Function1FlatMapOps

Alias for f composeF g.

Alias for f andThenF g.

Alias for a => f(a).flatMap(g) or (Kleisli(f) andThen Kleisli(g)).run

Example:

scala> import scala.util._
scala> import cats.implicits._

scala> val f: List[String] => Option[String] = _.headOption
scala> val g: String => Option[Int] = str => Try(str.toInt).toOption
scala> (f >=> g)(List("42"))
res0: Option[Int] = Some(42)
scala> (f andThenF g)(List("abc"))
res1: Option[Int] = None
scala> (f andThenF g)(List())
res2: Option[Int] = None

Alias for c => g(c).flatMap(f) or (Kleisli(f) compose Kleisli(g)).run

Example:

scala> import scala.util._
scala> import cats.implicits._

scala> val f: String => Option[Int] = str => Try(str.toInt).toOption
scala> val g: List[String] => Option[String] = _.headOption
scala> (f composeF g)(List("42"))
res0: Option[Int] = Some(42)
scala> (f composeF g)(List("abc"))
res1: Option[Int] = None
scala> (f composeF g)(List())
res2: Option[Int] = None