package internal import "strings" func parseDNSToCheck(data string) []string { out := make([]string, 0, strings.Count(data, ",")+1) for _, dns := range strings.Split(data, ",") { out = append(out, strings.TrimSpace(dns)) } return out } func Contains[T comparable](haystack []T, needle T) bool { for _, v := range haystack { if v == needle { return true } } return false }