ir quitar del mapa
m := map[string]string{"key1": "val1", "key2": "val2"}
delete(m, "key1")
vaya a agregar al mapa
m := make(map[string]int)
m["numberOne"] = 1
m["numberTwo"] = 2
ir a buscar desde el mapa
var id string
var ok bool
if x, found := res["strID"]; found {
if id, ok = x.(string); !ok {
//do whatever you want to handle errors - this means this wasn't a string
}
} else {
//handle error - the map didn't contain this key
}