对旧的"Future< Item = X，Error = Y>"类型使用异步/等待 [英] Using async/await with old `Future<Item = X, Error = Y>` types

问题描述

我的箱子里有个函数，可以返回旧样式的期货.

I have a function in a crate that returns old style futures.

想象一下:

pub fn old_function() -> impl Future<Item = X, Error = Y>
...

我想在新的代码库中使用此板条箱，在这里我不想过多地混合东西.

I want to use this crate in a new codebase where I don't want to mix things too much.

如何在调用此old_function时保持新实现的清洁并使用async/await?

How can I keep the new implementation clean and use async/await when calling this old_function ?

推荐答案

答案很简单.如果有人遇到类似问题，我在这里写.它实际上是async/await入门的一部分:)

The answer was very easy. I write here in case somebody has a similar problem. It is actually part of the async/await primer :)

您需要启用兼容功能

[dependencies]
futures = { version = "0.3.1", features = ["compat"] }

随后可以执行以下操作:

And later it is possible to do:

let x = old_function().compat().await;

这篇关于对旧的"Future< Item = X，Error = Y>"类型使用异步/等待的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！