text: var _ = require('underscore');
  exports.type = "array";
  exports.transform = function(values){
    var total = (typeof _.first(values) === 'number') ? 0 : "";
    if (!values.forEach){
      return;
    }
    values.forEach(function(value){
      if (typeof value === 'number' || typeof value === 'string'){
        total += value;
      }
    });
    return total;
  };
  