override prependK/appendK for ComposedAlternative

typelevel · Oct 25, 2021 · 65aa007 · 65aa007
1 parent 6234c26
commit 65aa007
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/core/src/main/scala/cats/Composed.scala b/core/src/main/scala/cats/Composed.scala
@@ -62,6 +62,10 @@ private[cats] trait ComposedAlternative[F[_], G[_]]
     with ComposedApplicative[F, G]
     with ComposedMonoidK[F, G] { outer =>
   def F: Alternative[F]
+
+  override def prependK[A](a: A, fa: F[G[A]]): F[G[A]] = F.prependK(G.pure(a), fa)
+
+  override def appendK[A](fa: F[G[A]], a: A): F[G[A]] = F.appendK(fa, G.pure(a))
 }
 
 private[cats] trait ComposedFoldable[F[_], G[_]] extends Foldable[λ[α => F[G[α]]]] { outer =>