Reselect vs Ramda

React

In order to generate filters and aggregates for your data, the most used tool in Reac't world is reselect.

Here's an example:

const shopItemsSelector = state => state.shop.items

const subtotalSelector = createSelector(
  shopItemsSelector,
  items => items.reduce((acc, item) => acc + item.value, 0)
)

Act

As stated in our goals, Act is heavily dependant on Ramda. In my POV, there are too many bad implementations of Haskell's prelude in JavaScript, and reselect, althought not such a bad implementation, only repeats simple things to do with a proper Prelude (like Ramda) but with novel names. Here's Ramda version of the code above:

const shopItemsSelector = state => state.shop.items

const subtotalSelector = pipe(
  shopItemsSelector,
  reduce((acc, item) => acc + item.value, 0)
)

Even simpler, and with tools that will be useful for so much more!