hi is there a `foreach` equivalent for `Either` in arrow kotlinlang #arrow

hi - is there a `foreach` equivalent for `Either` ...

Peter

05/27/2020, 3:30 PM

hi - is there a

foreach

equivalent for

Either

in arrow?

pakoito

05/27/2020, 4:07 PM

yes, it's

traverse

. Apply one effect to each element of a collection.

👍 1

pakoito

05/27/2020, 4:08 PM

It collects to something like an

IO

or an `Eval`that you'll need to exeute later

pakoito

05/27/2020, 4:08 PM

oh wait

pakoito

05/27/2020, 4:08 PM

for Either

pakoito

05/27/2020, 4:08 PM

yeah, fold

pakoito

05/27/2020, 4:09 PM

Copy code

either.fold({
  IO { oneEffect() } 
}, { 
  IO { otherEffect() } 
})

4 Views