Question

I am trying to initialize an NSMutableArray with the values of an NSArray but when I NSLog the newly created NSMutableArray all i get is (null), (null)… etc

I have no idea why this happening its super frustrating.

I set up myMutableArray in the header and @synthesize etc..

then in parserdidend delegate this is what I try to do.

- (void)parserDidEndDocument:(NSXMLParser *)parser
{
    if (dataSetToParse == @"ggf"){        
        //Filter results (ISTOY = T)
        NSPredicate *predicate = [NSPredicate predicateWithFormat:@"%K like %@",@"ISTOY",@"T"];
        NSArray *filteredArray = [parsedDataArrayOfDictionaries filteredArrayUsingPredicate:predicate];

       NSLog(@"%@", filteredArray); //This prints correct details

        [myMutableArray setArray:filteredArray];

         NSLog(@"%@", myMutableArray); //This prints (null), (null)... etc

    //Use myMutableArray later...
    }

That pretty much sums it up.

Answer 1

I guess myMutableArray is nil?

Also, you can do this:

myMutableArray = [ [ filteredArray mutableCopy ] autorelease ] ;

(don’t add the autorelease if you’re under ARC)