Struct graphgate_schema::KeyFields

pub struct KeyFields(_);

Methods from Deref<Target = IndexMap<Name, KeyFields>>

pub fn capacity(&self) -> usize

Computes in O(1) time.

pub fn hasher(&self) -> &S

Return a reference to the map’s BuildHasher.

pub fn len(&self) -> usize

Return the number of key-value pairs in the map.

Computes in O(1) time.

pub fn is_empty(&self) -> bool

Returns true if the map contains no elements.

Computes in O(1) time.

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

Return an iterator over the key-value pairs of the map, in their order

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

Return an iterator over the keys of the map, in their order

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

Return an iterator over the values of the map, in their order

pub fn contains_key<Q>(&self, key: &Q) -> bool where
    Q: Hash + Equivalent<K> + ?Sized, 

Return true if an equivalent to key exists in the map.

Computes in O(1) time (average).

pub fn get<Q>(&self, key: &Q) -> Option<&V> where
    Q: Hash + Equivalent<K> + ?Sized, 

Return a reference to the value stored for key, if it is present, else None.

Computes in O(1) time (average).

pub fn get_key_value<Q>(&self, key: &Q) -> Option<(&K, &V)> where
    Q: Hash + Equivalent<K> + ?Sized, 

Return references to the key-value pair stored for key, if it is present, else None.

Computes in O(1) time (average).

pub fn get_full<Q>(&self, key: &Q) -> Option<(usize, &K, &V)> where
    Q: Hash + Equivalent<K> + ?Sized, 

Return item index, key and value

pub fn get_index_of<Q>(&self, key: &Q) -> Option<usize> where
    Q: Hash + Equivalent<K> + ?Sized, 

Return item index, if it exists in the map

pub fn get_index(&self, index: usize) -> Option<(&K, &V)>

Get a key-value pair by index

Valid indices are 0 <= index < self.len()

Computes in O(1) time.

pub fn first(&self) -> Option<(&K, &V)>

Get the first key-value pair

Computes in O(1) time.

pub fn last(&self) -> Option<(&K, &V)>

Get the last key-value pair

Computes in O(1) time.

Trait Implementations

impl Debug for KeyFields

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

Formats the value using the given formatter.

impl Deref for KeyFields

type Target = IndexMap<Name, KeyFields>

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl Eq for KeyFields

impl PartialEq<KeyFields> for KeyFields

fn eq(&self, other: &KeyFields) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &KeyFields) -> bool

This method tests for !=.

impl StructuralEq for KeyFields

impl StructuralPartialEq for KeyFields