Address of a temporary in Go?

Question

What\'s the cleanest way to handle a case such as this:

func a() string {
    /* doesn\'t matter */
}

b *string = &a()

This generates the

Answer 1

At the time of writing this, none of the answers really explain the rationale for why this is the case.

Consider the following:

func main() {
    m := map[int]int{}
    val := 1
    m[0] = val
    v := &m[0] // won't compile, but let's assume it does 
    delete(m, 0)
    fmt.Println(v)
}

If this code snippet actually compiled, what would v point to!? It's a dangling pointer since the underlying object has been deleted.

Given this, it seems like a reasonable restriction to disallow addressing temporaries