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fp-go/iooption/generic/sequence.go
Dr. Carsten Leue 1713de0c3e fix: introduce stateless iterator
Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com>
2023-07-24 16:43:07 +02:00

63 lines
2.6 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 (
"github.com/IBM/fp-go/internal/apply"
O "github.com/IBM/fp-go/option"
T "github.com/IBM/fp-go/tuple"
)
// SequenceT converts n inputs of higher kinded types into a higher kinded types of n strongly typed values, represented as a tuple
func SequenceT1[GA ~func() O.Option[A], GTA ~func() O.Option[T.Tuple1[A]], A any](a GA) GTA {
return apply.SequenceT1(
Map[GA, GTA, A, T.Tuple1[A]],
a,
)
}
func SequenceT2[GA ~func() O.Option[A], GB ~func() O.Option[B], GTAB ~func() O.Option[T.Tuple2[A, B]], A, B any](a GA, b GB) GTAB {
return apply.SequenceT2(
Map[GA, func() O.Option[func(B) T.Tuple2[A, B]], A, func(B) T.Tuple2[A, B]],
Ap[GB, GTAB, func() O.Option[func(B) T.Tuple2[A, B]], B, T.Tuple2[A, B]],
a, b,
)
}
func SequenceT3[GA ~func() O.Option[A], GB ~func() O.Option[B], GC ~func() O.Option[C], GTABC ~func() O.Option[T.Tuple3[A, B, C]], A, B, C any](a GA, b GB, c GC) GTABC {
return apply.SequenceT3(
Map[GA, func() O.Option[func(B) func(C) T.Tuple3[A, B, C]], A, func(B) func(C) T.Tuple3[A, B, C]],
Ap[GB, func() O.Option[func(C) T.Tuple3[A, B, C]], func() O.Option[func(B) func(C) T.Tuple3[A, B, C]], B, func(C) T.Tuple3[A, B, C]],
Ap[GC, GTABC, func() O.Option[func(C) T.Tuple3[A, B, C]], C, T.Tuple3[A, B, C]],
a, b, c,
)
}
func SequenceT4[GA ~func() O.Option[A], GB ~func() O.Option[B], GC ~func() O.Option[C], GD ~func() O.Option[D], GTABCD ~func() O.Option[T.Tuple4[A, B, C, D]], A, B, C, D any](a GA, b GB, c GC, d GD) GTABCD {
return apply.SequenceT4(
Map[GA, func() O.Option[func(B) func(C) func(D) T.Tuple4[A, B, C, D]], A, func(B) func(C) func(D) T.Tuple4[A, B, C, D]],
Ap[GB, func() O.Option[func(C) func(D) T.Tuple4[A, B, C, D]], func() O.Option[func(B) func(C) func(D) T.Tuple4[A, B, C, D]], B, func(C) func(D) T.Tuple4[A, B, C, D]],
Ap[GC, func() O.Option[func(D) T.Tuple4[A, B, C, D]], func() O.Option[func(C) func(D) T.Tuple4[A, B, C, D]], C, func(D) T.Tuple4[A, B, C, D]],
Ap[GD, GTABCD, func() O.Option[func(D) T.Tuple4[A, B, C, D]], D, T.Tuple4[A, B, C, D]],
a, b, c, d,
)
}