Async Rust Is A Bad Language - eviltoast
  • sugar_in_your_tea@sh.itjust.works
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    1 year ago

    They’re very similar, but with very different ergonomics. Go channels are part of the language, so libraries use them frequently, whereas tokio is a separate library and not nearly as ubiquitous. So you’ll get stuff like this:

    c := make(chan bool)
    go func () {
        time.Sleep(time.Second*2)
        c <- true
    } ()
    
    select {
    case val := <-c:
    case _ := <-time.After(time.Second)
    }
    

    This lets you implement a simple timeout for a channel read. So the barrier to using them is really low, so they get used a ton.

    I haven’t looked at the implementation of tokio channels, so I don’t know if there’s something subtly different, but they do have the same high level functionality.