Struct Extensions 

pub struct Extensions<V>(/* private fields */);

Implementations

impl<V> Extensions<V>

pub fn len(&self) -> usize

pub fn is_empty(&self) -> bool

pub fn contains(&self, key: &impl Borrow<str>) -> bool

pub fn get_raw(&self, key: &impl Borrow<str>) -> Option<&V>

pub fn insert(&mut self, key: Nsid, value: V) -> Option<V>

impl<V: Value + Clone> Extensions<V>

pub fn get<'de, T: Deserialize<'de>>( &'de self, key: &impl Borrow<str>, ) -> Option<Result<T, V::Error>>

Gets an extension’s value by key, or returns None if the key doesn’t exist.

pub fn require<'de, T: Deserialize<'de>>( &'de self, key: &impl Borrow<str>, ) -> Result<T, V::Error>

Get’s an extension’s value by key, returning an error if the key doesn’t exist or doesn’t deserialize into the provided type.

Trait Implementations

impl<V: Clone> Clone for Extensions<V>

fn clone(&self) -> Extensions<V>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<V: Debug> Debug for Extensions<V>

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

Formats the value using the given formatter.

impl<V> Default for Extensions<V>

fn default() -> Self

Returns the “default value” for a type.

impl<'de, V: Deserialize<'de>> Deserialize<'de> for Extensions<V>

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<V> FromIterator<(Nsid, V)> for Extensions<V>

fn from_iter<T: IntoIterator<Item = (Nsid, V)>>(iter: T) -> Self

Creates a value from an iterator.

impl<'a, V> IntoIterator for &'a Extensions<V>

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

The type of the elements being iterated over.

type IntoIter = Iter<'a, Nsid, V>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

impl<V> IntoIterator for Extensions<V>

type Item = (Nsid, V)

The type of the elements being iterated over.

type IntoIter = IntoIter<Nsid, V>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

impl<V> IsEmpty for Extensions<V>

fn is_empty(&self) -> bool

impl<V: PartialEq> PartialEq for Extensions<V>

fn eq(&self, other: &Extensions<V>) -> bool

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<V> Serialize for Extensions<V>

where V: Serialize,

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl<V: Eq> Eq for Extensions<V>

impl<V> StructuralPartialEq for Extensions<V>