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fp-go/monoid/apply.go
Dr. Carsten Leue 865d9fe064 fix: add missing alt methods and semigroup
Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com>
2023-09-12 22:10:33 +02:00

35 lines
930 B
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 monoid
import (
S "github.com/IBM/fp-go/semigroup"
)
func ApplicativeMonoid[A, HKTA, HKTFA any](
fof func(A) HKTA,
fmap func(HKTA, func(A) func(A) A) HKTFA,
fap func(HKTFA, HKTA) HKTA,
m Monoid[A],
) Monoid[HKTA] {
return MakeMonoid(
S.ApplySemigroup[A](fmap, fap, m).Concat,
fof(m.Empty()),
)
}