On Jan 19, 2010, at 12:52 PM, Dave DeLong wrote:

> None of them.
> 
> According to the memory management rules, you're only responsible for objects 
> you create via an "alloc", "new", or "copy" method, which none of these are.  
> All of these objects are autoreleased.

Unless PerformXMLXPathQuery returns an object that you own. But if it does 
that, it should have been given a better name that has the word alloc, new or 
copy in it.

-- 
Dave Carrigan
[email protected]
Seattle, WA, USA

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