Re: Sorting a two-dimensional NSMutableArray
Re: Sorting a two-dimensional NSMutableArray
- Subject: Re: Sorting a two-dimensional NSMutableArray
- From: Marco Scheurer <email@hidden>
- Date: Mon, 10 Jun 2002 11:35:06 +0200
On Monday, June 10, 2002, at 08:27 am, Ben O'Neill wrote:
How do I sort a two dimensional array in line, I have been trying with;
records = [records sortedArrayUsingSelector:@selector(compare:)];
where records (the Array is defined as )
records = [[NSMutableArray alloc] initWithContentsOfFile:recordsFile];
but it compiles it returns a warning:
assignment from incompatible pointer type
and when it runs and the above line is run it returns an error:
2002-06-10 16:25:57.624 DVDManager[1272] *** -[NSCFDictionary
caseInsensitiveCompare:]: selector not recognized
What am I missing?
It looks like:
1) records is declared as an NSArray.
2) So you should not use [NSMutableArray alloc] but [NSArray alloc].
3) You've got an array of dictionaries, not an array of arrays, check
your file contents.
4) You haven't implemented the method -compare: on NSDictionary (nor on
NSArray).
But I have to wonder: what does it mean to sort a two-dimensional array?
Marco Scheurer
Sen:te, Lausanne, Switzerland
http://www.sente.ch
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