maps is a library using Go generics that offers a standard interface for manipulating different kinds of maps.

Using the same interface, you can create and use a standard Go map, a map that is safe for concurrency and/or a map that lets you order the keys in the map.

A Set class is included for quickly determining membership in a group.

package main
import . "github.com/goradd/maps"
import "fmt"
type myMap = Map[string,int] // the equal sign here is critical!
type myStdMap = StdMap[string, int]
func main() {
  m := new(Map[string, int])
  m.Copy(myStdMap{"b":2, "c":3})
  m.Set("a",1)
  sum := 0
  for v := range m.All() {
    sum += v
  }
  fmt.Print(sum)
}

By simply changing myMap to a SafeMap, you can make the map safe for concurrent use. Or, you can change myMap to a SliceMap, or a SafeSliceMap to also be able to iterate the map in the order it was created, similar to a PHP map.