Which dependency contains the `arrow.core.extensions` package? I am trying to do `Either.applicative...

# arrow

[EarthCitizen]

Which dependency contains the arrow.core.extensions package? I am trying to do Either.applicative(), in case I am wrong about where to find this

[simon.vergauwen]

What version are you on? The Functor hierarchy was deprecated in 0.12.x and removed in 0.13.x

[EarthCitizen]

I am on 0.13

[EarthCitizen]

Is there an example somewhere of how to do an applicative over a data class constructor that works in 0.13?

[EarthCitizen]

Or is that simply just by doing this?

either.eager {
    val a = foo.bind()
    val b = foo.bind()
    Foo(a, b)
}

[EarthCitizen]

I was thinking that there must be a way to chain these instead of doing them 1 by 1

[raulraja]

Hi @EarthCitizen, I believe what you did there with bind you can do with zip if you want to treat as independent applicative values. Something like

foo.zip(otherFoo) { a, b -> Foo(a, b) }

[EarthCitizen]

@raulraja Ah thanks! I will try that