Re: Removing duplicates from NSMutableArray
Re: Removing duplicates from NSMutableArray
- Subject: Re: Removing duplicates from NSMutableArray
- From: "John C. Randolph" <email@hidden>
- Date: Mon, 2 Dec 2002 15:52:52 -0800
On Monday, December 2, 2002, at 03:43 PM, Jan Van Tol wrote:
On Monday, December 2, 2002, at 04:47 PM, Sherm Pendley wrote:
On Monday, December 2, 2002, at 05:05 PM, Jan Van Tol wrote:
What is the best way to filter out duplicate NSStrings from an
NSMutableArray?
Traditional Perl wisdom is that, whenever you find yourself using the
words "unique" or "duplicate," you should be thinking about a hash
instead of an array. In Objective-C terms, that would be an
NSDictionary instead of an NSArray. That is, when you're building the
list, instead of doing this:
Except that I need it to be sorted. I suppose I could add everything
to the dictionary, then get an array from that, then sort it.
You might also want to look into using a CFTree, then.
-jcr
John C. Randolph <email@hidden> (408) 974-8819
Sr. Cocoa Software Engineer,
Apple Worldwide Developer Relations
http://developer.apple.com/cocoa/index.html
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