abstract class Transform[F[_]] extends AnyRef
Typeclass that describes type constructors that support the exmap
operation.
- Self Type
- Transform[F]
- Source
- Transform.scala
- Alphabetic
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- Transform
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- Any
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- Public
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Instance Constructors
- new Transform()
Abstract Value Members
Concrete Value Members
- final def !=(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
- final def ##: Int
- Definition Classes
- AnyRef → Any
- final def ==(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
- def as[A, B](fa: F[A])(implicit as: Transformer[A, B]): F[B]
Transforms supplied
F[A]
to anF[B]
using implicitly available evidence that such a transformation is possible.Transforms supplied
F[A]
to anF[B]
using implicitly available evidence that such a transformation is possible.Typical transformations include converting:
- an
F[L]
for someL <: HList
to/from anF[CC]
for some case classCC
, where the types in the case class are aligned with the types inL
- an
F[C]
for someC <: Coproduct
to/from anF[SC]
for some sealed classSC
, where the component types in the coproduct are the leaf subtypes of the sealed class.
- an
- final def asInstanceOf[T0]: T0
- Definition Classes
- Any
- def clone(): AnyRef
- Attributes
- protected[lang]
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.CloneNotSupportedException]) @native()
- final def eq(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
- def equals(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef → Any
- def finalize(): Unit
- Attributes
- protected[lang]
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.Throwable])
- final def getClass(): Class[_ <: AnyRef]
- Definition Classes
- AnyRef → Any
- Annotations
- @native()
- def hashCode(): Int
- Definition Classes
- AnyRef → Any
- Annotations
- @native()
- final def isInstanceOf[T0]: Boolean
- Definition Classes
- Any
- def narrow[A, B](fa: F[A], f: (A) => Attempt[B], g: (B) => A): F[B]
Transforms supplied
F[A]
to anF[B]
using two functions,A => Attempt[B]
andB => A
.Transforms supplied
F[A]
to anF[B]
using two functions,A => Attempt[B]
andB => A
.The supplied functions form an injection from
B
toA
. Hence, converting aF[A]
to aF[B]
converts from a larger to a smaller type. Hence, the namenarrow
. - final def ne(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
- final def notify(): Unit
- Definition Classes
- AnyRef
- Annotations
- @native()
- final def notifyAll(): Unit
- Definition Classes
- AnyRef
- Annotations
- @native()
- final def synchronized[T0](arg0: => T0): T0
- Definition Classes
- AnyRef
- def toString(): String
- Definition Classes
- AnyRef → Any
- final def wait(): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException])
- final def wait(arg0: Long, arg1: Int): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException])
- final def wait(arg0: Long): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException]) @native()
- def widen[A, B](fa: F[A], f: (A) => B, g: (B) => Attempt[A]): F[B]
Transforms supplied
F[A]
to anF[B]
using two functions,A => B
andB => Attempt[A]
.Transforms supplied
F[A]
to anF[B]
using two functions,A => B
andB => Attempt[A]
.The supplied functions form an injection from
A
toB
. Hence, converting aF[A]
to aF[B]
converts from a smaller to a larger type. Hence, the namewiden
. - def widenOpt[A, B](fa: F[A], f: (A) => B, g: (B) => Option[A]): F[B]
Transforms supplied
F[A]
to anF[B]
using two functions,A => B
andB => Option[A]
.Transforms supplied
F[A]
to anF[B]
using two functions,A => B
andB => Option[A]
.Particularly useful when combined with case class apply/unapply. E.g.,
widenOpt(fa, Foo.apply, Foo.unapply)
. - def xmap[A, B](fa: F[A], f: (A) => B, g: (B) => A): F[B]
Transforms supplied
F[A]
to anF[B]
using the isomorphism described by two functions,A => B
andB => A
.
Deprecated Value Members
- def pxmap[A, B](fa: F[A], f: (A) => B, g: (B) => Option[A]): F[B]
Transforms supplied
F[A]
to anF[B]
using two functions,A => B
andB => Option[A]
.Transforms supplied
F[A]
to anF[B]
using two functions,A => B
andB => Option[A]
.Particularly useful when combined with case class apply/unapply. E.g.,
pxmap(fa, Foo.apply, Foo.unapply)
.- Annotations
- @deprecated
- Deprecated
(Since version 1.7.0) Use widenOpt instead