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fix: implement FilterChain

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Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com>
This commit is contained in:
Dr. Carsten Leue
2023-08-10 11:46:30 +02:00
parent cd53cb7036
commit c0028918ae
14 changed files with 311 additions and 17 deletions
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11
array/generic/array.go
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@ -118,6 +118,17 @@ func MonadFilterMap[GA ~[]A, GB ~[]B, A, B any](fa GA, f func(a A) O.Option[B])
return filterMap[GA, GB](fa, f)
}
func FilterChain[GA ~[]A, GB ~[]B, A, B any](f func(a A) O.Option[GB]) func(GA) GB {
return F.Flow2(
FilterMap[GA, []GB](f),
Flatten[[]GB],
)
}
func Flatten[GAA ~[]GA, GA ~[]A, A any](mma GAA) GA {
return MonadChain(mma, F.Identity[GA])
}
func FilterMap[GA ~[]A, GB ~[]B, A, B any](f func(a A) O.Option[B]) func(GA) GB {
return F.Bind2nd(MonadFilterMap[GA, GB, A, B], f)
}