An Equality test thing that though I am deleting I think I should keep around incase something similar comes up in the future.

ABSearch.m

@implementation ABSearch
{}

- (BOOL)isEqualToSearch:(GBSearch *)search {
    if (self == search)
        return YES;
    
    static NSString *objTypeIndicator = @"T@";
    static NSString *timePropertyName = @"time";
    static NSString *locationPropertyName = @"location";
    
    unsigned int outCount, i;
    objc_property_t *properties = class_copyPropertyList([self class], &outCount);
    for (i = 0; i < outCount; i++) {
        NSString *attributes = [NSString stringWithUTF8String:property_getAttributes(properties[i])];
        NSString *type = [attributes substringToIndex:2];
        BOOL itsAnObject = [type isEqualToString:objTypeIndicator];
        NSString *key = [NSString stringWithUTF8String:property_getName(properties[i])];
        if ([key isEqualToString:timePropertyName]) continue;
        id myVal = [self valueForKey:key];
        id sVal = [search valueForKey:key];
        if ([key isEqualToString:locationPropertyName]) {
            CLLocation *loc1 = myVal;
            CLLocation *loc2 = sVal;
            if ([loc1 distanceFromLocation:loc2] == 0) {
                continue;
            } else {
                return NO;
            }
        }
        if (myVal == nil && sVal == nil) {
            continue;
        }
        if (itsAnObject) {
            if (![myVal isEqual:sVal])  {
                return NO;
            }
        } else {
            if (myVal != sVal) {
                return NO;
            }
        }
    }
    free(properties);
    
    return YES;
}

-(BOOL)isEqual:(id)other {
    
    if([super isEqual:other])
        return YES;
    
    if(!other || ![other isKindOfClass:[self class]])
        return NO;
    
    return [self isEqualToSearch:other];
}
@end