public static DnsResult Merge(this DnsResult a, DnsResult b)
{
return(a == null ?
b == null ? DnsResult.Success : b :
new DnsResult
{
ErrorMessages =
a.ErrorMessages == null ? b.ErrorMessages :
b.ErrorMessages == null ? a.ErrorMessages :
a.ErrorMessages.Concat(b.ErrorMessages)
});
}
public static DnsResult Lift(this MaybeNotNull <DnsResult> maybe, DnsResult nullResult = null)
{
return(maybe.Kind == MaybeKind.Error ? DnsResult.FromException(maybe.Exception) : (maybe.ValueOrNull() ?? nullResult ?? DnsResult.Failed("Unknown error has occurred")));
}