Trait core::ops::AsyncFn

pub trait AsyncFn<Args: Tuple>: AsyncFnMut<Args> {
    type CallFuture<'a>: Future<Output = Self::Output>
       where Self: 'a;

    // Required method
    extern "rust-call" fn async_call(
        &self,
        args: Args
    ) -> Self::CallFuture<'_>;
}

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

An async-aware version of the Fn trait.

All async fn and functions returning futures implement this trait.

Required Associated Types

type CallFuture<'a>: Future<Output = Self::Output> where Self: 'a

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

Future returned by AsyncFn::async_call.

Required Methods

extern "rust-call" fn async_call( &self, args: Args ) -> Self::CallFuture<'_>

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

Call the AsyncFn, returning a future which may borrow from the called closure.

Object Safety

This trait is not object safe.

Implementors

impl<F: Fn<A>, A: Tuple> AsyncFn<A> for F

where <F as FnOnce<A>>::Output: Future,

type CallFuture<'a> = <F as FnOnce<A>>::Output where Self: 'a