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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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30
either/record.go Normal file
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package either
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, E, A, B any](f func(A) Either[E, B]) func(GA) Either[E, GB] {
return RR.Traverse[GA](
Of[E, GB],
MonadMap[E, GB, func(B) GB],
MonadAp[E, B, GB],
f,
)
}
// TraverseRecord transforms a record of eithers into an either of a record
func TraverseRecord[K comparable, E, A, B any](f func(A) Either[E, B]) func(map[K]A) Either[E, map[K]B] {
return TraverseRecordG[map[K]A, map[K]B](f)
}
func SequenceRecordG[GA ~map[K]A, GOA ~map[K]Either[E, A], K comparable, E, A any](ma GOA) Either[E, GA] {
return TraverseRecordG[GOA, GA](F.Identity[Either[E, A]])(ma)
}
// SequenceRecord converts a homogeneous sequence of either into an either of sequence
func SequenceRecord[K comparable, E, A any](ma map[K]Either[E, A]) Either[E, map[K]A] {
return SequenceRecordG[map[K]A](ma)
}