trait PartialInvariantFunctor[F[_]] extends InvariantFunctor[F]
Given a type constructor F
, a partial function A => Validated[B]
and a total function B => A
, turns an F[A]
into an F[B]
.
A partial invariant functor is an invariant functor whose covariant
transformation function is total (ie, A => Valid[B]
).
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abstract
def
xmapPartial[A, B](fa: F[A], f: (A) ⇒ Validated[B], g: (B) ⇒ A): F[B]
Transforms an
F[A]
value into anF[B]
value given a partial function fromA
toB
, and a total function fromB
toA
.Transforms an
F[A]
value into anF[B]
value given a partial function fromA
toB
, and a total function fromB
toA
.This is useful to refine the type
A
into a possibly smaller typeB
.- See also
Concrete Value Members
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final
def
!=(arg0: Any): Boolean
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==(arg0: Any): Boolean
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def
asInstanceOf[T0]: T0
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def
eq(arg0: AnyRef): Boolean
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equals(arg0: Any): Boolean
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def
getClass(): Class[_]
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def
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def
wait(arg0: Long, arg1: Int): Unit
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wait(arg0: Long): Unit
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final
def
wait(): Unit
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def
xmap[A, B](fa: F[A], f: (A) ⇒ B, g: (B) ⇒ A): F[B]
Transforms an
F[A]
value into anF[B]
value given a pair of functions fromA
toB
and fromB
toA
.Transforms an
F[A]
value into anF[B]
value given a pair of functions fromA
toB
and fromB
toA
.- Definition Classes
- PartialInvariantFunctor → InvariantFunctor
- See also
-
final
def
xmapWithCodec[A, B](fa: F[A], codec: Codec[A, B]): F[B]
Transforms an
F[A]
value into anF[B]
value given aCodec[A, B]
.Transforms an
F[A]
value into anF[B]
value given aCodec[A, B]
.This is useful to refine the type
A
into a possibly smaller typeB
.- See also