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fix: add missing array traversal to either

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Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com>
This commit is contained in:
Dr. Carsten Leue
2023-07-28 22:50:52 +02:00
parent 4e1cb825e7
commit 94bcfde0d3
22 changed files with 91 additions and 19 deletions
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46
either/array.go Normal file
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@@ -0,0 +1,46 @@
// 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 either
import (
F "github.com/IBM/fp-go/function"
RA "github.com/IBM/fp-go/internal/array"
)
// TraverseArray transforms an array
func TraverseArrayG[GA ~[]A, GB ~[]B, E, A, B any](f func(A) Either[E, B]) func(GA) Either[E, GB] {
return RA.Traverse[GA](
Of[E, GB],
Map[E, GB, func(B) GB],
Ap[GB, E, B],
f,
)
}
// TraverseArray transforms an array
func TraverseArray[E, A, B any](f func(A) Either[E, B]) func([]A) Either[E, []B] {
return TraverseArrayG[[]A, []B](f)
}
func SequenceArrayG[GA ~[]A, GOA ~[]Either[E, A], E, A any](ma GOA) Either[E, GA] {
return TraverseArrayG[GOA, GA](F.Identity[Either[E, A]])(ma)
}
// SequenceArray converts a homogeneous sequence of either into an either of sequence
func SequenceArray[E, A any](ma []Either[E, A]) Either[E, []A] {
return SequenceArrayG[[]A](ma)
}

2
either/gen.go
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@@ -15,7 +15,7 @@
// Code generated by go generate; DO NOT EDIT.
// This file was generated by robots at
// 2023-07-28 15:42:24.2984201 +0200 CEST m=+0.008649601
// 2023-07-28 22:48:23.165015 +0200 CEST m=+0.038998801
package either