I was using virtualdom key for two things, both of which I cannot do in 0.17.
1. Instructing virtual-dom whether or not to reset scrolling-state of an element. Try it out here: https://debois.github.io/elm-mdl/: Scroll to the bottom, then switch tab. Because virtual-dom is re-using the div containing the main contents, it does not reset scrolling state, and so when you switch tab, you retain scrolling state. In 0.16, I could specify different keys for the old and new tabs, which would make virtual-dom clear scrolling-state on change. I can't find a way to do this in 0.17. 2. Controlling CSS transitions in dynamically generated list of elements. See @Richard's post above. Here is an example from the elm-mdl demo. Proper behaviour: https://debois.github.io/elm-mdl/. On the "snackbar" tab, click the "Snackbar" button a few times, then click "Undo". 0.17 behaviour: https://debois.github.io/elm-mdl/broken-css.html. Try the same thing. Note boxes accidentally resizing. What happens is that virtualdom re-appropriates a div of width 0 for an element that wants to be width 200px; CSS transitions kick in. Cheers, Søren -- You received this message because you are subscribed to the Google Groups "Elm Discuss" group. To unsubscribe from this group and stop receiving emails from it, send an email to elm-discuss+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
