Learning Haskell/Python makes you a worse C# programmer(lukeplant.me.uk)

    string.Join("\n",
        from elem in myList
        where elem.Description != ""
        select elem.Description);

   "\n".join(foo.description() for foo in mylist
                         if foo.description() != "")

  string.Join("\n", mylist.Select(x=>x.Description()).Where(x=>x != "").ToArray());

  string.Join("\n", mylist.Select(x=>x.Description()).Where(x=>x != ""));

  join "\n", map { $_->{description} } grep { $_->{description} ne "" } @mylist;

  var descriptions = new ArrayList(mylist.Length);
  foreach (var foo in myList)
  {
    if (foo.Description == "") { continue; }
    descriptions.Add(foo.Description);
  }
  return String.Join("\n", descriptions);