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lu4nm3/ex10_smart.scala

Created May 16, 2020 20:14
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ex10_smart.scala
scala> EmailAddress("[email protected]").map(_.copy(emailAddress = "@example.com"))
res0: scala.util.Either[String,Either[String,EmailAddress]] = Right(Left(Invalid email address))
scala> for {
| e1 <- EmailAddress("[email protected]")
| e2 <- e1.copy(emailAddress = "@example.com")
| } yield e2
res1: scala.util.Either[String,EmailAddress] = Left(Invalid email address)
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