pub struct SKILL_GROUP_HASHES {
__private_field: (),
}
Fields§
§__private_field: ()
Methods from Deref<Target = HashMap<SkillGroupKind, Vec<u8>>>§
pub fn par_keys(&self) -> ParKeys<'_, K, V>
pub fn par_keys(&self) -> ParKeys<'_, K, V>
Visits (potentially in parallel) immutably borrowed keys in an arbitrary order.
pub fn par_values(&self) -> ParValues<'_, K, V>
pub fn par_values(&self) -> ParValues<'_, K, V>
Visits (potentially in parallel) immutably borrowed values in an arbitrary order.
pub fn par_eq(&self, other: &HashMap<K, V, S, A>) -> bool
pub fn par_eq(&self, other: &HashMap<K, V, S, A>) -> bool
Returns true
if the map is equal to another,
i.e. both maps contain the same keys mapped to the same values.
This method runs in a potentially parallel fashion.
pub fn hasher(&self) -> &S
pub fn hasher(&self) -> &S
Returns a reference to the map’s BuildHasher
.
§Examples
use hashbrown::HashMap;
use hashbrown::hash_map::DefaultHashBuilder;
let hasher = DefaultHashBuilder::default();
let map: HashMap<i32, i32> = HashMap::with_hasher(hasher);
let hasher: &DefaultHashBuilder = map.hasher();
pub fn capacity(&self) -> usize
pub fn capacity(&self) -> usize
Returns the number of elements the map can hold without reallocating.
This number is a lower bound; the HashMap<K, V>
might be able to hold
more, but is guaranteed to be able to hold at least this many.
§Examples
use hashbrown::HashMap;
let map: HashMap<i32, i32> = HashMap::with_capacity(100);
assert_eq!(map.len(), 0);
assert!(map.capacity() >= 100);
pub fn keys(&self) -> Keys<'_, K, V>
pub fn keys(&self) -> Keys<'_, K, V>
An iterator visiting all keys in arbitrary order.
The iterator element type is &'a K
.
§Examples
use hashbrown::HashMap;
let mut map = HashMap::new();
map.insert("a", 1);
map.insert("b", 2);
map.insert("c", 3);
assert_eq!(map.len(), 3);
let mut vec: Vec<&str> = Vec::new();
for key in map.keys() {
println!("{}", key);
vec.push(*key);
}
// The `Keys` iterator produces keys in arbitrary order, so the
// keys must be sorted to test them against a sorted array.
vec.sort_unstable();
assert_eq!(vec, ["a", "b", "c"]);
assert_eq!(map.len(), 3);
pub fn values(&self) -> Values<'_, K, V>
pub fn values(&self) -> Values<'_, K, V>
An iterator visiting all values in arbitrary order.
The iterator element type is &'a V
.
§Examples
use hashbrown::HashMap;
let mut map = HashMap::new();
map.insert("a", 1);
map.insert("b", 2);
map.insert("c", 3);
assert_eq!(map.len(), 3);
let mut vec: Vec<i32> = Vec::new();
for val in map.values() {
println!("{}", val);
vec.push(*val);
}
// The `Values` iterator produces values in arbitrary order, so the
// values must be sorted to test them against a sorted array.
vec.sort_unstable();
assert_eq!(vec, [1, 2, 3]);
assert_eq!(map.len(), 3);
pub fn iter(&self) -> Iter<'_, K, V>
pub fn iter(&self) -> Iter<'_, K, V>
An iterator visiting all key-value pairs in arbitrary order.
The iterator element type is (&'a K, &'a V)
.
§Examples
use hashbrown::HashMap;
let mut map = HashMap::new();
map.insert("a", 1);
map.insert("b", 2);
map.insert("c", 3);
assert_eq!(map.len(), 3);
let mut vec: Vec<(&str, i32)> = Vec::new();
for (key, val) in map.iter() {
println!("key: {} val: {}", key, val);
vec.push((*key, *val));
}
// The `Iter` iterator produces items in arbitrary order, so the
// items must be sorted to test them against a sorted array.
vec.sort_unstable();
assert_eq!(vec, [("a", 1), ("b", 2), ("c", 3)]);
assert_eq!(map.len(), 3);
pub fn len(&self) -> usize
pub fn len(&self) -> usize
Returns the number of elements in the map.
§Examples
use hashbrown::HashMap;
let mut a = HashMap::new();
assert_eq!(a.len(), 0);
a.insert(1, "a");
assert_eq!(a.len(), 1);
pub fn is_empty(&self) -> bool
pub fn is_empty(&self) -> bool
Returns true
if the map contains no elements.
