Struct Result 

pub struct Result<'de, T, E> { /* private fields */ }

A FIDL result union.

Implementations

impl<T, E> Result<'_, T, E>

pub fn is_ok(&self) -> bool

Returns whether the result is Ok.

pub fn is_err(&self) -> bool

Returns whether the result is Err.

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

Returns the Ok value of the result, if any.

pub fn err(&self) -> Option<&E>

Returns the Err value of the result, if any.

pub fn unwrap(&self) -> &T

Returns the contained Ok value.

Panics if the result was not Ok.

pub fn unwrap_err(&self) -> &E

Returns the contained Err value.

Panics if the result was not Err.

pub fn as_ref(&self) -> Result<&T, &E>

Returns a Result of a reference to the value or error.

pub fn into_result(self) -> Result<T, E>

Returns a Result of the owned value or error.

Trait Implementations

impl<T, E> Clone for Result<'_, T, E>

where T: Clone, E: Clone,

fn clone(&self) -> Result<'_, T, E>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T, E> Constrained for Result<'_, T, E>

where T: Constrained<Constraint = ()>, E: Constrained<Constraint = ()>,

type Constraint = ()

Type of constraint information for this type.

fn validate( _: Slot<'_, Result<'_, T, E>>, _: <Result<'_, T, E> 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<T, E> Debug for Result<'_, T, E>

where T: Debug, E: Debug,

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

Formats the value using the given formatter.

impl<'de, D, T, E> Decode<D> for Result<'de, T, E>

where D: Decoder<'de> + ?Sized, T: Decode<D, Constraint = ()>, E: Decode<D, Constraint = ()>,

fn decode( slot: Slot<'_, Result<'de, T, E>>, decoder: &mut D, _: (), ) -> Result<(), DecodeError>

Decodes a value into a slot using a decoder.

impl<T, E> Drop for Result<'_, T, E>

fn drop(&mut self)

Executes the destructor for this type.

impl<'a, Enc, WT, T, WE, E> Encode<Result<'static, WT, WE>, Enc> for &'a Result<T, E>

where Enc: Encoder + ?Sized, WT: Wire<Constraint = ()>, &'a T: Encode<WT, Enc>, WE: Wire<Constraint = ()>, &'a E: Encode<WE, Enc>,

fn encode( self, encoder: &mut Enc, out: &mut MaybeUninit<Result<'static, WT, WE>>, _: (), ) -> 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<Enc, WT, T, WE, E> Encode<Result<'static, WT, WE>, Enc> for Result<T, E>

where Enc: Encoder + ?Sized, WT: Wire<Constraint = ()>, T: Encode<WT, Enc>, WE: Wire<Constraint = ()>, E: Encode<WE, Enc>,

fn encode( self, encoder: &mut Enc, out: &mut MaybeUninit<Result<'_, WT, WE>>, _: (), ) -> 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<T, E, WT, WE> FromWire<Result<'_, WT, WE>> for Result<T, E>

where T: FromWire<WT>, E: FromWire<WE>,

fn from_wire(wire: Result<'_, WT, WE>) -> Result<T, E>

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<T, E, WT, WE> FromWireRef<Result<'_, WT, WE>> for Result<T, E>

where T: FromWireRef<WT>, E: FromWireRef<WE>,

fn from_wire_ref(wire: &Result<'_, WT, WE>) -> Result<T, E>

Converts the given reference to this type.

impl<T, E> IntoNatural for Result<'_, T, E>

where T: IntoNatural, E: IntoNatural,

type Natural = Result<<T as IntoNatural>::Natural, <E as IntoNatural>::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<T, E> Wire for Result<'static, T, E>

where T: Wire<Constraint = ()>, E: Wire<Constraint = ()>,

type Narrowed<'de> = Result<'de, <T as Wire>::Narrowed<'de>, <E as Wire>::Narrowed<'de>>

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

fn zero_padding(out: &mut MaybeUninit<Result<'static, T, E>>)

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