Struct js_function_promisify::Callback[−][src]

pub struct Callback<F: 'static + ?Sized> { /* fields omitted */ }
Expand description

A Callback<F> is a wrapper around a wasm_bindgen::prelude::Closure<F> which supports TODO:

Implementations

impl<F: 'static + ?Sized> Callback<F>[src]

pub fn new<X>(closure: X) -> Callback<F>ⓘ

Notable traits for Callback<F>

impl<F: 'static + ?Sized> Future for Callback<F> type Output = Result<JsValue, JsValue>;
 where
    Self: From<X>, [src]

pub fn as_function(&self) -> Function[src]

pub fn as_closure(&self) -> Rc<Closure<F>>[src]

impl Callback<dyn FnMut(JsValue, JsValue)>[src]

pub fn default_node() -> Self[src]

Creates a node-style callback with the args (err, data). If err is null or undefined, the Result is Ok(data). Otherwise, it is Err(err).

Trait Implementations

impl<F: Debug + 'static + ?Sized> Debug for Callback<F>[src]

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

Formats the value using the given formatter. Read more

impl Default for Callback<dyn FnMut(JsValue)>[src]

The Default impl for Callback creates a single-arg callback, whose Result is always Ok.

fn default() -> Self[src]

Returns the “default value” for a type. Read more

impl<A> From<A> for Callback<dyn FnMut(JsValue, JsValue, JsValue, JsValue, JsValue, JsValue, JsValue)> where
    A: 'static + FnOnce(JsValue, JsValue, JsValue, JsValue, JsValue, JsValue, JsValue) -> Result<JsValue, JsValue>, [src]

fn from(cb: A) -> Self[src]

Performs the conversion.

impl<A> From<A> for Callback<dyn FnMut(JsValue, JsValue, JsValue, JsValue, JsValue, JsValue)> where
    A: 'static + FnOnce(JsValue, JsValue, JsValue, JsValue, JsValue, JsValue) -> Result<JsValue, JsValue>, [src]

fn from(cb: A) -> Self[src]

Performs the conversion.

impl<A> From<A> for Callback<dyn FnMut(JsValue, JsValue, JsValue, JsValue, JsValue)> where
    A: 'static + FnOnce(JsValue, JsValue, JsValue, JsValue, JsValue) -> Result<JsValue, JsValue>, [src]

fn from(cb: A) -> Self[src]

Performs the conversion.

impl<A> From<A> for Callback<dyn FnMut(JsValue, JsValue, JsValue, JsValue)> where
    A: 'static + FnOnce(JsValue, JsValue, JsValue, JsValue) -> Result<JsValue, JsValue>, [src]

fn from(cb: A) -> Self[src]

Performs the conversion.

impl<A> From<A> for Callback<dyn FnMut(JsValue, JsValue, JsValue)> where
    A: 'static + FnOnce(JsValue, JsValue, JsValue) -> Result<JsValue, JsValue>, [src]

fn from(cb: A) -> Self[src]

Performs the conversion.

impl<A> From<A> for Callback<dyn FnMut(JsValue, JsValue)> where
    A: 'static + FnOnce(JsValue, JsValue) -> Result<JsValue, JsValue>, [src]

fn from(cb: A) -> Self[src]

Performs the conversion.

impl<A> From<A> for Callback<dyn FnMut(JsValue)> where
    A: 'static + FnOnce(JsValue) -> Result<JsValue, JsValue>, [src]

fn from(cb: A) -> Self[src]

Performs the conversion.

impl<A> From<A> for Callback<dyn FnMut()> where
    A: 'static + FnOnce() -> Result<JsValue, JsValue>, [src]

fn from(cb: A) -> Self[src]

Performs the conversion.

impl<F: 'static + ?Sized> Future for Callback<F>[src]

Standard Future impl for Callback

type Output = Result<JsValue, JsValue>

The type of value produced on completion.

fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output>[src]

Attempt to resolve the future to a final value, registering the current task for wakeup if the value is not yet available. Read more

Auto Trait Implementations

impl<F> !RefUnwindSafe for Callback<F>

impl<F> !Send for Callback<F>

impl<F> !Sync for Callback<F>

impl<F: ?Sized> Unpin for Callback<F>

impl<F> !UnwindSafe for Callback<F>

Blanket Implementations

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

pub fn type_id(&self) -> TypeId[src]

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T where
    T: ?Sized, [src]

pub fn borrow(&self) -> &T[src]

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T where
    T: ?Sized, [src]

pub fn borrow_mut(&mut self) -> &mut T[src]

Mutably borrows from an owned value. Read more

impl<T> From<T> for T[src]

pub fn from(t: T) -> T[src]

Performs the conversion.

impl<T, U> Into<U> for T where
    U: From<T>, [src]

pub fn into(self) -> U[src]

Performs the conversion.

impl<F> IntoFuture for F where
    F: Future, [src]

type Output = <F as Future>::Output

🔬 This is a nightly-only experimental API. (into_future)

The output that the future will produce on completion.

type Future = F

🔬 This is a nightly-only experimental API. (into_future)

Which kind of future are we turning this into?

pub fn into_future(self) -> <F as IntoFuture>::Future[src]

🔬 This is a nightly-only experimental API. (into_future)

Creates a future from a value.

impl<T, U> TryFrom<U> for T where
    U: Into<T>, [src]

type Error = Infallible

The type returned in the event of a conversion error.

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

Performs the conversion.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, [src]

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

The type returned in the event of a conversion error.

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

Performs the conversion.