FRP + React, why is it not happening?

[jhegedus42]

There is Redux for React, which, to my understanding is a first order FRP (there is no flatten/join :: Behaviour Behaviour c -> Behaviour c ).

I wonder however if higher order FRP would be useful with React ? If yes, how ? Any opinions ?

This is what I mean http://stackoverflow.com/questions/39665845/higher-order-frp-with-react-why-is-it-not-happening

[the-real-blackh]

There's a Javascript version of Sodium now, so there's another option.

[graforlock]

FRP and React is a constant struggle with the nature of React, from experience.

Actually, a good read to it:

http://staltz.com/some-problems-with-react-redux.html

edit: not to say it is not happening. Redux and Mobx already implement some higher order observable concepts, so in regards to what Andre Staltz was saying this January in this post - came to life partially, as they made up their minds and adopt observables thoroughly, just as Angular2 is doing now.

[Ziriax]

I added a tiny library on github to bridge Sodium and FRP, plus a demo.

Both are work in progress, and I really should add some easy to use controls like checkbox, button, etc...

Nevertheless, it's a start. I never really used Sodium before, so I'm not sure if this is the "right" approach.

[jhegedus42]

Well, if I can get Sodium to work with Scala.js, then I might put that into https://github.com/jhegedus42/irie , which runs on React.

Let's see... either monix or Sodium. I'd prefer Sodium, if I can get the memory leak issues ironed out (if there are any ... I cannot even tell). If I remember correctly Stephen said something about memory leak issues with Scala.js and Sodium.

@the-real-blackh , what do you think ?

I did some experiments : http://sodium.nz/t/sodium-seems-to-work-with-scala-js/439

Do you think Sodium will have memory leak issues with Scala.js ?

Preliminary tests seem to be OK, to me, not really sure though. On the first glance Sodium seems to work
fine with Scala.js - but I cannot really tell.

@the-real-blackh what do you think ?

Is it possible to make that Sodium-Scala code work with Scala.js ?

No big rush, but monix is overly complicated ( the alternative, which works well with Scala.js ) - IMHO.

Sodium might be better suited for learning how to use FRP for web pages / SPAs - since there is also a
decent book that actually teaches FRP - what switch is, etc ... - I don't think people will get very far without
that book - and there is no such book for monix.

Cheers,

Jozsef

[jhegedus42]

OK, 3 years after the original question, it seems like that React and Sodium together is maybe a good idea:

jhegedus42/irie/blob/ba128daf4c24e61b155ab2ca28b7164c17dae3e1/modules/client/src/main/scala/app/client/ui/components/mainPages/userHandling/userList/UserListComp.scala#L34-L34

If you try to write the following code without Sodium, then halfway you will feel like throwing up. That is a bad feeling. To me, it seems to look like that Sodium might be a medicine that could take away this bad feeling.

  object FRP {
    val sbutton = SodiumWidgets.SodiumButtom()

    val cell: Cell[String] =
      sbutton.sClickedSink.map(x => "bello").hold("hello")

    val label: SodiumWidgets.SodiumLabel =SodiumWidgets.SodiumLabel(cell)

    val vdom= <.div(
      sbutton.getVDOM(),
      <.br,
      label.comp()
    )

  }

and yes,

it works:

This needs to be taken seriously.

React without Sodium is a poison.

React is like Chlorine gas, https://en.wikipedia.org/wiki/Chlorine_gas_poisoning

it's bad for your health.

But if you add some Sodium to it, then you can put it onto some food and
it will make it more tasty.

I start to see some good signs.