Enum Unit 

#[repr(u8)]
pub enum Unit {
    Unit = 0,
}

The empty FIDL “unit” struct.

FIDL wire type layouts follow the same rules as C/C++ type layout rules. Because every object must have a unique address, the empty “unit” type must be be a single byte that is set to zero.

Variants

Unit = 0

Empty structs are represented as a single 0u8.

Trait Implementations

impl Clone for Unit

fn clone(&self) -> Unit

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Constrained for Unit

type Constraint = ()

Type of constraint information for this type.

fn validate( _: Slot<'_, Unit>, _: <Unit as Constrained>::Constraint, ) -> Result<(), ValidationError>

Validate a slot of this type against a constraint. Can be called when pointers/envelopes are just presence markers.

impl Debug for Unit

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

Formats the value using the given formatter.

impl<D> Decode<D> for Unit

where D: ?Sized,

fn decode( slot: Slot<'_, Unit>, _: &mut D, _: <Unit as Constrained>::Constraint, ) -> Result<(), DecodeError>

Decodes a value into a slot using a decoder.

impl Default for Unit

fn default() -> Unit

Returns the “default value” for a type.

impl Display for Unit

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

Formats the value using the given formatter.

impl<E> Encode<Unit, E> for &()

where E: ?Sized,

fn encode( self, encoder: &mut E, out: &mut MaybeUninit<Unit>, constraint: (), ) -> Result<(), EncodeError>

Encodes this value into an encoder and output.

const COPY_OPTIMIZATION: CopyOptimization<Self, W> = _

Whether the conversion from Self to W is equivalent to copying the raw bytes of Self.

impl<E> Encode<Unit, E> for ()

where E: ?Sized,

fn encode( self, _: &mut E, out: &mut MaybeUninit<Unit>, _: (), ) -> Result<(), EncodeError>

Encodes this value into an encoder and output.

const COPY_OPTIMIZATION: CopyOptimization<Self, W> = _

Whether the conversion from Self to W is equivalent to copying the raw bytes of Self.

impl<'a> From<&'a ()> for Unit

fn from(_: &'a ()) -> Unit

Converts to this type from the input type.

impl<'a> From<&'a Unit> for ()

fn from(_: &'a Unit)

Converts to this type from the input type.

impl From<()> for Unit

fn from(_: ()) -> Unit

Converts to this type from the input type.

impl From<Unit> for ()

fn from(_: Unit)

Converts to this type from the input type.

impl FromWire<Unit> for ()

fn from_wire(wire: Unit)

Converts the given owned value to this type.

const COPY_OPTIMIZATION: CopyOptimization<W, Self> = _

Whether the conversion from W to Self is equivalent to copying the raw bytes of W.

impl FromWireRef<Unit> for ()

fn from_wire_ref(_: &Unit)

Converts the given reference to this type.

impl Hash for Unit

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 IntoNatural for Unit

type Natural = ()

A good default type for this wire type to convert into.

fn into_natural(self) -> Self::Natural

Converts this type into its natural equivalent.

impl Ord for Unit

fn cmp(&self, other: &Unit) -> 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 PartialEq for Unit

fn eq(&self, other: &Unit) -> 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 PartialOrd for Unit

fn partial_cmp(&self, other: &Unit) -> 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 Wire for Unit

type Narrowed<'de> = Unit

The narrowed wire type, restricted to the 'de lifetime.

fn zero_padding(_: &mut MaybeUninit<Unit>)

Writes zeroes to the padding for this type, if any.

impl Copy for Unit

impl Eq for Unit

impl StructuralPartialEq for Unit