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initial checkin

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Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com>
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Dr. Carsten Leue
2023-07-07 22:31:06 +02:00
parent 71c47ca560
commit c07df5c771
128 changed files with 5827 additions and 2 deletions
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31
option/record.go Normal file
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package option
import (
F "github.com/ibm/fp-go/function"
RR "github.com/ibm/fp-go/internal/record"
)
// TraverseRecord transforms a record of options into an option of a record
func TraverseRecordG[GA ~map[K]A, GB ~map[K]B, K comparable, A, B any](f func(A) Option[B]) func(GA) Option[GB] {
return RR.Traverse[GA](
Of[GB],
MonadMap[GB, func(B) GB],
MonadAp[B, GB],
f,
)
}
// TraverseRecord transforms a record of options into an option of a record
func TraverseRecord[K comparable, A, B any](f func(A) Option[B]) func(map[K]A) Option[map[K]B] {
return TraverseRecordG[map[K]A, map[K]B](f)
}
func SequenceRecordG[GA ~map[K]A, GOA ~map[K]Option[A], K comparable, A any](ma GOA) Option[GA] {
return TraverseRecordG[GOA, GA](F.Identity[Option[A]])(ma)
}
// SequenceRecord converts a homogeneous sequence of either into an either of sequence
func SequenceRecord[K comparable, A any](ma map[K]Option[A]) Option[map[K]A] {
return SequenceRecordG[map[K]A](ma)
}