Struct EmptyCommonality

pub struct EmptyCommonality(/* private fields */);

A commonality for collection types, where the common value is an empty collection.

In most cases, this commonality behaves the same as DefaultCommonality because typical collection types’ implementations of Default::default yield empty collections. However, this commonality avoids the need for PartialEq bounds on the collection type.

Trait Implementations

impl<K, V> Commonality<BTreeMap<K, V>> for EmptyCommonality

fn common() -> BTreeMap<K, V>

The common value of type V.

fn is_common(value: &BTreeMap<K, V>) -> bool

Returns true if value is the common value of type V. Self::is_common(Self::common()) must be true.

impl<T> Commonality<BTreeSet<T>> for EmptyCommonality

fn common() -> BTreeSet<T>

The common value of type V.

fn is_common(value: &BTreeSet<T>) -> bool

Returns true if value is the common value of type V. Self::is_common(Self::common()) must be true.

impl<K, V> Commonality<HashMap<K, V>> for EmptyCommonality

fn common() -> HashMap<K, V>

The common value of type V.

fn is_common(value: &HashMap<K, V>) -> bool

Returns true if value is the common value of type V. Self::is_common(Self::common()) must be true.

impl<T> Commonality<HashSet<T>> for EmptyCommonality

fn common() -> HashSet<T>

The common value of type V.

fn is_common(value: &HashSet<T>) -> bool

Returns true if value is the common value of type V. Self::is_common(Self::common()) must be true.

impl<K, V, C: Commonality<V>> Commonality<TotalBTreeMap<K, V, C>> for EmptyCommonality

fn common() -> TotalBTreeMap<K, V, C>

The common value of type V.

fn is_common(value: &TotalBTreeMap<K, V, C>) -> bool

Returns true if value is the common value of type V. Self::is_common(Self::common()) must be true.

impl<K, V, C: Commonality<V>> Commonality<TotalHashMap<K, V, C>> for EmptyCommonality

fn common() -> TotalHashMap<K, V, C>

The common value of type V.

fn is_common(value: &TotalHashMap<K, V, C>) -> bool

Returns true if value is the common value of type V. Self::is_common(Self::common()) must be true.

impl<T> Commonality<Vec<T>> for EmptyCommonality

fn common() -> Vec<T>

The common value of type V.

fn is_common(value: &Vec<T>) -> bool

Returns true if value is the common value of type V. Self::is_common(Self::common()) must be true.

impl<T> Commonality<VecDeque<T>> for EmptyCommonality

fn common() -> VecDeque<T>

The common value of type V.

fn is_common(value: &VecDeque<T>) -> bool

Returns true if value is the common value of type V. Self::is_common(Self::common()) must be true.