I'm trying to write an async function which takes a closure as an argument. The closure is to return a Future and to take a reference to a value which is local to the function to which it was passed. Here's my first attempt. async fn access<T, Fut, F>(data: &RwLock<String>, accessor: F) -> T where …

[image] vague: Another approach is more powerful: we have async_fn_in_trait now (in nightly Rust), which means you can just define your own async trait I've used the trick to write a bunch of macros: async_closure - Rust And the problem in this thread can be easily solved with it in nightly…

How to express that the Future returned by a closure lives only as long as its argument?

help

vague February 28, 2023, 4:13am 2

Solution for this post

And also see other posts:

Asynchronous wrapper function taking a reference
Lifetime bounds to use for Future that isn't supposed to outlive calling scope

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How to express that the Future returned by a closure lives only as long as its argument?

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