Trait AsyncFnMut

pub trait AsyncFnMut<Args>: AsyncFnOnce<Args>
where
    Args: Tuple,
{
    type CallRefFuture<'a>: Future<Output = Self::Output>
       where Self: 'a;

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

🔬This is a nightly-only experimental API. (async_closure #62290)

An async-aware version of the FnMut trait.

All async fn and functions returning futures implement this trait.

Required Associated Types

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

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

Future returned by AsyncFnMut::async_call_mut and AsyncFn::async_call.

Required Methods

extern "rust-call" fn async_call_mut( &mut self, args: Args, ) -> Self::CallRefFuture<'_>

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

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

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.

Implementors

impl<A, F> AsyncFnMut<A> for &F

where A: Tuple, F: AsyncFn<A> + ?Sized,

type CallRefFuture<'a> = <F as AsyncFnMut<A>>::CallRefFuture<'a> where &F: 'a

impl<A, F> AsyncFnMut<A> for &mut F

where A: Tuple, F: AsyncFnMut<A> + ?Sized,

type CallRefFuture<'a> = <F as AsyncFnMut<A>>::CallRefFuture<'a> where &mut F: 'a

impl<Args, F, A> AsyncFnMut<Args> for Box<F, A>

where Args: Tuple, F: AsyncFnMut<Args> + ?Sized, A: Allocator,

type CallRefFuture<'a> = <F as AsyncFnMut<Args>>::CallRefFuture<'a> where Box<F, A>: 'a