Trait NullableFromWasmAbi 

pub trait NullableFromWasmAbi: MaybeFromWasmAbi {
    // Required method
    fn is_null(abi: &Self::MaybeAbi) -> bool;
}

The Null test of Nullable<Self> received from JS. See NullableIntoWasmAbi.

⚠️ 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_null(abi: &Self::MaybeAbi) -> bool

Tests the ABI value for Nullable::Null.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl NullableFromWasmAbi for String

fn is_null(slice: &Self::MaybeAbi) -> bool

impl NullableFromWasmAbi for bool

fn is_null(js: &Self::MaybeAbi) -> bool

impl NullableFromWasmAbi for char

fn is_null(js: &Self::MaybeAbi) -> bool

impl NullableFromWasmAbi for f32

fn is_null(js: &f64) -> bool

impl NullableFromWasmAbi for f64

fn is_null(js: &MaybeAbi<f64>) -> bool

impl NullableFromWasmAbi for i8

fn is_null(js: &Self::MaybeAbi) -> bool

impl NullableFromWasmAbi for i16

fn is_null(js: &Self::MaybeAbi) -> bool

impl NullableFromWasmAbi for i32

fn is_null(js: &f64) -> bool

impl NullableFromWasmAbi for i64

fn is_null(js: &MaybeAbi<i64>) -> bool

impl NullableFromWasmAbi for i128

fn is_null(js: &MaybeAbi<i128>) -> bool

impl NullableFromWasmAbi for isize

fn is_null(js: &f64) -> bool

impl NullableFromWasmAbi for u8

fn is_null(js: &Self::MaybeAbi) -> bool

impl NullableFromWasmAbi for u16

fn is_null(js: &Self::MaybeAbi) -> bool

impl NullableFromWasmAbi for u32

fn is_null(js: &f64) -> bool

impl NullableFromWasmAbi for u64

fn is_null(js: &MaybeAbi<u64>) -> bool

impl NullableFromWasmAbi for u128

fn is_null(js: &MaybeAbi<u128>) -> bool

impl NullableFromWasmAbi for usize

fn is_null(js: &f64) -> bool

impl<T> NullableFromWasmAbi for *const T

fn is_null(js: &f64) -> bool

impl<T> NullableFromWasmAbi for *mut T

fn is_null(js: &f64) -> bool

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

where Self: FromWasmAbi<Abi = WasmSlice>,

fn is_null(slice: &Self::MaybeAbi) -> bool

impl<T> NullableFromWasmAbi for Vec<T>

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

fn is_null(abi: &Self::MaybeAbi) -> bool

Implementors

impl NullableFromWasmAbi for JsValue

impl NullableFromWasmAbi for Null

impl NullableFromWasmAbi for Undefined

impl<T> NullableFromWasmAbi for JsNullable<T>

impl<T> NullableFromWasmAbi for JsOption<T>