The best practice is not to pass an array with null elements between Web service clients and servers.
最佳的实例不是将含有空元素的数组传递到Web服务的客户端及服务器上。
Weakly-typed collection objects, arrays containing null elements, and certain native data types all pose special problems for interoperability. Specifically
弱类型的集合对象、包含空元素的数组和特定的本地数据类型都给互操作性带来一定的问题，特别是
This may be in the form of Null values or other blank value conditions (for examples, Spaces) for one or multiple data elements of the entity.
对于实体的一个或多个数据元素，这可能以null值或空白值(例如空格)的形式出现。
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