Re: Best way to sort a dictionary by value?
Re: Best way to sort a dictionary by value?
- Subject: Re: Best way to sort a dictionary by value?
- From: Keith Pritchard <email@hidden>
- Date: Wed, 2 Oct 2002 01:41:40 +0100
On Tuesday, September 24, 2002, at 03:04 PM, Matt Neuburg wrote:
On Sun, 22 Sep 2002 20:46:45 +0100, Keith Pritchard
<email@hidden> said:
I have a dictionary of dictionaries
I'd like to sort the dictionary1 keys by the values in dictionary
2....
eg. I'd like to get an array of dictionary1 keys that when iterated
through would result in a table of dictionary2 values sorted by, say,
date
Before I do something silly like trying to loop through dict2 using a
standard sort algorithm, does cocoa give me anything to make it
easier?
I keep looking at keysSortedByValueUsingSelector but not exactly sure
how it would work
It would work great; keep looking at it. Since the selector is sent
*to*
the items of dictionary1 they will need to be of a class that can
respond
(or you can put a category on NSDictionary or NSMutableDictionary or
whatever the items are). Basically Cocoa simply lets you sort any way
you
like. Consider alternatively sortedArrayUsingSelector: and
sortedArrayUsingFunction:. m.
Scott,
sorry to ask, could you give me a quick example or bit more info on
what you meant by putting a category on NSDictionary?
My item of dictionary1 would indeed by a dictionary...
Thanks for your help,
Keith
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