public-collect/books-futures-explained
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

passing tests on latest nightly

Browse Source
This commit is contained in:
Carl Fredrik Samson
2020-02-25 19:02:19 +01:00
parent 15936dc004
commit aacb3683a0
11 changed files with 14 additions and 157 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
src/3_generators_pin.md
View File

@@ -518,6 +518,12 @@ Thanks to [PR#45337][pr45337] you can actually run code like the one in our
example in Rust today using the `static` keyword on nightly. Try it for
yourself:
Beware that the API is changing rapidly. As I was writing this book
Generators had an API change adding support for a "resume" argument to
be passed into the generator closure.
Follow the progress on the [tracking issue #43122][issue43122] for [RFC#2033][rfc2033].
```rust
#![feature(generators, generator_trait)]
use std::ops::{Generator, GeneratorState};
@@ -541,16 +547,16 @@ pub fn main() {
let mut pinned1 = Box::pin(gen1);
let mut pinned2 = Box::pin(gen2);
if let GeneratorState::Yielded(n) = pinned1.as_mut().resume() {
if let GeneratorState::Yielded(n) = pinned1.as_mut().resume(()) {
println!("Gen1 got value {}", n);
}
if let GeneratorState::Yielded(n) = pinned2.as_mut().resume() {
if let GeneratorState::Yielded(n) = pinned2.as_mut().resume(()) {
println!("Gen2 got value {}", n);
};
let _ = pinned1.as_mut().resume();
let _ = pinned2.as_mut().resume();
let _ = pinned1.as_mut().resume(());
let _ = pinned2.as_mut().resume(());
}
```
@@ -559,4 +565,5 @@ pub fn main() {
[rfc1823]: https://github.com/rust-lang/rfcs/pull/1823
[rfc1832]: https://github.com/rust-lang/rfcs/pull/1832
[optimizing-await]: https://tmandry.gitlab.io/blog/posts/optimizing-await-1/
[pr45337]: https://github.com/rust-lang/rust/pull/45337/files
[pr45337]: https://github.com/rust-lang/rust/pull/45337/files
[issue43122]: https://github.com/rust-lang/rust/issues/43122