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Written by Display Name on 2024-12-09 at 13:58

That mpsc::Receiver does not have a function peek(&self) -> bool is very annoying. I think it is easy to build a wrapper that provides peek(&mut self) -> bool but I do not want to introduce a mutable self in this code section just to peek() when nothing needs to be mutated regardless of the result.

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Written by chrysn on 2024-12-09 at 14:31

@Teufelchen I think you can use interior mutability to manage the peeked item (setting which is otherwise a mutation), and put that Option in a (Ref)Cell.

The receiver is already not Sync, so you don't need fancy synchronization.

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