[kman42]

I am having trouble determining if two dictionaries from two different objects contain the same information. Here is the method:

-(void)checkForNewRefs query *)queryToCheck {
query *newQueryResults;
newQueryResults=[self generateQuery:[queryToCheck valueForKey:@"queryTitle"]];
if ([[newQueryResults valueForKey:@"referenceDictionary"] allKeys]==[[queryToCheck valueForKey:@"referenceDictionary"] allKeys]) {
NSLog(@"No new refs");
}
else {
NSLog(@"New refs");
NSLog([newQueryResults valueForKey:@"referenceDictionary"]);
}
}

This is the NSLog output:

2002-03-29 10:08:17.308 CocoaMed[383] New refs
2002-03-29 10:08:17.309 CocoaMed[383] *** -[NSCFDictionary length]: selector not recognized
2002-03-29 10:08:17.322 CocoaMed[383] *** -[NSCFDictionary length]: selector not recognized


I have used the valueForKey calls to retrieve the dictionaries in other methods and they work fine so I don't think that is the problem, but the '[NSCFDictionary length]: selector not recognized' output makes me think otherwise. Any ideas? Am I going about this the wrong way? The dictionaries contain the same keys but the objects are pointers to different objects (but the same info). The method is designed to repeat a search on the internet and then determine if anything has changed (i.e. if newQueryResults has updated compared to queryToCheck).

thanks,
kman

[Angus_D]

You are basically doing two things wrong here.

== tests for pointer equality. This is unlikely what you want to do here. Instead use [anObj isEqual:anotherObj]
NSLog()'s first argument should be a string. I think you'll probably want to do something like
<BLOCKQUOTE><font size="1"face="Geneva, Verdana, Arial">code:</font><HR><pre><font size=1 face=courier>NSLog(<font color = orange>@"new: %@"</font>, [[newQueryResults valueForKey:<font color = orange>@"referenceDictionary"</font>] description]);</font>[/code]

HTH.

[kman42]

Thanks. I have to throw out props to people on this forum. Everyone has been extremely helpful to my learning experience.

thanks,
kman