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Merge pull request #73 from U007D/patch-1

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Clarify async fn return type
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Florian Gilcher 2019-08-18 11:25:21 +02:00 committed by GitHub
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docs/src/concepts/futures.md
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@ -102,7 +102,7 @@ While the `Future` trait has existed in Rust for a while, it was inconvenient to
Amazingly little difference, right? All we did is label the function `async` and insert 2 special commands: `.await`.
This function sets up a deferred computation. When this function is called, it will produce a `Future<Output=Result<String, io::Error>>` instead of immediately returning the `Result`. (Or, more precisely, generate a type for you that implements `Future<Output=Result<String, io::Error>>`.)
This function sets up a deferred computation. When this function is called, it will produce a `Future<Output=Result<String, io::Error>>` instead of immediately returning a `Result<String, io::Error>`. (Or, more precisely, generate a type for you that implements `Future<Output=Result<String, io::Error>>`.)
## What does `.await` do?