<Q>(&mut self, value: &Q) -> Option<T>

where Q: Hash + Eq + ?Sized, T: Borrow<Q>,

Same as [hashbrown::hash_set::HashSet::take].

Trait Implementations

impl<T, S> Debug for HashSet<T, S>

where T: Debug,

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

Formats the value using the given formatter.

impl<T, S> Default for HashSet<T, S>

where S: Default,

fn default() -> Self

Returns the “default value” for a type.

impl<T, S> PartialEq for HashSet<T, S>

where T: Eq + Hash, S: BuildHasher,

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<T, S> Eq for HashSet<T, S>

where T: Eq + Hash, S: BuildHasher,