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47 lines
1.4 KiB
Go
47 lines
1.4 KiB
Go
// Copyright (c) 2023 IBM Corp.
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// All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package option
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import (
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F "github.com/IBM/fp-go/function"
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RA "github.com/IBM/fp-go/internal/array"
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)
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// TraverseArray transforms an array
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func TraverseArrayG[GA ~[]A, GB ~[]B, A, B any](f func(A) Option[B]) func(GA) Option[GB] {
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return RA.Traverse[GA](
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Of[GB],
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Map[GB, func(B) GB],
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Ap[GB, B],
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f,
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)
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}
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// TraverseArray transforms an array
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func TraverseArray[A, B any](f func(A) Option[B]) func([]A) Option[[]B] {
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return TraverseArrayG[[]A, []B](f)
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}
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func SequenceArrayG[GA ~[]A, GOA ~[]Option[A], A any](ma GOA) Option[GA] {
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return TraverseArrayG[GOA, GA](F.Identity[Option[A]])(ma)
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}
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// SequenceArray converts a homogeneous sequence of either into an either of sequence
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func SequenceArray[A any](ma []Option[A]) Option[[]A] {
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return SequenceArrayG[[]A](ma)
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}
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