Need help for Gold Challenge

Swift Programming (3rd Edition) 24. Memory Management and ARC
1

Currently, I am setting the argument to be an optional in the store(_ asset:) method but it not deallocating all of the assets. Any help would be appreciated.

    func store(_ asset: Asset?) {
        asset?.container = self
        asset?.changeHandler = { [weak self] (change) in
            print("\(String(describing: asset)) has changed value by \(change). New total value: \(String(describing: self?.totalValue))")
        }
        
        assets.append(asset!)
    }
2

I figured it out!

    func store(_ asset: Asset) {
        asset.container = self
        asset.changeHandler = { [ weak asset, weak self] (change) in
            print("\(String(describing: asset)) has changed value by \(change). New total value: \(String(describing: self?.totalValue))")
        }
        
        assets.append(asset)
    }