Go lang是否可以创建也可以用作切片的结构？

Is it possible to have a struct in go that can also be accessed as a slice? So, for example, I'd want something like this:

type Item struct {
    Name string
}

type ItemList struct {
    PackDate time.Time
    []Item
}

And then I could access an Item in the ItemList as a slice.

myItemList[0].Name  

Or access the members of ItemList in the normal struct way.

myItemList.PackDate

If this is not possible, are there any recommended patterns for handling a sort of slice with metadata like this in go?

The recommended thing to do is to simply access the slice as a struct field:

type Item struct {
    Name string
}

type ItemList struct {
    PackDate time.Time
    Items    []Item
}

Accessing the values:

myItemList.Items[0].Name
myItemList.PackDate

Iterating over the slice:

for _, item := range myItemList.Items {
    // do something with item.Name
}

For example,

package main

import (
    "fmt"
    "time"
)

type Item struct {
    Name string
}

type ItemList struct {
    PackDate time.Time
    Items    []Item
}

func main() {
    list := ItemList{
        PackDate: time.Now(),
        Items:    []Item{{Name: "John"}, {Name: "Jane"}},
    }
    fmt.Println(list)
    fmt.Println(list.PackDate)
    fmt.Println(list.Items[1].Name)
}

Output:

{2009-11-10 23:00:00 +0000 UTC [{John} {Jane}]}
2009-11-10 23:00:00 +0000 UTC
Jane