224: Re-export IO traits from futures r=stjepang a=stjepang
Sorry for the big PR!
Instead of providing our own traits `async_std::io::{Read, Write, Seek, BufRead}`, we now re-export `futures::io::{AsyncRead, AsyncWrite, AsyncSeek, AsyncRead}`. While re-exporting we rename them to strip away the "Async" prefix.
The documentation will display the contents of the original traits from the `futures` crate together with our own extension methods. There's a note in the docs saying the extenion methods become available only when `async_std::prelude::*` is imported.
Our extension traits are re-exported into the prelude, but are marked with `#[doc(hidden)]` so they're completely invisible to users.
The benefit of this is that people can now implement traits from `async_std::io` for their types and stay compatible with `futures`. This will also simplify some trait bounds in our APIs - for example, things like `where Self: futures_io::AsyncRead`.
At the same time, I cleaned up some trait bounds in our stream interfaces, but haven't otherwise fiddled with them much.
I intend to follow up with another PR doing the same change for `Stream` so that we re-export the stream trait from `futures`.
Co-authored-by: Stjepan Glavina <stjepang@gmail.com>
* Add future::poll_fn
* Replace all uses of poll_fn with the new one
* Remove some uses of futures
* Simplify ReadDir and DirEntry
* Remove some use of futures from File
* Use futures subcrates
* Fix imports in docs
* Remove futures-util dependency
* Remove futures-executor-preview
* Refactor
* Require more features in the futures-preview crate
* Implement an async version of ToSocketAddrs
* fix documentation issue
* genius hack: pretending to be `impl Future`
* replace `std::net::ToSocketAddrs` with `async-std::net::ToSocketAddrs`
* Move unit tests into the tests directory
* Stylistic changes
* Remove re-exports in async_std::net
* fix broken link
* some mirror changes
* remove unnecessary format
* migrate: `std::net::ToSocketAddrs` -> `async_std::net::ToSocketAddrs`
* fix typo(tutorial)
* remove unnecessary type bound
* lifetime for future
Absolutely awesome work here! Just reading through the book absorbing all of the awesomeness and noticed this little bit. Let me know if you would like for me to update the corrections in any way.
