override prependK/appendK for Tuple2K

typelevel · Oct 26, 2021 · 3c3fd1c · 3c3fd1c
1 parent 6af39c9
commit 3c3fd1c
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/core/src/main/scala/cats/data/Tuple2K.scala b/core/src/main/scala/cats/data/Tuple2K.scala
@@ -340,6 +340,12 @@ sealed private[data] trait Tuple2KAlternative[F[_], G[_]]
     with Tuple2KMonoidK[F, G] {
   def F: Alternative[F]
   def G: Alternative[G]
+
+  override def prependK[A](a: A, fa: Tuple2K[F, G, A]): Tuple2K[F, G, A] =
+    Tuple2K(F.prependK(a, fa.first), G.prependK(a, fa.second))
+
+  override def appendK[A](fa: Tuple2K[F, G, A], a: A): Tuple2K[F, G, A] =
+    Tuple2K(F.appendK(fa.first, a), G.appendK(fa.second, a))
 }
 
 sealed private[data] trait Tuple2KMonad[F[_], G[_]]