#Reactive

reactive is a reactive programming library for Moonbit. It is built with both web and terminal cli applications in mind.

At the core of the library is a type called Signal. Any changes/updates to the signal can be observed by subscribers. Once subscribed, the observers are notified whenever a signal is updated or modified. Observers can then initiate changes based on these signal updates. A signal can have many subscribers.

Example:

test "signal_update" {
  let values = []
  let s = new(0)
  s.subscribe_permanent(fn(v) { values.push(v) })
  assert_eq!(s.val(), 0)
  s.update(5) // This will notify subscribers with the new value.
  assert_eq!(s.val(), 5)
  assert_eq!(values, [0, 5])
  s.update(10) // This will notify subscribers with the new value.
  assert_eq!(s.val(), 10)
  assert_eq!(values, [0, 5, 10])
}

#reactive vs react

For web apps, reactive offers a fine-grained selection mechanisms to update UI views. This is in contrast to other JavaScript library like React where the whole virtual DOM is iterated on to find DOM updates/diffs. The fine-grained updates by reactive ensures that only dom node that needs updating are accessed and updated.

#How to use

moon add bikallem/reactive/core

#API Documentation

https://mooncakes.io/docs/bikallem/reactive

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