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fix: add flap and non empty array

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Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com>
This commit is contained in:
Dr. Carsten Leue
2023-09-26 22:32:53 +02:00
parent ebe94d71dc
commit 1cd167541d
10 changed files with 211 additions and 0 deletions
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9
either/either.go
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@@ -22,6 +22,7 @@ package either
import (
E "github.com/IBM/fp-go/errors"
F "github.com/IBM/fp-go/function"
FC "github.com/IBM/fp-go/internal/functor"
O "github.com/IBM/fp-go/option"
)
@@ -245,3 +246,11 @@ func MonadSequence3[E, T1, T2, T3, R any](e1 Either[E, T1], e2 Either[E, T2], e3
func Swap[E, A any](val Either[E, A]) Either[A, E] {
return MonadFold(val, Right[A, E], Left[E, A])
}
func MonadFlap[E, A, B any](fab Either[E, func(A) B], a A) Either[E, B] {
return FC.MonadFlap(MonadMap[E, func(A) B, B], fab, a)
}
func Flap[E, A, B any](a A) func(Either[E, func(A) B]) Either[E, B] {
return F.Bind2nd(MonadFlap[E, A, B], a)
}