pub fn alternate<M>(
options: impl IntoIterator<Item = Node<M>>,
current: usize,
) -> Node<M>Expand description
One of options at a time: the one at current, or the last one if it’s past the end. It’s as
big as the biggest option, so it doesn’t change size when current does. The host fades from
one to the other. Keep the options the same from one
view to the next, so the host can tell which one is coming in.