InPermutation

    /// <summary>Used to enforce type nesting</summary>
    public interface HList { }

    public class Empty : HList { }

    public class Stack<T, TChild> : HList where TChild : HList
    {
        public T Item { get; private set; }
        public TChild Child { get; private set; }

InPermutation

var aggregate_scores_by_lol = function(votes, lols, users){
  var vote_count = lols.reduce(function(p,lol,i,r){ return p[lol.id] = 0, p; }, {});
  var lol_dictionary = lols.reduce(function(p,lol,i,r){ return p[lol.id] = lol, p}, {});

  votes.forEach(function(vote){ vote_count[vote.lol_id]++; });

  var vote_count_keys = vote_count.map(function(el,ix){ return ix;});

  var sorted_lol_ids = vote_count_keys.sort(function(a, b){
    return vote_count[b] - vote_count[a];