Function async_std::future::poll_fn

pub async fn poll_fn<F, T>(f: F) -> T where
    F: FnMut(&mut Context) -> Poll<T>, 

Creates a new future wrapping around a function returning Poll.

Polling the returned future delegates to the wrapped function.

Examples

use async_std::future;
use async_std::task::{Context, Poll};

fn poll_greeting(_: &mut Context<'_>) -> Poll<String> {
    Poll::Ready("hello world".to_string())
}

assert_eq!(future::poll_fn(poll_greeting).await, "hello world");