A helper function that can add (sum) strings and numbers AS NUMBERS, ie. "1"+2 will return 3 and not "12". Requires _

sumAny.js

  var sumAny = function() {
    var sum = 0;
    _.each(arguments, function(arg) {
      var _num;
      _num  = parseInt(arg);
      if (!isNaN(_num)) sum += _num;
    });
    return sum;
  }