code: function(o, f) {
    return Object.keys(o).map(function(key) {
      return f(o[key], key, o);
    });
  }
docs: map: function (o, callback) { _.forIn(o, function (value, key) { // echo('util.map', key); if (value instanceof CSG) { // echo('key', value instanceof CSG); return value = callback(value, key); } return value; }); return o; }, 
  Object map function, returns an array of the object mapped into an array.
  @param  {object} o Object to map
  @param  {function} f function to apply on each key
  @return {array}   an array of the mapped object.