Connecting two lists

[kraftwer1]

Does anybody know if it's possible to connect two lists (and maybe has a working example for it)?
My app:

<Container>
    <List>
        <Item id="1"></Item>
        <Item id="2"></Item>
    </List>
    <List>
        <Item id="3"></Item>
        <Item id="4"></Item>
    </List>
<Container>

Now I'd like to drag the first item of the first list to the second list.
That means, when I use setState(), I'll have to remove an item from the first list and add it to the second list (to the index to where the user has dropped it). Right now, I'm getting a lot of errors when I do that (encountered two children with the same key...).

Note: I'm not looking for debugging my app, I'm just asking if this is even possible.

[gaearon]

Definitely possible, see #227.
It has an example (slightly broken one, but I explain how to fix it in the issue).

[kraftwer1]

Thanks a lot, the example helped me to solve the issue.