Is the point about two reactions made here https://github.com/Day8/re-frame/issues/157#issuecomment-201028677 valid? I would think that (reaction <@U1BH0DC10>) is not usefully different from just val, correct?

@mccraigmccraig: https://github.com/bvaughn/react-virtualized this one?

@naomarik: no, i wrote my own...