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how I finally understood async/await in Rust (part 2)
(hegdenu.net)
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this post was submitted on 30 Jun 2023
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The hardest part (for me) is dealing with the type requirements for the handlers. 99% of the time a simple await is enough, but when it isn't, I feel like I need to go spelunking.
Especially dealing with those pinned structs for the state. I get why it's needed because it's on the stack somewhere but it sure makes it hard to work with without using pin_project or pin_project_lite.
Yeah I hope that will improve over time (maybe with the necessary ergonomic changes for async traits and higher kinded types). But I feel this is just a matter of time and will likely be much better after the next Rust edition