Expand description
Returns a Future instead of blocking the current thread.
Use async in front of fn, closure, or a block to turn the marked code into a Future.
As such the code will not be run immediately, but will only be evaluated when the returned
future is .awaited.
We have written an async book detailing async/await and trade-offs compared to using threads.
§Editions
async is a keyword from the 2018 edition onwards.
It is available for use in stable Rust from version 1.39 onwards.