Macro futures_macro_await::stream_yield
[−]
[src]
macro_rules! stream_yield { ($e:expr) => { ... }; }
Yield an item from an #[async_stream]
function.
Examples
ⓘThis example is not tested
#![feature(proc_macro, generators, pin)] extern crate futures; use futures::prelude::*; use futures::stream; use futures::executor::block_on; #[async_stream(item = u32)] fn one_five() -> Result<(), u32> { stream_yield!(1); stream_yield!(5); Ok(()) } assert_eq!(Ok(vec![1, 5]), block_on(one_five().pin().collect()));