Zibaldone ScalaCatshierarchy Foldable.scala cats/src/main/scala/hierarchy/Foldable.scala package com.zibaldone.cats package hierarchy import cats.Eval trait Foldable[F[_]]: def foldLeft[A, B](fa: F[A], b: B)(f: (B, A) => B): B def foldRight[A, B](fa: F[A], b: Eval[B])(f: (A, Eval[B]) => Eval[B]): Eval[B]