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fix: some internal refactorings

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Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com>
This commit is contained in:
Dr. Carsten Leue
2024-02-06 21:35:33 +01:00
parent 358573cc20
commit 59381c1e50
12 changed files with 96 additions and 43 deletions
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18
option/option.go
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@@ -18,6 +18,7 @@ package option
import (
F "github.com/IBM/fp-go/function"
C "github.com/IBM/fp-go/internal/chain"
FC "github.com/IBM/fp-go/internal/functor"
)
@@ -95,7 +96,7 @@ func MonadChain[A, B any](fa Option[A], f func(A) Option[B]) Option[B] {
}
func Chain[A, B any](f func(A) Option[B]) func(Option[A]) Option[B] {
return F.Bind2nd(MonadChain[A, B], f)
return Fold(None[B], f)
}
func MonadChainTo[A, B any](ma Option[A], mb Option[B]) Option[B] {
@@ -107,13 +108,20 @@ func ChainTo[A, B any](mb Option[B]) func(Option[A]) Option[B] {
}
func MonadChainFirst[A, B any](ma Option[A], f func(A) Option[B]) Option[A] {
return MonadChain(ma, func(a A) Option[A] {
return MonadMap(f(a), F.Constant1[B](a))
})
return C.MonadChainFirst(
MonadChain[A, A],
MonadMap[B, A],
ma,
f,
)
}
func ChainFirst[A, B any](f func(A) Option[B]) func(Option[A]) Option[A] {
return F.Bind2nd(MonadChainFirst[A, B], f)
return C.ChainFirst(
Chain[A, A],
Map[B, A],
f,
)
}
func Flatten[A any](mma Option[Option[A]]) Option[A] {