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dwattttt • today at 10:55 AM • 2 replies • view on HN

I was contemplating what it would look like to provide this with a macro in Rust, and of course someone has already done it. It's syntactic sugar for the destructor/RAII approach.

https://docs.rs/defer-rs/latest/defer_rs/

Replies

mojuba • today at 12:30 PM

I don't know Rust but, can this `defer` evaluate after the `return` statement is evaluated like in Swift? Because in Swift you can do this:

    func atomic_get_and_inc() -> Int {
        sem.wait()
        defer {
            value += 1
            sem.signal()
        }
        return value
    }
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