code: function(items) {
  
  		var result = true,
  			i = 0,
  			count = items.length;
  
  		for (; i < count; i++) {
  
  			if (this.SIMPLE_TYPES.indexOf(Firestorm.getType(items[i])) == -1) {
  				result = false;
  				break;
  			}
  
  		}
  
  		return result;
  
  	}
docs: Whether to inline or slice() an array in constructor
  @param {Array} items
  @returns {boolean}