mirror of
https://github.com/IBM/fp-go.git
synced 2025-07-17 01:32:23 +02:00
41 lines
1.1 KiB
Go
41 lines
1.1 KiB
Go
// 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 (
|
|
L "github.com/IBM/fp-go/lazy"
|
|
M "github.com/IBM/fp-go/monoid"
|
|
)
|
|
|
|
// AlternativeMonoid is the alternative [Monoid] for an [Either]
|
|
func AlternativeMonoid[E, A any](m M.Monoid[A]) M.Monoid[Either[E, A]] {
|
|
return M.AlternativeMonoid(
|
|
Of[E, A],
|
|
MonadMap[E, A, func(A) A],
|
|
MonadAp[A, E, A],
|
|
MonadAlt[E, A],
|
|
m,
|
|
)
|
|
}
|
|
|
|
// AltMonoid is the alternative [Monoid] for an [Either]
|
|
func AltMonoid[E, A any](zero L.Lazy[Either[E, A]]) M.Monoid[Either[E, A]] {
|
|
return M.AltMonoid(
|
|
zero,
|
|
MonadAlt[E, A],
|
|
)
|
|
}
|