Correct the cleanup implementation by using a regular for loop instead of range. Explain the final cleanup logic.

If you have a cleanup function that uses a range loop to iterate over elements, and you need to rewrite it using a regular for loop, it might look like this:

func cleanup(items []Item) {
    for i := 0; i < len(items); i++ {
        // Perform cleanup for items[i]
        items[i].Clear()
    }
}

Here, we explicitly iterate over indices from 0 to the length of the slice items. This is useful if you need to control the index or modify elements by index.

Final cleanup logic usually involves iterating over all elements of the collection sequentially and performing the necessary operation to release resources, reset state, or delete data for each. This approach guarantees that all elements are processed, and no "garbage" or lingering resources remain.