mirror of
https://github.com/IBM/fp-go.git
synced 2025-08-10 22:31:32 +02:00
38 lines
1.3 KiB
Go
38 lines
1.3 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 generic
|
|
|
|
import (
|
|
ET "github.com/IBM/fp-go/either"
|
|
F "github.com/IBM/fp-go/function"
|
|
IF "github.com/IBM/fp-go/internal/file"
|
|
)
|
|
|
|
// WithResource constructs a function that creates a resource, then operates on it and then releases the resource
|
|
func WithResource[
|
|
GA ~func() ET.Either[E, A],
|
|
GR ~func() ET.Either[E, R],
|
|
GANY ~func() ET.Either[E, ANY],
|
|
E, R, A, ANY any](onCreate GR, onRelease func(R) GANY) func(func(R) GA) GA {
|
|
return IF.WithResource(
|
|
MonadChain[GR, GA, E, R, A],
|
|
MonadFold[GA, GA, E, A, ET.Either[E, A]],
|
|
MonadFold[GANY, GA, E, ANY, ET.Either[E, A]],
|
|
MonadMap[GANY, GA, E, ANY, A],
|
|
Left[GA, E, A],
|
|
)(F.Constant(onCreate), onRelease)
|
|
}
|