multiversx_sc_codec

Struct Empty

Source
pub struct Empty;
Expand description

Empty structure with an empty bytes representation. Equivalent to false, 0 or [u8; 0], but more explicit.

Note: the unit type () would have naturally fit this role, but we decided to make the unit type multi-value only.

Trait Implementations§

Source§

impl Debug for Empty

Source§

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

Formats the value using the given formatter. Read more
Source§

impl NestedDecode for Empty

Source§

fn dep_decode_or_handle_err<I, H>( _input: &mut I, _h: H, ) -> Result<Self, H::HandledErr>

Version of dep_decode that can handle errors as soon as they occur. For instance in can exit immediately and make sure that if it returns, it is a success. By not deferring error handling, this can lead to somewhat smaller bytecode.
Source§

fn dep_decode<I: NestedDecodeInput>(input: &mut I) -> Result<Self, DecodeError>

Attempt to deserialise the value from input, using the format of an object nested inside another structure. In case of success returns the deserialized value and the number of bytes consumed during the operation.
Source§

impl NestedEncode for Empty

Source§

fn dep_encode_or_handle_err<O, H>( &self, _dest: &mut O, _h: H, ) -> Result<(), H::HandledErr>

Version of dep_encode that can handle errors as soon as they occur. For instance in can exit immediately and make sure that if it returns, it is a success. By not deferring error handling, this can lead to somewhat smaller bytecode.
Source§

fn dep_encode<O: NestedEncodeOutput>( &self, dest: &mut O, ) -> Result<(), EncodeError>

NestedEncode to output, using the format of an object nested inside another structure. Does not provide compact version.
Source§

impl PartialEq for Empty

Source§

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

Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§

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

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

impl TopDecode for Empty

Source§

fn top_decode_or_handle_err<I, H>(input: I, h: H) -> Result<Self, H::HandledErr>

Version of top_decode that can handle errors as soon as they occur. For instance it can exit immediately and make sure that if it returns, it is a success. By not deferring error handling, this can lead to somewhat smaller bytecode.
Source§

fn top_decode<I>(input: I) -> Result<Self, DecodeError>
where I: TopDecodeInput,

Attempt to deserialize the value from input.
Source§

impl TopEncode for Empty

Source§

fn top_encode_or_handle_err<O, H>( &self, output: O, _h: H, ) -> Result<(), H::HandledErr>

Version of top_encode that can handle errors as soon as they occur. For instance in can exit immediately and make sure that if it returns, it is a success. By not deferring error handling, this can lead to somewhat smaller bytecode.
Source§

fn top_encode<O>(&self, output: O) -> Result<(), EncodeError>
where O: TopEncodeOutput,

Attempt to serialize the value to ouput.
Source§

impl Eq for Empty

Source§

impl StructuralPartialEq for Empty

Auto Trait Implementations§

§

impl Freeze for Empty

§

impl RefUnwindSafe for Empty

§

impl Send for Empty

§

impl Sync for Empty

§

impl Unpin for Empty

§

impl UnwindSafe for Empty

Blanket Implementations§

Source§

impl<T> Any for T
where T: 'static + ?Sized,

Source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
Source§

impl<T> Borrow<T> for T
where T: ?Sized,

Source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
Source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

Source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
Source§

impl<T> From<T> for T

Source§

fn from(t: T) -> T

Returns the argument unchanged.

Source§

impl<T, U> Into<U> for T
where U: From<T>,

Source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

Source§

impl<T> TopDecodeMulti for T
where T: TopDecode,

Source§

const IS_SINGLE_VALUE: bool = true

Used to optimize single value loading of endpoint arguments.
Source§

fn multi_decode_or_handle_err<I, H>( input: &mut I, h: H, ) -> Result<T, <H as DecodeErrorHandler>::HandledErr>

Source§

fn multi_decode<I>(input: &mut I) -> Result<Self, DecodeError>

Source§

impl<T> TopDecodeMultiLength for T
where T: TopEncode + TopDecode,

Source§

const LEN: usize = 1usize

Source§

fn get_len() -> usize

Source§

impl<T> TopEncodeMulti for T
where T: TopEncode,

Source§

fn multi_encode_or_handle_err<O, H>( &self, output: &mut O, h: H, ) -> Result<(), <H as EncodeErrorHandler>::HandledErr>

Version of top_encode that can handle errors as soon as they occur. For instance in can exit immediately and make sure that if it returns, it is a success. By not deferring error handling, this can lead to somewhat smaller bytecode.
Source§

fn multi_encode<O>(&self, output: &mut O) -> Result<(), EncodeError>

Attempt to serialize the value to ouput.
Source§

impl<T, U> TryFrom<U> for T
where U: Into<T>,

Source§

type Error = Infallible

The type returned in the event of a conversion error.
Source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
Source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

Source§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
Source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.