追加不适用于定义为结构类型切片的命名类型

Question

Need a fresh look because something I do, I get wrong here. I tried to append status to a slice, it wouldn't work

I tried using dereferencing as well

type ServerStatuses []ServerStatus
statuses := new(ServerStatuses)

status := &ServerStatus{
    time:      time,
    available: available,
    url:       url,
}

statuses = append(statuses, *status)

append will not work in such case in spite of statuses is a slice.

Answer 1

It's nothing to do with the named type. It's because statuses is a *ServerStatuses, which is a pointer to a slice, not a slice. You can only append to slices, not to pointers. Remember that new returns a pointer to the given type. If you replace new(ServerStatuses) with ServerStatuses{}, it works: https://play.golang.org/p/OYdTbLoVifD