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32 lines
966 B
Go
32 lines
966 B
Go
package option
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import (
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F "github.com/IBM/fp-go/function"
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RR "github.com/IBM/fp-go/internal/record"
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)
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// TraverseRecord transforms a record of options into an option of a record
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func TraverseRecordG[GA ~map[K]A, GB ~map[K]B, K comparable, A, B any](f func(A) Option[B]) func(GA) Option[GB] {
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return RR.Traverse[GA](
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Of[GB],
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Map[GB, func(B) GB],
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Ap[GB, B],
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f,
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)
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}
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// TraverseRecord transforms a record of options into an option of a record
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func TraverseRecord[K comparable, A, B any](f func(A) Option[B]) func(map[K]A) Option[map[K]B] {
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return TraverseRecordG[map[K]A, map[K]B](f)
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}
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func SequenceRecordG[GA ~map[K]A, GOA ~map[K]Option[A], K comparable, A any](ma GOA) Option[GA] {
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return TraverseRecordG[GOA, GA](F.Identity[Option[A]])(ma)
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}
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// SequenceRecord converts a homogeneous sequence of either into an either of sequence
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func SequenceRecord[K comparable, A any](ma map[K]Option[A]) Option[map[K]A] {
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return SequenceRecordG[map[K]A](ma)
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}
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