bool TryWrite(T)

Yes. select can do a lot of things. It's overloaded to be something like 5 different things. Here, let me show you:

    chanOne := make(chan int)
    chanTwo := make(chan int)
    ctx := context.Background()

    // Receive whichever is ready first. Blocking
    select {
    case v := <-chanOne:
    case v := <-chanTwo:
    }

    // Non-blocking read
    select {
    case v := <-chanOne:
    default:
    }

    // Timeout and cancellation
    select {
    case v := <-chanOne:
    case <-time.After(1 * time.Second):
    // timeout
    case <-ctx.Done():
    // cancel
    }

    // Write or read, whichever channel is ready first
    select {
    case chanOne <- 1:
    case v := <-chanTwo:
    }

Simply because you're either constructing a bunch of callback objects or you get some number N saying the Nth parameter had an event, and your code has to match N to the specific channel correctly.