fix: introduce stateless iterator

Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com>

iooption/array.go

@@ -0,0 +1,30 @@
+// Copyright (c) 2023 IBM Corp.
+// All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package iooption
+
+import (
+	G "github.com/IBM/fp-go/iooption/generic"
+)
+
+// TraverseArray transforms an array
+func TraverseArray[A, B any](f func(A) IOOption[B]) func([]A) IOOption[[]B] {
+	return G.TraverseArray[IOOption[B], IOOption[[]B], []A](f)
+}
+
+// SequenceArray converts a homogeneous sequence of either into an either of sequence
+func SequenceArray[A any](ma []IOOption[A]) IOOption[[]A] {
+	return G.SequenceArray[IOOption[A], IOOption[[]A], []IOOption[A], []A, A](ma)
+}