Trait OptionFromWasmAbi

pub trait OptionFromWasmAbi: FromWasmAbi {
    // Required method
    fn is_none(abi: &Self::Abi) -> bool;
}

Available on crate feature dep_web_sys only.

Indicates that this type can be received from JS as Option<Self>.

This trait is used when implementing FromWasmAbi for Option<T>.

⚠️ Unstable

This is part of the internal convert module, no stability guarantees are provided. Use at your own risk. See its documentation for more details.

Required Methods

fn is_none(abi: &Self::Abi) -> bool

Tests whether the argument is a “none” instance. If so it will be deserialized as None, and otherwise it will be passed to FromWasmAbi.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl OptionFromWasmAbi for bool

fn is_none(js: &u32) -> bool

impl OptionFromWasmAbi for char

fn is_none(js: &u32) -> bool

impl OptionFromWasmAbi for i8

fn is_none(js: &u32) -> bool

impl OptionFromWasmAbi for i16

fn is_none(js: &u32) -> bool

impl OptionFromWasmAbi for u8

fn is_none(js: &u32) -> bool

impl OptionFromWasmAbi for u16

fn is_none(js: &u32) -> bool

Implementors

impl OptionFromWasmAbi for String

impl OptionFromWasmAbi for Collator

impl OptionFromWasmAbi for DateTimeFormat

impl OptionFromWasmAbi for NumberFormat

impl OptionFromWasmAbi for PluralRules

impl OptionFromWasmAbi for RelativeTimeFormat

impl OptionFromWasmAbi for CompileError

impl OptionFromWasmAbi for Exception

impl OptionFromWasmAbi for Global

impl OptionFromWasmAbi for Instance

impl OptionFromWasmAbi for LinkError

impl OptionFromWasmAbi for Memory

impl OptionFromWasmAbi for Module

impl OptionFromWasmAbi for RuntimeError

impl OptionFromWasmAbi for Table

impl OptionFromWasmAbi for Tag

impl OptionFromWasmAbi for Array

impl OptionFromWasmAbi for ArrayBuffer

impl OptionFromWasmAbi for AsyncIterator

impl OptionFromWasmAbi for BigInt64Array

impl OptionFromWasmAbi for BigInt

impl OptionFromWasmAbi for BigUint64Array

impl OptionFromWasmAbi for Boolean

impl OptionFromWasmAbi for DataView

impl OptionFromWasmAbi for Date

impl OptionFromWasmAbi for Error

impl OptionFromWasmAbi for EvalError

impl OptionFromWasmAbi for Float32Array

impl OptionFromWasmAbi for Float64Array

impl OptionFromWasmAbi for Function

impl OptionFromWasmAbi for Generator

impl OptionFromWasmAbi for Int8Array

impl OptionFromWasmAbi for Int16Array

impl OptionFromWasmAbi for Int32Array

impl OptionFromWasmAbi for Iterator

impl OptionFromWasmAbi for IteratorNext

impl OptionFromWasmAbi for JsString

impl OptionFromWasmAbi for Map

impl OptionFromWasmAbi for Number

impl OptionFromWasmAbi for Object

impl OptionFromWasmAbi for Promise

impl OptionFromWasmAbi for Proxy

impl OptionFromWasmAbi for RangeError

impl OptionFromWasmAbi for ReferenceError

impl OptionFromWasmAbi for RegExp

impl OptionFromWasmAbi for Set

impl OptionFromWasmAbi for SharedArrayBuffer

impl OptionFromWasmAbi for Symbol

impl OptionFromWasmAbi for SyntaxError

impl OptionFromWasmAbi for TypeError

impl OptionFromWasmAbi for Uint8Array

impl OptionFromWasmAbi for Uint8ClampedArray

impl OptionFromWasmAbi for Uint16Array

impl OptionFromWasmAbi for Uint32Array

impl OptionFromWasmAbi for UriError

impl OptionFromWasmAbi for WeakMap

impl OptionFromWasmAbi for WeakSet

impl<T> OptionFromWasmAbi for Box<[T]>

where Box<[T]>: FromWasmAbi<Abi = WasmSlice>,

impl<T> OptionFromWasmAbi for NonNull<T>

impl<T> OptionFromWasmAbi for Vec<T>

where Box<[T]>: FromWasmAbi<Abi = WasmSlice>,