Enum OneOrMany 

pub enum OneOrMany<T> {
    One(T),
    Many(Vec<T>),
}

One or many.

Serializes/deserializes into/from either a value, or an array of values.

Variants

One(T)

A single value.

Many(Vec<T>)

An array of values.

Implementations

impl<T> OneOrMany<T>

pub fn any<F>(&self, f: F) -> bool

where F: Fn(&T) -> bool,

pub fn len(&self) -> usize

pub fn is_empty(&self) -> bool

pub fn contains(&self, x: &T) -> bool

where T: PartialEq,

pub fn as_slice(&self) -> &[T]

pub fn first(&self) -> Option<&T>

pub fn to_single(&self) -> Option<&T>

pub fn to_single_mut(&mut self) -> Option<&mut T>

pub fn into_single(self) -> Option<T>

pub fn into_vec(self) -> Vec<T>

Trait Implementations

impl<T> Clone for OneOrMany<T>

where T: Clone,

fn clone(&self) -> OneOrMany<T>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T> Debug for OneOrMany<T>

where T: Debug,

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

Formats the value using the given formatter.

impl<T> Default for OneOrMany<T>

fn default() -> OneOrMany<T>

Returns the “default value” for a type.

impl<'de, T> Deserialize<'de> for OneOrMany<T>

where T: Deserialize<'de>,

fn deserialize<D>( deserializer: D, ) -> Result<OneOrMany<T>, <D as Deserializer<'de>>::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<T> Hash for OneOrMany<T>

where T: Hash,

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<'a, T> IntoIterator for &'a OneOrMany<T>

type Item = &'a T

The type of the elements being iterated over.

type IntoIter = IntoIter<<&'a OneOrMany<T> as IntoIterator>::Item>

Which kind of iterator are we turning this into?

fn into_iter(self) -> <&'a OneOrMany<T> as IntoIterator>::IntoIter

Creates an iterator from a value.

impl<T> IntoIterator for OneOrMany<T>

type Item = T

The type of the elements being iterated over.

type IntoIter = IntoIter<<OneOrMany<T> as IntoIterator>::Item>

Which kind of iterator are we turning this into?

fn into_iter(self) -> <OneOrMany<T> as IntoIterator>::IntoIter

Creates an iterator from a value.

impl<T> Ord for OneOrMany<T>

where T: Ord,

fn cmp(&self, other: &OneOrMany<T>) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl<T> PartialEq for OneOrMany<T>

where T: PartialEq,

fn eq(&self, other: &OneOrMany<T>) -> 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<T> PartialOrd for OneOrMany<T>

where T: PartialOrd,

fn partial_cmp(&self, other: &OneOrMany<T>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl<T> Serialize for OneOrMany<T>

where T: Serialize,

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl<T> Eq for OneOrMany<T>

where T: Eq,

impl<T> StructuralPartialEq for OneOrMany<T>