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64 lines
2.0 KiB
Go
64 lines
2.0 KiB
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 generic
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import (
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ET "github.com/IBM/fp-go/either"
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G "github.com/IBM/fp-go/internal/apply"
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)
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// MonadApFirst combines two effectful actions, keeping only the result of the first.
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func MonadApFirst[GA ~func() ET.Either[E, A], GB ~func() ET.Either[E, B], GBA ~func() ET.Either[E, func(B) A], E, A, B any](first GA, second GB) GA {
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return G.MonadApFirst(
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MonadAp[GA, GBA, GB],
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MonadMap[GA, GBA, E, A, func(B) A],
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first,
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second,
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)
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}
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// ApFirst combines two effectful actions, keeping only the result of the first.
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func ApFirst[GA ~func() ET.Either[E, A], GB ~func() ET.Either[E, B], GBA ~func() ET.Either[E, func(B) A], E, A, B any](second GB) func(GA) GA {
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return G.ApFirst(
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MonadAp[GA, GBA, GB],
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MonadMap[GA, GBA, E, A, func(B) A],
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second,
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)
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}
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// MonadApSecond combines two effectful actions, keeping only the result of the second.
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func MonadApSecond[GA ~func() ET.Either[E, A], GB ~func() ET.Either[E, B], GBB ~func() ET.Either[E, func(B) B], E, A, B any](first GA, second GB) GB {
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return G.MonadApSecond(
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MonadAp[GB, GBB, GB],
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MonadMap[GA, GBB, E, A, func(B) B],
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first,
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second,
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)
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}
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// ApSecond combines two effectful actions, keeping only the result of the second.
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func ApSecond[GA ~func() ET.Either[E, A], GB ~func() ET.Either[E, B], GBB ~func() ET.Either[E, func(B) B], E, A, B any](second GB) func(GA) GB {
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return G.ApSecond(
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MonadAp[GB, GBB, GB],
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MonadMap[GA, GBB, E, A, func(B) B],
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second,
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)
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}
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