Struct KeySet 

pub struct KeySet<K: Key> { /* private fields */ }

A unique set of keys.

Implementations

impl<K: Key> KeySet<K>

pub fn with_capacity(capacity: usize) -> Self

Construct a new, empty KeySet.

pub fn is_empty(&self) -> bool

Returns true if the set is empty.

pub fn insert(&mut self, key: K)

Insert a key into the set.

pub fn extend(&mut self, keys: impl IntoIterator<Item = K>)

Extend the set from an iterable.

pub fn clear(&mut self)

Clear the set.

pub fn iter(&self) -> Iter<'_, K>

Returns an iterator over the K entries in the map.

Trait Implementations

impl<K: Clone + Key> Clone for KeySet<K>

fn clone(&self) -> KeySet<K>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<K: Debug + Key> Debug for KeySet<K>

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

Formats the value using the given formatter.

impl<K: Key + Display> Display for KeySet<K>

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

Formats the value using the given formatter.

impl<K: Key> FromIterator<K> for KeySet<K>

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

Creates a value from an iterator.

impl<K: Key> Index<K> for KeySet<K>

type Output = bool

The returned type after indexing.

fn index(&self, key: K) -> &Self::Output

Performs the indexing (container[index]) operation.