Is there a plan to add a a function on `Effect` like `leftIfNull` for `Either`? Right now I do: ```e...

# arrow

[alightgoesout]

Is there a plan to add a a function on Effect like leftIfNull for Either?
Right now I do:

effect {
    ensureNotNull(someEffect.bind()) { SomeError("…") }
}

which seems verbose

[simon.vergauwen]

Good morning Romain.
Currently, there are no such plans, because we want to keep the API of Arrow slim.

[simon.vergauwen]

For the same reasons we've not added traverse etc for Effect yet since one can simply do.

effect {
  values.map { it.bind() }
}

Keep in mind that with context receivers you'll be able to do this.

[simon.vergauwen]

context(EffectScope<SomeError>)
suspend fun myCode(): Int =
  ensureNotNull(someEffect.bind()) { SomeError("…") }

[alightgoesout]

Thanks Simon! One more reason to wait for context receivers then.

[simon.vergauwen]

My pleasure Romain! We're also always eager to receive feedback on community used operators though, so if something is popular enough then we can definitely add it into Arrow