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mirror of https://github.com/IBM/fp-go.git synced 2025-08-10 22:31:32 +02:00

fix: add optics and consistent copyright

Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com>
This commit is contained in:
Dr. Carsten Leue
2023-07-23 22:05:54 +02:00
parent 9e14cd1c00
commit 7476b70a23
377 changed files with 7987 additions and 4 deletions

61
constant/const.go Normal file
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// 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 constant
import (
F "github.com/IBM/fp-go/function"
M "github.com/IBM/fp-go/monoid"
S "github.com/IBM/fp-go/semigroup"
)
type Const[E, A any] struct {
Value E
}
func Make[E, A any](e E) Const[E, A] {
return Const[E, A]{Value: e}
}
func Unwrap[E, A any](c Const[E, A]) E {
return c.Value
}
func Of[E, A any](m M.Monoid[E]) func(A) Const[E, A] {
return func(a A) Const[E, A] {
return Make[E, A](m.Empty())
}
}
func MonadMap[E, A, B any](fa Const[E, A], f func(A) B) Const[E, B] {
return Make[E, B](fa.Value)
}
func MonadAp[E, A, B any](s S.Semigroup[E]) func(fab Const[E, func(A) B], fa Const[E, A]) Const[E, B] {
return func(fab Const[E, func(A) B], fa Const[E, A]) Const[E, B] {
return Make[E, B](s.Concat(fab.Value, fa.Value))
}
}
func Map[E, A, B any](f func(A) B) func(fa Const[E, A]) Const[E, B] {
return F.Bind2nd(MonadMap[E, A, B], f)
}
func Ap[E, A, B any](s S.Semigroup[E]) func(fa Const[E, A]) func(fab Const[E, func(A) B]) Const[E, B] {
monadap := MonadAp[E, A, B](s)
return func(fa Const[E, A]) func(fab Const[E, func(A) B]) Const[E, B] {
return F.Bind2nd(monadap, fa)
}
}

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constant/const_test.go Normal file
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// 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 constant
import (
"testing"
F "github.com/IBM/fp-go/function"
"github.com/IBM/fp-go/internal/utils"
S "github.com/IBM/fp-go/string"
"github.com/stretchr/testify/assert"
)
func TestMap(t *testing.T) {
fa := Make[string, int]("foo")
assert.Equal(t, fa, F.Pipe1(fa, Map[string, int](utils.Double)))
}
func TestOf(t *testing.T) {
assert.Equal(t, Make[string, int](""), Of[string, int](S.Monoid)(1))
}
func TestAp(t *testing.T) {
fab := Make[string, int]("bar")
assert.Equal(t, Make[string, int]("foobar"), Ap[string, int, int](S.Monoid)(fab)(Make[string, func(int) int]("foo")))
}