arrow-core-data / arrow.core / combineAll
fun <A> Option<A>.combineAll(MA: Monoid<A>): A fun <E, A> Validated<E, A>.combineAll(MA: Monoid<A>): A
fun <A>
Option
<A>.combineAll(MA:
Monoid
<A>): A
fun <E, A>
Validated
<E, A>.combineAll(MA:
Do you like Arrow?