import (
"fmt"
"maps"
)
var d1 = map[int]string{1: "one"}
var d2 = map[int]string{2: "two", 3: "three"}
var dAll = map[int]string{}
maps.Insert(dAll, maps.All(d1))
maps.Insert(dAll, maps.All(d2))
//dAll is map[1:one 2:two 3:three]
fmt.Println("dAll is", dAll)