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是否有NSXML Node s nodesForXPath:error: guarantee a specific ordering?
原标题:Does NSXMLNode s nodesForXPath:error: guarantee a specific ordering?

我通过打电话<代码>-nodesForXPath:error:,从XML文件中提取节点。 现在我想知道,这是否是,是否按照文件上从上到下(对我来说至关重要)的顺序将 no子归还。

我的XML研究的是这样的东西,而i检索了<条码>b与XPath query的标签:

<a>
    <b>
    ...    
    </b>
    <b>
    ...    
    </b>
<a>

不幸的是,<条码>b标签没有明确对应。

最佳回答

http://developer.apple.com/library/mac/#documentation/Cocoa/Reference/Foundation/Classes/NSXMLNode_Class/Reference/Reference/Reference.html” rel=“nofollow” 如果命令得到维持,我肯定会说,因为XML文件是固有的。 而且,没有定论结果的方法通常会说明这一事实;对于NSXMLNode,没有这样做。

尽管如此,确定的唯一办法是对你的数据进行一些测试。

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