Enum Maybe 

pub enum Maybe<T> {
    Absent,
    Given(T),
}

A key that may be absent, unlike Option, which also reads key: null as absent. Use with #[serde(default)].

Variants

Absent

Given(T)

Trait Implementations

impl<T: Clone> Clone for Maybe<T>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for Maybe<T>

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

Formats the value using the given formatter.

impl<T> Default for Maybe<T>

fn default() -> Self

Returns the “default value” for a type.

impl<'de, T: Deserialize<'de>> Deserialize<'de> for Maybe<T>

fn deserialize<D: Deserializer<'de>>(d: D) -> Result<Self, D::Error>

Deserialize this value from the given Serde deserializer.

impl<T: JsonSchema> JsonSchema for Maybe<T>

fn schema_name() -> Cow<'static, str>

The name of the generated JSON Schema.

fn json_schema(g: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn inline_schema() -> bool

Whether JSON Schemas generated for this type should be included directly in parent schemas, rather than being re-used where possible using the $ref keyword.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

impl<T: PartialEq> PartialEq for Maybe<T>

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

Equality operator ==.

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

Inequality operator !=.

impl<T: PartialEq> StructuralPartialEq for Maybe<T>