ReflectionBasedObjectEquality.m

#import <objc/runtime.h>

- (BOOL) objectsAreEqual:(NSObject *)o1 objectTwo:(NSObject *)o2 {

    if([o1 class] != [o2 class]) return NO;

    NSUInteger        property_count;
    objc_property_t * property_list = class_copyPropertyList([o1 class], &property_count); // Must Free, later

    for (int i = 0; i <= property_count ; i++) { // Reverse order, to get Properties in order they were defined
        objc_property_t property = property_list[i];

        // For Eeach property we are loading its name
        const char * property_name = property_getName(property);

        NSString * propertyName = [NSString stringWithCString:property_name encoding:NSASCIIStringEncoding];

        if (propertyName) { // and if name is ok, we are getting value using KVC
            id value1 = [o1 valueForKey:propertyName];
            id value2 = [o2 valueForKey:propertyName];

            // TODO - Too lazy to figure out all equality cases
            if([o1 class] == [NSString class] &&
               ![(NSString *)o1 isEqualToString:(NSString *)o2])
            {
                return NO;
            }
            else if(o1 != o2)
            {
                return NO;
            }

        }
    }
    free(property_list);//Clean up

    return YES;
}