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39 lines
1.2 KiB
Go
39 lines
1.2 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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S "github.com/IBM/fp-go/semigroup"
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)
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func UnionSemigroup[N ~map[K]V, K comparable, V any](s S.Semigroup[V]) S.Semigroup[N] {
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return S.MakeSemigroup(func(first N, second N) N {
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return union[N, K, V](S.ToMagma(s), first, second)
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})
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}
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func UnionLastSemigroup[N ~map[K]V, K comparable, V any]() S.Semigroup[N] {
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return S.MakeSemigroup(func(first N, second N) N {
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return unionLast[N, K, V](first, second)
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})
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}
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func UnionFirstSemigroup[N ~map[K]V, K comparable, V any]() S.Semigroup[N] {
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return S.MakeSemigroup(func(first N, second N) N {
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return unionLast[N, K, V](second, first)
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})
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}
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