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33 lines
1017 B
Go
33 lines
1017 B
Go
// Copyright (c) 2023 IBM Corp.
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// All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package lens
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import (
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F "github.com/IBM/fp-go/function"
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L "github.com/IBM/fp-go/optics/lens"
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LO "github.com/IBM/fp-go/optics/lens/optional"
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OPT "github.com/IBM/fp-go/optics/optional"
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)
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// Compose composes a lens with an optional
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func Compose[S, A, B any](ab L.Lens[A, B]) func(sa OPT.Optional[S, A]) OPT.Optional[S, B] {
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return F.Pipe2(
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ab,
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LO.LensAsOptional[A, B],
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OPT.Compose[S, A, B],
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)
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}
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