Metaprogramming with Properties

#pragma mark - NSCoding
- (id)initWithCoder:(NSCoder *)decoder
{
    self = [super init];
    if (!self)
    {
        return self;
    }

    unsigned int count;
    objc_property_t *properties = class_copyPropertyList([self class], &count);
    for (NSUInteger i = 0; i < count; i++)
    {
        objc_property_t property = properties[i];
        NSString *key = [NSString stringWithUTF8String:property_getName(property)];
        [self setValue:[decoder decodeObjectForKey:key] forKey:key];
    }
    free(properties);

    return self;
}

- (void)encodeWithCoder:(NSCoder *)coder
{
    unsigned int count;
    objc_property_t *properties = class_copyPropertyList([self class], &count);
    for (NSUInteger i = 0; i < count; i++)
    {
        objc_property_t property = properties[i];
        NSString *key = [NSString stringWithUTF8String:property_getName(property)];
        [coder encodeObject:[self valueForKey:key] forKey:key];
    }

    free(properties);
}