§Examples
use hashbrown::HashMap;
let mut a = HashMap::new();
assert!(a.is_empty());
a.insert(1, "a");
assert!(!a.is_empty());
pub fn get<Q>(&self, k: &Q) -> Option<&V>
pub fn get<Q>(&self, k: &Q) -> Option<&V>
Returns a reference to the value corresponding to the key.
The key may be any borrowed form of the map’s key type, but
Hash
and Eq
on the borrowed form must match those for
the key type.
§Examples
use hashbrown::HashMap;
let mut map = HashMap::new();
map.insert(1, "a");
assert_eq!(map.get(&1), Some(&"a"));
assert_eq!(map.get(&2), None);
pub fn get_key_value<Q>(&self, k: &Q) -> Option<(&K, &V)>
pub fn get_key_value<Q>(&self, k: &Q) -> Option<(&K, &V)>
Returns the key-value pair corresponding to the supplied key.
The supplied key may be any borrowed form of the map’s key type, but
Hash
and Eq
on the borrowed form must match those for
the key type.
§Examples
use hashbrown::HashMap;
let mut map = HashMap::new();
map.insert(1, "a");
assert_eq!(map.get_key_value(&1), Some((&1, &"a")));
assert_eq!(map.get_key_value(&2), None);
pub fn contains_key<Q>(&self, k: &Q) -> bool
pub fn contains_key<Q>(&self, k: &Q) -> bool
Returns true
if the map contains a value for the specified key.
The key may be any borrowed form of the map’s key type, but
Hash
and Eq
on the borrowed form must match those for
the key type.
§Examples
use hashbrown::HashMap;
let mut map = HashMap::new();
map.insert(1, "a");
assert_eq!(map.contains_key(&1), true);
assert_eq!(map.contains_key(&2), false);
pub fn raw_entry(&self) -> RawEntryBuilder<'_, K, V, S, A>
pub fn raw_entry(&self) -> RawEntryBuilder<'_, K, V, S, A>
Creates a raw immutable entry builder for the HashMap.
Raw entries provide the lowest level of control for searching and manipulating a map. They must be manually initialized with a hash and then manually searched.
This is useful for
- Hash memoization
- Using a search key that doesn’t work with the Borrow trait
- Using custom comparison logic without newtype wrappers
Unless you are in such a situation, higher-level and more foolproof APIs like
get
should be preferred.
Immutable raw entries have very limited use; you might instead want raw_entry_mut
.
§Examples
use core::hash::{BuildHasher, Hash};
use hashbrown::HashMap;
let mut map = HashMap::new();
map.extend([("a", 100), ("b", 200), ("c", 300)]);
fn compute_hash<K: Hash + ?Sized, S: BuildHasher>(hash_builder: &S, key: &K) -> u64 {
use core::hash::Hasher;
let mut state = hash_builder.build_hasher();
key.hash(&mut state);
state.finish()
}
for k in ["a", "b", "c", "d", "e", "f"] {
let hash = compute_hash(map.hasher(), k);
let v = map.get(&k).cloned();
let kv = v.as_ref().map(|v| (&k, v));
println!("Key: {} and value: {:?}", k, v);
assert_eq!(map.raw_entry().from_key(&k), kv);
assert_eq!(map.raw_entry().from_hash(hash, |q| *q == k), kv);
assert_eq!(map.raw_entry().from_key_hashed_nocheck(hash, &k), kv);
}
pub fn raw_table(&self) -> &RawTable<(K, V), A>
pub fn raw_table(&self) -> &RawTable<(K, V), A>
Returns a reference to the [RawTable
] used underneath [HashMap
].
This function is only available if the raw
feature of the crate is enabled.
See raw_table_mut
for more.
Trait Implementations§
§impl Deref for SKILL_GROUP_HASHES
impl Deref for SKILL_GROUP_HASHES
§type Target = HashMap<SkillGroupKind, Vec<u8>>
type Target = HashMap<SkillGroupKind, Vec<u8>>
§fn deref(&self) -> &HashMap<SkillGroupKind, Vec<u8>>
fn deref(&self) -> &HashMap<SkillGroupKind, Vec<u8>>
impl LazyStatic for SKILL_GROUP_HASHES
Auto Trait Implementations§
impl Freeze for SKILL_GROUP_HASHES
impl RefUnwindSafe for SKILL_GROUP_HASHES
impl Send for SKILL_GROUP_HASHES
impl Sync for SKILL_GROUP_HASHES
impl Unpin for SKILL_GROUP_HASHES
impl UnwindSafe for SKILL_GROUP_HASHES
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
§impl<T> Instrument for T
impl<T> Instrument for T
§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read more