Some playground stuff

Author: djspiewak

build.sbt

@@ -191,7 +191,7 @@ lazy val coreJVM = core.jvm.settings(mimaSettings)
 lazy val coreJS = core.js
 
 // intentionally not in the aggregation
-lazy val scratch = project.dependsOn(coreJVM)
+lazy val scratch = project.dependsOn(coreJVM).settings(commonSettings)
 
 enablePlugins(GitVersioning)
 

scratch/src/main/scala/shims/playground.scala

@@ -0,0 +1,43 @@
+import shims._
+
+object ScalazExamples {
+  import scalaz.Functor
+  import scalaz.syntax.functor._
+
+  def liftedToString[F[_]: Functor](fa: F[Int]): F[String] = fa.map(_.toString)
+
+  liftedToString(Box(42))
+
+  {
+    import cats.instances.list._
+
+    liftedToString(List(1, 2, 3))
+  }
+}
+
+final case class Box[A](a: A)
+
+object Box {
+  import cats.Functor
+
+  implicit val functor: Functor[Box] = new Functor[Box] {
+    def map[A, B](ba: Box[A])(f: A => B) = Box(f(ba.a))
+  }
+}
+
+object CatsExamples {
+  import scalaz.{\/, \/-}
+
+  def extractFromEither[A, B](e: Either[A, B]): Option[B] = e.toOption
+
+  val example: Boolean \/ Int = \/-(42)
+  extractFromEither(example.asCats)
+}
+
+object MixedExamples {
+  import cats.Eval
+  import scalaz.std.list._
+  import cats.syntax.traverse._
+
+  List(1, 2, 3, 4).traverse(i => Eval.later(i * 2))
+}