maputil.go

package maputil

type StringMap struct {
        mapping map[string]string
        order []string
}

func (sm *StringMap) Set(key, value string) {
      sm.mapping[key] = value 
      sm.order = append(order, key)
}

func (sm *StringMap) Range(f func(string)) {
        for _, s := range sm.order {
                f(sm.mapping[s])
        }
}