modifyState

[jerbaroo]

setX /\ x <- useState

A modify state function would be useful from time to time, where x is an object with a few fields.

modifyState :: (a -> a) -> Effect Unit

[jerbaroo]

Suggested pattern:

• use useState for each field..
• then combine those into an object if that is needed

e.g.

      setCountry /\ country <- useState userRemote.country
      setCert /\ cert <- useState userRemote.cert
      setName /\ name <- useState userRemote.name
      let userLocal =
            (\country' cert' name' ->
              {country: country', cert: cert', name: name'})
            <$> country <*> cert <*> name