An xml schema pattern to help distinguish between a null and an empty array 一种帮助区别零数组和空数组的xml schema模式
Web services programming tips and tricks : array gotcha - null array vs . empty array Web服务编程技巧与窍门:数组局限性- -零数组与空数组
Until standards bodies recognize and map this wrapped array pattern appropriately , this solution is something you should apply only if you really must distinguish a null array from an empty array 只有在标准组织适当地认可和映射这个包装的数组模式之后,您才能应用这一解决方法(如果您确实需要区别零数组和空数组的话) 。