given_Transform_Encoder

Transforms supplied F[A] to an F[B] using two functions, A => Attempt[B] and B => A.

The supplied functions form an injection from B to A. Hence, converting a F[A] to a F[B] converts from a larger to a smaller type. Hence, the name narrow.

Transforms supplied F[A] to an F[B] using two functions, A => B and B => Option[A].

Particularly useful when combined with case class apply/unapply. E.g., widenOpt(fa, Foo.apply, Foo.unapply).

Transforms supplied F[A] to an F[B] using the isomorphism described by two functions, A => B and B => A.

Curried version of xmap.

Transforms supplied F[A] to an F[B] using two functions, A => B and B => Attempt[A].

The supplied functions form an injection from A to B. Hence, converting a F[A] to a F[B] converts from a smaller to a larger type. Hence, the name widen.