gistfile1.go

func BatchGeocode(ips []string) []*GeoIP {
	ch := make(chan *GeoIP, len(ips))
	responses := []*GeoIP{}

	for _, ip := range ips {
		go func(ip string) {
			geo, err := Geocode(ip)
			if err != nil {
				log.Fatal(err)
			}
			ch <- geo
		}(ip)
	}

	for {
		select {
		case r := <-ch:
			responses = append(responses, r)
			if len(responses) == len(ips) {
				return responses
			}
		}
	}
}