Question

Printing description of self->data:
{
    root =     {
        participant =         (
                        {
                age =                 {
                    text = "\n        27";
                };
                class =                 {
                    text = "\n        M 25-29";
                };
                gender =                 {
                    text = "\n        M";
                };
            },
                        {
                age =                 {
                    text = "\n        27";
                };
                class =                 {
                    text = "\n        M 25-29";
                };
                gender =                 {
                    text = "\n        M";
                };
            },
                        {
                age =                 {
                    text = "\n        29";
                };
                class =                 {
                    text = "\n        M 25-29";
                };
                gender =                 {
                    text = "\n        M";
                };
            },

There’s an example of my data. The real record is 913 items in length consisting of male and female participants. How do I whittle a dict down to just the Males or Females?

I’ve tried valueForKeyPath:@"root.participant.gender.text==M" but that’s not it. I specifically just want to know the class for Males and Females respectively in case there’s a better way.

Answer 1

Nothing was working so I ended up going with this

NSArray *participants = [self.data valueForKeyPath:@"root.participant"];
NSMutableArray *men = [[NSMutableArray alloc] init];
NSMutableArray *women = [[NSMutableArray alloc] init];

for(NSDictionary *p in participants) {
    NSString *t = [XMLReader cleanString:[p valueForKeyPath:@"chiptime.text"]];
    NSNumber *m = [NSNumber numberWithFloat:[self timeToMinutes:t]];
    if([[XMLReader cleanString:[p valueForKeyPath:@"gender.text"]] isEqualToString:@"M"]) {
        [men addObject:m];
    } else {
        [women addObject:m];
    }
}

The XMLReader cleanString just takes out the \n\s* garbage.