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Version: 1.0.18


An Exit[E, A] value describes how fibers end life. It has two possible values:

  • Exit.Success contain a success value of type A.
  • Exit.Failure contains a failure Cause of type E.

We can call run on our effect to determine the Success or Failure of our fiber:

import zio._
import zio.console._
for {
successExit <- ZIO.succeed(1).run
_ <- successExit match {
case Exit.Success(value) =>
putStrLn(s"exited with success value: ${value}")
case Exit.Failure(cause) =>
putStrLn(s"exited with failure state: $cause")
} yield ()