Struct Map

pub struct Map<K: 'static, V: 'static> { /* private fields */ }

An immutable map constructed at compile time.

Note

The fields of this struct are public so that they may be initialized by the phf_map! macro and code generation. They are subject to change at any time and should never be accessed directly.

Implementations

impl<K, V> Map<K, V>

pub const fn new() -> Self

Create a new, empty, immutable map.

pub const fn len(&self) -> usize

Returns the number of entries in the Map.

pub const fn is_empty(&self) -> bool

Returns true if the Map is empty.

pub fn contains_key<T>(&self, key: &T) -> bool

where T: Eq + PhfHash + ?Sized, K: PhfBorrow<T>,

Determines if key is in the Map.

pub fn get<T>(&self, key: &T) -> Option<&V>

where T: Eq + PhfHash + ?Sized, K: PhfBorrow<T>,

Returns a reference to the value that key maps to.

pub fn get_key<T>(&self, key: &T) -> Option<&K>

where T: Eq + PhfHash + ?Sized, K: PhfBorrow<T>,

Returns a reference to the map’s internal static instance of the given key.

This can be useful for interning schemes.

pub fn get_entry<T>(&self, key: &T) -> Option<(&K, &V)>

where T: Eq + PhfHash + ?Sized, K: PhfBorrow<T>,

Like get, but returns both the key and the value.

pub fn entries(&self) -> Entries<'_, K, V>

Returns an iterator over the key/value pairs in the map.

Entries are returned in an arbitrary but fixed order.

pub fn keys(&self) -> Keys<'_, K, V>

Returns an iterator over the keys in the map.

Keys are returned in an arbitrary but fixed order.

pub fn values(&self) -> Values<'_, K, V>

Returns an iterator over the values in the map.

Values are returned in an arbitrary but fixed order.

Trait Implementations

impl<K, V> Debug for Map<K, V>

where K: Debug, V: Debug,

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

Formats the value using the given formatter.

impl<K, V> Default for Map<K, V>

fn default() -> Self

Returns the “default value” for a type.

impl<'a, K, V, T> Index<&'a T> for Map<K, V>

where T: Eq + PhfHash + ?Sized, K: PhfBorrow<T>,

type Output = V

The returned type after indexing.

fn index(&self, k: &'a T) -> &V

Performs the indexing (container[index]) operation.

impl<'a, K, V> IntoIterator for &'a Map<K, V>

type Item = (&'a K, &'a V)

The type of the elements being iterated over.

type IntoIter = Entries<'a, K, V>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Entries<'a, K, V>

Creates an iterator from a value.