gist .5 https://medium.com/@francesc/two-ways-of-merging-n-channels-in-go-43c0b57cd1de

main.go

    var cases []reflect.SelectCase
    for _, c := range chans {
        cases = append(cases, reflect.SelectCase{
            Dir:  reflect.SelectRecv,
            Chan: reflect.ValueOf(c),
        })
    }