This is admittedly better, note, tough, that I was trying to do it in the mindset of the other languages included (just having one explicit list and filtering out instead of in); however, as it was stated before, it's never good to try to write code in the idiomatic style of other languages if the end result is something not idiomatic at all, it's like trying to play the bach chaconne for violin in a tuba or <put better analogy here> : it can be done but it's just forcing it.