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/post.scala

Created October 17, 2016 11:48
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post.scala
import cats.data.Xor._
sealed trait DivisionError
case object DivisionByZero extends DivisionError
case object SomeOtherPossibleError extends DivisionError
def divide(dividend: Double, divisor: Double): Xor[DivisionError, Double] = {
if (divisor == 0)
left(DivisionByZero)
else
right(dividend/divisor)
}
for {
div1 <- divide(1.0, 1.0)
div2 <- divide(1.0, 0.0)
div3 <- divide(3.0, 3.0)
} yield div1 |+| div2 |+| div3
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